<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/H__Ap__Frp_og_Venstre_g_r_for_DNA_innsamling_av_hele_befolkningen.html">H, Ap, Frp og Venstre går for DNA-innsamling av hele befolkningen</a></div>
- <div class="date">14th March 2018</div>
- <div class="body"><p>I går kom det nok et argument for å holde seg unna det norske
-helsevesenet. Da annonserte et stortingsflertall, bestående av Høyre,
-Arbeiderpartiet, Fremskrittspartiet og Venstre, at de går inn for å
-samle inn og lagre DNA-prøver fra hele befolkningen i Norge til evig
-tid. Endringen gjelder innsamlede blodprøver fra nyfødte i Norge.
-Det vil dermed ta litt tid før en har hele befolkningen, men det er
-dit vi havner gitt nok tid. I dag er det nesten hundre prosent
-oppslutning om undersøkelsen som gjøres like etter fødselen, på
-bakgrunn av blodprøven det er snakk om å lagre, for å oppdage endel
-medfødte sykdommer. Blodprøven lagres i dag i inntil seks år.
-<a href="https://www.stortinget.no/no/Saker-og-publikasjoner/Publikasjoner/Innstillinger/Stortinget/2017-2018/inns-201718-182l/?all=true">Stortingets
-flertallsinnstilling</a> er at tidsbegrensingen skal fjernes, og mener
-at tidsubegrenset lagring ikke vil påvirke oppslutningen om
-undersøkelsen.</p>
-
-<p>Datatilsynet har ikke akkurat applaudert forslaget:</p>
-
-<p><blockquote>
-
- <p>«Datatilsynet mener forslaget ikke i tilstrekkelig grad
- synliggjør hvilke etiske og personvernmessige utfordringer som må
- diskuteres før en etablerer en nasjonal biobank med blodprøver fra
- hele befolkningen.»</p>
-
-</blockquote></p>
-
-<p>Det er flere historier om hvordan innsamlet biologisk materiale har
-blitt brukt til andre formål enn de ble innsamlet til, og historien om
-<a href="https://www.aftenposten.no/norge/i/Ql0WR/Na-ma-Folkehelsa-slette-uskyldiges-DNA-info">folkehelseinstituttets
-lagring på vegne av politiet (Kripos) av innsamlet biologisk materiale
-og DNA-informasjon i strid med loven</a> viser at en ikke kan være
-trygg på at lover og intensjoner beskytter de som blir berørt mot
-misbruk av slik privat og personlig informasjon.</p>
-
-<p>Det er verdt å merke seg at det kan forskes på de innsamlede
-blodprøvene uten samtykke fra den det gjelder (eller foreldre når det
-gjelder barn), etter en lovendring for en stund tilbake, med mindre
-det er sendt inn skjema der en reserverer seg mot forskning uten
-samtykke. Skjemaet er tilgjengelig fra
-<a href="https://www.fhi.no/arkiv/publikasjoner/for-pasienter-skjema-for-reservasjo/">folkehelseinstituttets
-websider</a>, og jeg anbefaler, uavhengig av denne saken, varmt alle å
-sende inn skjemaet for å dokumentere hvor mange som ikke synes det er
-greit å fjerne krav om samtykke.</p>
-
-<p>I tillegg bør en kreve destruering av alt biologisk materiale som
-er samlet inn om en selv, for å redusere eventuelle negative
-konsekvenser i fremtiden når materialet kommer på avveie eller blir
-brukt uten samtykke, men det er så vidt jeg vet ikke noe system for
-dette i dag.</p>
-
-<p>Som vanlig, hvis du bruker Bitcoin og ønsker å vise din støtte til
-det jeg driver med, setter jeg pris på om du sender Bitcoin-donasjoner
-til min adresse
-<b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Software_created_using_taxpayers__money_should_be_Free_Software.html">Software created using taxpayers’ money should be Free Software</a></div>
+ <div class="date">30th August 2018</div>
+ <div class="body"><p>It might seem obvious that software created using tax money should
+be available for everyone to use and improve. Free Software
+Foundation Europe recentlystarted a campaign to help get more people
+to understand this, and I just signed the petition on
+<a href="https://publiccode.eu/">Public Money, Public Code</a> to help
+them. I hope you too will do the same.</p>
</div>
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern</a>, <a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett</a>.
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/First_rough_draft_Norwegian_and_Spanish_edition_of_the_book_Made_with_Creative_Commons.html">First rough draft Norwegian and Spanish edition of the book Made with Creative Commons</a></div>
- <div class="date">13th March 2018</div>
- <div class="body"><p>I am working on publishing yet another book related to Creative
-Commons. This time it is a book filled with interviews and histories
-from those around the globe making a living using Creative
-Commons.</p>
-
-<p>Yesterday, after many months of hard work by several volunteer
-translators, the first draft of a Norwegian Bokmål edition of the book
-<a href="https://madewith.cc">Made with Creative Commons from 2017</a>
-was complete. The Spanish translation is also complete, while the
-Dutch, Polish, German and Ukraine edition need a lot of work. Get in
-touch if you want to help make those happen, or would like to
-translate into your mother tongue.</p>
-
-<p>The whole book project started when
-<a href="http://gwolf.org/node/4102">Gunnar Wolf announced</a> that he
-was going to make a Spanish edition of the book. I noticed, and
-offered some input on how to make a book, based on my experience with
-translating the
-<a href="https://www.lulu.com/shop/lawrence-lessig/fri-kultur/paperback/product-22441576.html">Free
-Culture</a> and
-<a href="https://debian-handbook.info/get/#norwegian">The Debian
-Administrator's Handbook</a> books to Norwegian Bokmål. To make a
-long story short, we ended up working on a Bokmål edition, and now the
-first rough translation is complete, thanks to the hard work of
-Ole-Erik Yrvin, Ingrid Yrvin, Allan Nordhøy and myself. The first
-proof reading is almost done, and only the second and third proof
-reading remains. We will also need to translate the 14 figures and
-create a book cover. Once it is done we will publish the book on
-paper, as well as in PDF, ePub and possibly Mobi formats.</p>
-
-<p>The book itself originates as a manuscript on Google Docs, is
-downloaded as ODT from there and converted to Markdown using pandoc.
-The Markdown is modified by a script before is converted to DocBook
-using pandoc. The DocBook is modified again using a script before it
-is used to create a Gettext POT file for translators. The translated
-PO file is then combined with the earlier mentioned DocBook file to
-create a translated DocBook file, which finally is given to dblatex to
-create the final PDF. The end result is a set of editions of the
-manuscript, one English and one for each of the translations.</p>
-
-<p>The translation is conducted using
-<a href="https://hosted.weblate.org/projects/madewithcc/translation/">the
-Weblate web based translation system</a>. Please have a look there
-and get in touch if you would like to help out with proof
-reading. :)</p>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/A_bit_more_on_privacy_respecting_health_monitor___fitness_tracker.html">A bit more on privacy respecting health monitor / fitness tracker</a></div>
+ <div class="date">13th August 2018</div>
+ <div class="body"><p>A few days ago, I wondered if there are any privacy respecting
+health monitors and/or fitness trackers available for sale these days.
+I would like to buy one, but do not want to share my personal data
+with strangers, nor be forced to have a mobile phone to get data out
+of the unit. I've received some ideas, and would like to share them
+with you.
+
+One interesting data point was a pointer to a Free Software app for
+Android named
+<a href="https://github.com/Freeyourgadget/Gadgetbridge/">Gadgetbridge</a>.
+It provide cloudless collection and storing of data from a variety of
+trackers. Its
+<a href="https://github.com/Freeyourgadget/Gadgetbridge/#supported-devices">list
+of supported devices</a> is a good indicator for units where the
+protocol is fairly open, as it is obviously being handled by Free
+Software. Other units are reportedly encrypting the collected
+information with their own public key, making sure only the vendor
+cloud service is able to extract data from the unit. The people
+contacting me about Gadgetbirde said they were using
+<a href="https://us.amazfit.com/shop/bip?variant=336750">Amazfit
+Bip</a> and
+<a href="http://www.xiaomimi6phone.com/xiaomi-mi-band-3-features-release-date-rumors/">Xiaomi
+Band 3</a>.</p>
+
+<p>I also got a suggestion to look at some of the units from Garmin.
+I was told their GPS watches can be connected via USB and show up as a
+USB storage device with
+<a href="https://www.gpsbabel.org/htmldoc-development/fmt_garmin_fit.html">Garmin
+FIT files</a> containing the collected measurements. While
+proprietary, FIT files apparently can be read at least by
+<a href="https://www.gpsbabel.org">GPSBabel</a> and the
+<a href="https://apps.nextcloud.com/apps/gpxpod">GpxPod</a> Nextcloud
+app. It is unclear to me if they can read step count and heart rate
+data. The person I talked to was using a
+<a href="https://buy.garmin.com/en-US/US/p/564291">Garmin Forerunner
+935</a>, which is a fairly expensive unit. I doubt it is worth it for
+a unit where the vendor clearly is trying its best to move from open
+to closed systems. I still remember when Garmin dropped NMEA support
+in its GPSes.</p>
+
+<p>A final idea was to build ones own unit, perhaps by basing it on a
+wearable hardware platforms like
+<a href="https://learn.adafruit.com/flora-geo-watch">the Flora Geo
+Watch</a>. Sound like fun, but I had more money than time to spend on
+the topic, so I suspect it will have to wait for another time.</p>
+
+<p>While I was working on tracking down links, I came across an
+inspiring TED talk by Dave Debronkart about
+<a href="https://archive.org/details/DavedeBronkart_2010X">being a
+e-patient</a>, and discovered the web site
+<a href="https://participatorymedicine.org/epatients/">Participatory
+Medicine</a>. If you too want to track your own health and fitness
+without having information about your private life floating around on
+computers owned by others, I recommend checking it out.</p>
<p>As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/docbook">docbook</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Debian_used_in_the_subway_info_screens_in_Oslo__Norway.html">Debian used in the subway info screens in Oslo, Norway</a></div>
- <div class="date"> 2nd March 2018</div>
- <div class="body"><p>Today I was pleasantly surprised to discover my operating system of
-choice, Debian, was used in the info screens on the subway stations.
-While passing Nydalen subway station in Oslo, Norway, I discovered the
-info screen booting with some text scrolling. I was not quick enough
-with my camera to be able to record a video of the scrolling boot
-screen, but I did get a photo from when the boot got stuck with a
-corrupt file system:
-
-<p align="center"><a href="http://people.skolelinux.org/pere/blog/images/2018-03-02-ruter-debian-lenny.jpeg"><img align="center" width="40%" src="http://people.skolelinux.org/pere/blog/images/2018-03-02-ruter-debian-lenny.jpeg" alt="[photo of subway info screen]"></a></p>
-
-<p>While I am happy to see Debian used more places, some details of the
-content on the screen worries me.</p>
-
-<p>The image show the version booting is 'Debian GNU/Linux lenny/sid',
-indicating that this is based on code taken from Debian Unstable/Sid
-after Debian Etch (version 4) was released 2007-04-08 and before
-Debian Lenny (version 5) was released 2009-02-14. Since Lenny Debian
-has released version 6 (Squeeze) 2011-02-06, 7 (Wheezy) 2013-05-04, 8
-(Jessie) 2015-04-25 and 9 (Stretch) 2017-06-15, according to
-<a href="https://en.wikipedia.org/wiki/Debian_version_history">a Debian
-version history on Wikpedia</a>. This mean the system is running
-around 10 year old code, with no security fixes from the vendor for
-many years.</p>
-
-<p>This is not the first time I discover the Oslo subway company,
-Ruter, running outdated software. In 2012,
-<a href="http://people.skolelinux.org/pere/blog/Er_billettautomatene_til_kollektivtrafikken_i_Oslo_uten_sikkerhetsoppdateringer_.html">I
-discovered the ticket vending machines were running Windows 2000</a>,
-and this was
-<a href="http://people.skolelinux.org/pere/blog/Fortsatt_ingen_sikkerhetsoppdateringer_for_billettautomatene_til_kollektivtrafikken_i_Oslo_.html">still
-the case in 2016</a>. Given the response from the responsible people
-in 2016, I would assume the machines are still running unpatched
-Windows 2000. Thus, an unpatched Debian setup come as no surprise.</p>
-
-<p>The photo is made available under the license terms
-<a href="http://creativecommons.org/licenses/by/4.0/">Creative Commons
-4.0 Attribution International (CC BY 4.0)</a>.</p>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Privacy_respecting_health_monitor___fitness_tracker_.html">Privacy respecting health monitor / fitness tracker?</a></div>
+ <div class="date"> 7th August 2018</div>
+ <div class="body"><p>Dear lazyweb,</p>
+
+<p>I wonder, is there a fitness tracker / health monitor available for
+sale today that respect the users privacy? With this I mean a
+watch/bracelet capable of measuring pulse rate and other
+fitness/health related values (and by all means, also the correct time
+and location if possible), which is <strong>only</strong> provided for
+me to extract/read from the unit with computer without a radio beacon
+and Internet connection. In other words, it do not depend on a cell
+phone app, and do make the measurements available via other peoples
+computer (aka "the cloud"). The collected data should be available
+using only free software. I'm not interested in depending on some
+non-free software that will leave me high and dry some time in the
+future. I've been unable to find any such unit. I would like to buy
+it. The ones I have seen for sale here in Norway are proud to report
+that they share my health data with strangers (aka "cloud enabled").
+Is there an alternative? I'm not interested in giving money to people
+requiring me to accept "privacy terms" to allow myself to measure my
+own health.</p>
<p>As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/ruter">ruter</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/The_SysVinit_upstream_project_just_migrated_to_git.html">The SysVinit upstream project just migrated to git</a></div>
- <div class="date">18th February 2018</div>
- <div class="body"><p>Surprising as it might sound, there are still computers using the
-traditional Sys V init system, and there probably will be until
-systemd start working on Hurd and FreeBSD.
-<a href="https://savannah.nongnu.org/projects/sysvinit">The upstream
-project still exist</a>, though, and up until today, the upstream
-source was available from Savannah via subversion. I am happy to
-report that this just changed.</p>
-
-<p>The upstream source is now in Git, and consist of three
-repositories:</p>
-
-<ul>
-
-<li><a href="http://git.savannah.nongnu.org/cgit/sysvinit.git">sysvinit</a></li>
-<li><a href="http://git.savannah.nongnu.org/cgit/sysvinit/insserv.git">insserv</a></li>
-<li><a href="http://git.savannah.nongnu.org/cgit/sysvinit/startpar.git">startpar</a></li>
-
-</ul>
-
-<p>I do not really spend much time on the project these days, and I
-has mostly retired, but found it best to migrate the source to a good
-version control system to help those willing to move it forward.</p>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Sharing_images_with_friends_and_family_using_RSS_and_EXIF_XMP_metadata.html">Sharing images with friends and family using RSS and EXIF/XMP metadata</a></div>
+ <div class="date">31st July 2018</div>
+ <div class="body"><p>For a while now, I have looked for a sensible way to share images
+with my family using a self hosted solution, as it is unacceptable to
+place images from my personal life under the control of strangers
+working for data hoarders like Google or Dropbox. The last few days I
+have drafted an approach that might work out, and I would like to
+share it with you. I would like to publish images on a server under
+my control, and point some Internet connected display units using some
+free and open standard to the images I published. As my primary
+language is not limited to ASCII, I need to store metadata using
+UTF-8. Many years ago, I hoped to find a digital photo frame capable
+of reading a RSS feed with image references (aka using the
+<enclosure> RSS tag), but was unable to find a current supplier
+of such frames. In the end I gave up that approach.</p>
+
+<p>Some months ago, I discovered that
+<a href="https://www.jwz.org/xscreensaver/">XScreensaver</a> is able to
+read images from a RSS feed, and used it to set up a screen saver on
+my home info screen, showing images from the Daily images feed from
+NASA. This proved to work well. More recently I discovered that
+<a href="https://kodi.tv">Kodi</a> (both using
+<a href="https://www.openelec.tv/">OpenELEC</a> and
+<a href="https://libreelec.tv">LibreELEC</a>) provide the
+<a href="https://github.com/grinsted/script.screensaver.feedreader">Feedreader</a>
+screen saver capable of reading a RSS feed with images and news. For
+fun, I used it this summer to test Kodi on my parents TV by hooking up
+a Raspberry PI unit with LibreELEC, and wanted to provide them with a
+screen saver showing selected pictures from my selection.</p>
+
+<p>Armed with motivation and a test photo frame, I set out to generate
+a RSS feed for the Kodi instance. I adjusted my <a
+href="https://freedombox.org/">Freedombox</a> instance, created
+/var/www/html/privatepictures/, wrote a small Perl script to extract
+title and description metadata from the photo files and generate the
+RSS file. I ended up using Perl instead of python, as the
+libimage-exiftool-perl Debian package seemed to handle the EXIF/XMP
+tags I ended up using, while python3-exif did not. The relevant EXIF
+tags only support ASCII, so I had to find better alternatives. XMP
+seem to have the support I need.</p>
+
+<p>I am a bit unsure which EXIF/XMP tags to use, as I would like to
+use tags that can be easily added/updated using normal free software
+photo managing software. I ended up using the tags set using this
+exiftool command, as these tags can also be set using digiKam:</p>
+
+<blockquote><pre>
+exiftool -headline='The RSS image title' \
+ -description='The RSS image description.' \
+ -subject+=for-family photo.jpeg
+</pre></blockquote>
+
+<p>I initially tried the "-title" and "keyword" tags, but they were
+invisible in digiKam, so I changed to "-headline" and "-subject". I
+use the keyword/subject 'for-family' to flag that the photo should be
+shared with my family. Images with this keyword set are located and
+copied into my Freedombox for the RSS generating script to find.</p>
+
+<p>Are there better ways to do this? Get in touch if you have better
+suggestions.</p>
<p>As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/
bootsystem">bootsystem</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/
debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Using_VLC_to_stream_bittorrent_sources.html">Using VLC to stream bittorrent sources</a></div>
- <div class="date">14th February 2018</div>
- <div class="body"><p>A few days ago, a new major version of
-<a href="https://www.videolan.org/">VLC</a> was announced, and I
-decided to check out if it now supported streaming over
-<a href="http://bittorrent.org/">bittorrent</a> and
-<a href="https://webtorrent.io">webtorrent</a>. Bittorrent is one of
-the most efficient ways to distribute large files on the Internet, and
-Webtorrent is a variant of Bittorrent using
-<a href="https://webrtc.org">WebRTC</a> as its transport channel,
-allowing web pages to stream and share files using the same technique.
-The network protocols are similar but not identical, so a client
-supporting one of them can not talk to a client supporting the other.
-I was a bit surprised with what I discovered when I started to look.
-Looking at
-<a href="https://www.videolan.org/vlc/releases/3.0.0.html">the release
-notes</a> did not help answering this question, so I started searching
-the web. I found several news articles from 2013, most of them
-tracing the news from Torrentfreak
-("<a href=https://torrentfreak.com/open-source-giant-vlc-mulls-bittorrent-support-130211/">Open
-Source Giant VLC Mulls BitTorrent Streaming Support</a>"), about a
-initiative to pay someone to create a VLC patch for bittorrent
-support. To figure out what happend with this initiative, I headed
-over to the #videolan IRC channel and asked if there were some bug or
-feature request tickets tracking such feature. I got an answer from
-lead developer Jean-Babtiste Kempf, telling me that there was a patch
-but neither he nor anyone else knew where it was. So I searched a bit
-more, and came across an independent
-<a href="https://github.com/johang/vlc-bittorrent">VLC plugin to add
-bittorrent support</a>, created by Johan Gunnarsson in 2016/2017.
-Again according to Jean-Babtiste, this is not the patch he was talking
-about.</p>
-
-<p>Anyway, to test the plugin, I made a working Debian package from
-the git repository, with some modifications. After installing this
-package, I could stream videos from
-<a href="https://www.archive.org/">The Internet Archive</a> using VLC
-commands like this:</p>
-
-<p><blockquote><pre>
-vlc https://archive.org/download/LoveNest/LoveNest_archive.torrent
-</pre></blockquote></p>
-
-<p>The plugin is supposed to handle magnet links too, but since The
-Internet Archive do not have magnet links and I did not want to spend
-time tracking down another source, I have not tested it. It can take
-quite a while before the video start playing without any indication of
-what is going on from VLC. It took 10-20 seconds when I measured it.
-Some times the plugin seem unable to find the correct video file to
-play, and show the metadata XML file name in the VLC status line. I
-have no idea why.</p>
-
-<p>I have created a <a href="https://bugs.debian.org/890360">request for
-a new package in Debian (RFP)</a> and
-<a href="https://github.com/johang/vlc-bittorrent/issues/1">asked if
-the upstream author is willing to help make this happen</a>. Now we
-wait to see what come out of this. I do not want to maintain a
-package that is not maintained upstream, nor do I really have time to
-maintain more packages myself, so I might leave it at this. But I
-really hope someone step up to do the packaging, and hope upstream is
-still maintaining the source. If you want to help, please update the
-RFP request or the upstream issue.</p>
-
-<p>I have not found any traces of webtorrent support for VLC.</p>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Simple_streaming_the_Linux_desktop_to_Kodi_using_GStreamer_and_RTP.html">Simple streaming the Linux desktop to Kodi using GStreamer and RTP</a></div>
+ <div class="date">12th July 2018</div>
+ <div class="body"><p>Last night, I wrote
+<a href="http://people.skolelinux.org/pere/blog/Streaming_the_Linux_desktop_to_Kodi_using_VLC_and_RTSP.html">a
+recipe to stream a Linux desktop using VLC to a instance of Kodi</a>.
+During the day I received valuable feedback, and thanks to the
+suggestions I have been able to rewrite the recipe into a much simpler
+approach requiring no setup at all. It is a single script that take
+care of it all.</p>
+
+<p>This new script uses GStreamer instead of VLC to capture the
+desktop and stream it to Kodi. This fixed the video quality issue I
+saw initially. It further removes the need to add a m3u file on the
+Kodi machine, as it instead connects to
+<a href="https://kodi.wiki/view/JSON-RPC_API/v8">the JSON-RPC API in
+Kodi</a> and simply ask Kodi to play from the stream created using
+GStreamer. Streaming the desktop to Kodi now become trivial. Copy
+the script below, run it with the DNS name or IP address of the kodi
+server to stream to as the only argument, and watch your screen show
+up on the Kodi screen. Note, it depend on multicast on the local
+network, so if you need to stream outside the local network, the
+script must be modified. Also note, I have no idea if audio work, as
+I only care about the picture part.</p>
+
+<blockquote><pre>
+#!/bin/sh
+#
+# Stream the Linux desktop view to Kodi. See
+# http://people.skolelinux.org/pere/blog/Streaming_the_Linux_desktop_to_Kodi_using_VLC_and_RTSP.html
+# for backgorund information.
+
+# Make sure the stream is stopped in Kodi and the gstreamer process is
+# killed if something go wrong (for example if curl is unable to find the
+# kodi server). Do the same when interrupting this script.
+kodicmd() {
+ host="$1"
+ cmd="$2"
+ params="$3"
+ curl --silent --header 'Content-Type: application/json' \
+ --data-binary "{ \"id\": 1, \"jsonrpc\": \"2.0\", \"method\": \"$cmd\", \"params\": $params }" \
+ "http://$host/jsonrpc"
+}
+cleanup() {
+ if [ -n "$kodihost" ] ; then
+ # Stop the playing when we end
+ playerid=$(kodicmd "$kodihost" Player.GetActivePlayers "{}" |
+ jq .result[].playerid)
+ kodicmd "$kodihost" Player.Stop "{ \"playerid\" : $playerid }" > /dev/null
+ fi
+ if [ "$gstpid" ] && kill -0 "$gstpid" >/dev/null 2>&1; then
+ kill "$gstpid"
+ fi
+}
+trap cleanup EXIT INT
+
+if [ -n "$1" ]; then
+ kodihost=$1
+ shift
+else
+ kodihost=kodi.local
+fi
+
+mcast=239.255.0.1
+mcastport=1234
+mcastttl=1
+
+pasrc=$(pactl list | grep -A2 'Source #' | grep 'Name: .*\.monitor$' | \
+ cut -d" " -f2|head -1)
+gst-launch-1.0 ximagesrc use-damage=0 ! video/x-raw,framerate=30/1 ! \
+ videoconvert ! queue2 ! \
+ x264enc bitrate=8000 speed-preset=superfast tune=zerolatency qp-min=30 \
+ key-int-max=15 bframes=2 ! video/x-h264,profile=high ! queue2 ! \
+ mpegtsmux alignment=7 name=mux ! rndbuffersize max=1316 min=1316 ! \
+ udpsink host=$mcast port=$mcastport ttl-mc=$mcastttl auto-multicast=1 sync=0 \
+ pulsesrc device=$pasrc ! audioconvert ! queue2 ! avenc_aac ! queue2 ! mux. \
+ > /dev/null 2>&1 &
+gstpid=$!
+
+# Give stream a second to get going
+sleep 1
+
+# Ask kodi to start streaming using its JSON-RPC API
+kodicmd "$kodihost" Player.Open \
+ "{\"item\": { \"file\": \"udp://@$mcast:$mcastport\" } }" > /dev/null
+
+# wait for gst to end
+wait "$gstpid"
+</pre></blockquote>
+
+<p>I hope you find the approach useful. I know I do.</p>
<p>As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/
english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/verkidetfri">verkidetfri</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/
debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>.
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Version_3_1_of_Cura__the_3D_print_slicer__is_now_in_Debian.html">Version 3.1 of Cura, the 3D print slicer, is now in Debian</a></div>
- <div class="date">13th February 2018</div>
- <div class="body"><p>A new version of the
-<a href="https://tracker.debian.org/pkg/cura">3D printer slicer
-software Cura</a>, version 3.1.0, is now available in Debian Testing
-(aka Buster) and Debian Unstable (aka Sid). I hope you find it
-useful. It was uploaded the last few days, and the last update will
-enter testing tomorrow. See the
-<a href="https://ultimaker.com/en/products/cura-software/release-notes">release
-notes</a> for the list of bug fixes and new features. Version 3.2
-was announced 6 days ago. We will try to get it into Debian as
-well.</p>
-
-<p>More information related to 3D printing is available on the
-<a href="https://wiki.debian.org/3DPrinting">3D printing</a> and
-<a href="https://wiki.debian.org/3D-printer">3D printer</a> wiki pages
-in Debian.</p>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Streaming_the_Linux_desktop_to_Kodi_using_VLC_and_RTSP.html">Streaming the Linux desktop to Kodi using VLC and RTSP</a></div>
+ <div class="date">12th July 2018</div>
+ <div class="body"><p>PS: See
+<ahref="http://people.skolelinux.org/pere/blog/Simple_streaming_the_Linux_desktop_to_Kodi_using_GStreamer_and_RTP.html">the
+followup post</a> for a even better approach.</p>
+
+<p>A while back, I was asked by a friend how to stream the desktop to
+my projector connected to Kodi. I sadly had to admit that I had no
+idea, as it was a task I never had tried. Since then, I have been
+looking for a way to do so, preferable without much extra software to
+install on either side. Today I found a way that seem to kind of
+work. Not great, but it is a start.</p>
+
+<p>I had a look at several approaches, for example
+<a href="https://github.com/mfoetsch/dlna_live_streaming">using uPnP
+DLNA as described in 2011</a>, but it required a uPnP server, fuse and
+local storage enough to store the stream locally. This is not going
+to work well for me, lacking enough free space, and it would
+impossible for my friend to get working.</p>
+
+<p>Next, it occurred to me that perhaps I could use VLC to create a
+video stream that Kodi could play. Preferably using
+broadcast/multicast, to avoid having to change any setup on the Kodi
+side when starting such stream. Unfortunately, the only recipe I
+could find using multicast used the rtp protocol, and this protocol
+seem to not be supported by Kodi.</p>
+
+<p>On the other hand, the rtsp protocol is working! Unfortunately I
+have to specify the IP address of the streaming machine in both the
+sending command and the file on the Kodi server. But it is showing my
+desktop, and thus allow us to have a shared look on the big screen at
+the programs I work on.</p>
+
+<p>I did not spend much time investigating codeces. I combined the
+rtp and rtsp recipes from
+<a href="https://wiki.videolan.org/Documentation:Streaming_HowTo/Command_Line_Examples/">the
+VLC Streaming HowTo/Command Line Examples</a>, and was able to get
+this working on the desktop/streaming end.</p>
+
+<blockquote><pre>
+vlc screen:// --sout \
+ '#transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128}:rtp{dst=projector.local,port=1234,sdp=rtsp://192.168.11.4:8080/test.sdp}'
+</pre></blockquote>
+
+<p>I ssh-ed into my Kodi box and created a file like this with the
+same IP address:</p>
+
+<blockquote><pre>
+echo rtsp://192.168.11.4:8080/test.sdp \
+ > /storage/videos/screenstream.m3u
+</pre></blockquote>
+
+<p>Note the 192.168.11.4 IP address is my desktops IP address. As far
+as I can tell the IP must be hardcoded for this to work. In other
+words, if someone elses machine is going to do the steaming, you have
+to update screenstream.m3u on the Kodi machine and adjust the vlc
+recipe. To get started, locate the file in Kodi and select the m3u
+file while the VLC stream is running. The desktop then show up in my
+big screen. :)</p>
+
+<p>When using the same technique to stream a video file with audio,
+the audio quality is really bad. No idea if the problem is package
+loss or bad parameters for the transcode. I do not know VLC nor Kodi
+enough to tell.</p>
+
+<p><strong>Update 2018-07-12</strong>: Johannes Schauer send me a few
+succestions and reminded me about an important step. The "screen:"
+input source is only available once the vlc-plugin-access-extra
+package is installed on Debian. Without it, you will see this error
+message: "VLC is unable to open the MRL 'screen://'. Check the log
+for details." He further found that it is possible to drop some parts
+of the VLC command line to reduce the amount of hardcoded information.
+It is also useful to consider using cvlc to avoid having the VLC
+window in the desktop view. In sum, this give us this command line on
+the source end
+
+<blockquote><pre>
+cvlc screen:// --sout \
+ '#transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128}:rtp{sdp=rtsp://:8080/}'
+</pre></blockquote>
+
+<p>and this on the Kodi end<p>
+
+<blockquote><pre>
+echo rtsp://192.168.11.4:8080/ \
+ > /storage/videos/screenstream.m3u
+</pre></blockquote>
+
+<p>Still bad image quality, though. But I did discover that streaming
+a DVD using dvdsimple:///dev/dvd as the source had excellent video and
+audio quality, so I guess the issue is in the input or transcoding
+parts, not the rtsp part. I've tried to change the vb and ab
+parameters to use more bandwidth, but it did not make a
+difference.</p>
+
+<p>I further received a suggestion from Einar Haraldseid to try using
+gstreamer instead of VLC, and this proved to work great! He also
+provided me with the trick to get Kodi to use a multicast stream as
+its source. By using this monstrous oneliner, I can stream my desktop
+with good video quality in reasonable framerate to the 239.255.0.1
+multicast address on port 1234:
+
+<blockquote><pre>
+gst-launch-1.0 ximagesrc use-damage=0 ! video/x-raw,framerate=30/1 ! \
+ videoconvert ! queue2 ! \
+ x264enc bitrate=8000 speed-preset=superfast tune=zerolatency qp-min=30 \
+ key-int-max=15 bframes=2 ! video/x-h264,profile=high ! queue2 ! \
+ mpegtsmux alignment=7 name=mux ! rndbuffersize max=1316 min=1316 ! \
+ udpsink host=239.255.0.1 port=1234 ttl-mc=1 auto-multicast=1 sync=0 \
+ pulsesrc device=$(pactl list | grep -A2 'Source #' | \
+ grep 'Name: .*\.monitor$' | cut -d" " -f2|head -1) ! \
+ audioconvert ! queue2 ! avenc_aac ! queue2 ! mux.
+</pre></blockquote>
+
+<p>and this on the Kodi end<p>
+
+<blockquote><pre>
+echo udp://@239.255.0.1:1234 \
+ > /storage/videos/screenstream.m3u
+</pre></blockquote>
+
+<p>Note the trick to pick a valid pulseaudio source. It might not
+pick the one you need. This approach will of course lead to trouble
+if more than one source uses the same multicast port and address.
+Note the ttl-mc=1 setting, which limit the multicast packages to the
+local network. If the value is increased, your screen will be
+broadcasted further, one network "hop" for each increase (read up on
+multicast to learn more. :)!</p>
+
+<p>Having cracked how to get Kodi to receive multicast streams, I
+could use this VLC command to stream to the same multicast address.
+The image quality is way better than the rtsp approach, but gstreamer
+seem to be doing a better job.</p>
+
+<blockquote><pre>
+cvlc screen:// --sout '#transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128}:rtp{mux=ts,dst=239.255.0.1,port=1234,sdp=sap}'
+</pre></blockquote>
<p>As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer</a>, <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>.
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Overv_kning_i_Kina_vs__Norge.html">Overvåkning i Kina vs. Norge</a></div>
- <div class="date">12th February 2018</div>
- <div class="body"><p>Jeg lar meg fascinere av en artikkel
-<a href="https://www.dagbladet.no/kultur/terroristene-star-pa-dora/69436116">i
-Dagbladet om Kinas håndtering av Xinjiang</a>, spesielt følgende
-utsnitt:</p>
-
-<p><blockquote>
-
-<p>«I den sørvestlige byen Kashgar nærmere grensa til
-Sentral-Asia meldes det nå at 120.000 uigurer er internert i såkalte
-omskoleringsleirer. Samtidig er det innført et omfattende
-helsesjekk-program med innsamling og lagring av DNA-prøver fra
-absolutt alle innbyggerne. De mest avanserte overvåkingsmetodene
-testes ut her. Programmer for å gjenkjenne ansikter og stemmer er på
-plass i regionen. Der har de lokale myndighetene begynt å installere
-GPS-systemer i alle kjøretøy og egne sporingsapper i
-mobiltelefoner.</p>
-
-<p>Politimetodene griper så dypt inn i folks dagligliv at motstanden
-mot Beijing-regimet øker.»</p>
-
-</blockquote></p>
-
-<p>Beskrivelsen avviker jo desverre ikke så veldig mye fra tilstanden
-her i Norge.</p>
-
-<table>
-<tr>
-<th>Dataregistrering</th>
-<th>Kina</th>
-<th>Norge</th>
-
-<tr>
-<td>Innsamling og lagring av DNA-prøver fra befolkningen</td>
-<td>Ja</td>
-<td>Delvis, planlagt for alle nyfødte.</td>
-</tr>
-
-<tr>
-<td>Ansiktsgjenkjenning</td>
-<td>Ja</td>
-<td>Ja</td>
-</tr>
-
-<tr>
-<td>Stemmegjenkjenning</td>
-<td>Ja</td>
-<td>Nei</td>
-</tr>
-
-<tr>
-<td>Posisjons-sporing av mobiltelefoner</td>
-<td>Ja</td>
-<td>Ja</td>
-</tr>
-
-<tr>
-<td>Posisjons-sporing av biler</td>
-<td>Ja</td>
-<td>Ja</td>
-</tr>
-
-</table>
-
-<p>I Norge har jo situasjonen rundt Folkehelseinstituttets lagring av
-DNA-informasjon på vegne av politiet, der de nektet å slette
-informasjon politiet ikke hadde lov til å ta vare på, gjort det klart
-at DNA tar vare på ganske lenge. I tillegg finnes det utallige
-biobanker som lagres til evig tid, og det er planer om å innføre
-<a href="https://www.aftenposten.no/norge/i/75E9/4-av-10-mener-staten-bor-lagre-DNA-profiler-pa-alle-nyfodte">evig
-lagring av DNA-materiale fra alle spebarn som fødes</a> (med mulighet
-for å be om sletting).</p>
-
-<p>I Norge er det system på plass for ansiktsgjenkjenning, som
-<a href="https://www.nrk.no/norge/kun-gardermoen-har-teknologi-for-ansiktsgjenkjenning-i-norge-1.12719461">en
-NRK-artikkel fra 2015</a> forteller er aktiv på Gardermoen, samt
-<a href="https://www.dagbladet.no/nyheter/inntil-27-000-bor-i-norge-under-falsk-id/60500781">brukes
-til å analysere bilder innsamlet av myndighetene</a>. Brukes det også
-flere plasser? Det er tett med overvåkningskamera kontrollert av
-politi og andre myndigheter i for eksempel Oslo sentrum.</p>
-
-<p>Jeg er ikke kjent med at Norge har noe system for identifisering av
-personer ved hjelp av stemmegjenkjenning.</p>
-
-<p>Posisjons-sporing av mobiltelefoner er ruinemessig tilgjengelig for
-blant annet politi, NAV og Finanstilsynet, i tråd med krav i
-telefonselskapenes konsesjon. I tillegg rapporterer smarttelefoner
-sin posisjon til utviklerne av utallige mobil-apper, der myndigheter
-og andre kan hente ut informasjon ved behov. Det er intet behov for
-noen egen app for dette.</p>
-
-<p>Posisjons-sporing av biler er rutinemessig tilgjengelig via et tett
-nett av målepunkter på veiene (automatiske bomstasjoner,
-køfribrikke-registrering, automatiske fartsmålere og andre veikamera).
-Det er i tillegg vedtatt at alle nye biler skal selges med utstyr for
-GPS-sporing (eCall).</p>
-
-<p>Det er jammen godt vi lever i et liberalt demokrati, og ikke en
-overvåkningsstat, eller?</p>
-
-<p>Som vanlig, hvis du bruker Bitcoin og ønsker å vise din støtte til
-det jeg driver med, setter jeg pris på om du sender Bitcoin-donasjoner
-til min adresse
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/What_is_the_most_supported_MIME_type_in_Debian_in_2018_.html">What is the most supported MIME type in Debian in 2018?</a></div>
+ <div class="date"> 9th July 2018</div>
+ <div class="body"><p>Five years ago,
+<a href="http://people.skolelinux.org/pere/blog/What_is_the_most_supported_MIME_type_in_Debian_.html">I
+measured what the most supported MIME type in Debian was</a>, by
+analysing the desktop files in all packages in the archive. Since
+then, the DEP-11 AppStream system has been put into production, making
+the task a lot easier. This made me want to repeat the measurement,
+to see how much things changed. Here are the new numbers, for
+unstable only this time:
+
+<p><strong>Debian Unstable:</strong></p>
+
+<pre>
+ count MIME type
+ ----- -----------------------
+ 56 image/jpeg
+ 55 image/png
+ 49 image/tiff
+ 48 image/gif
+ 39 image/bmp
+ 38 text/plain
+ 37 audio/mpeg
+ 34 application/ogg
+ 33 audio/x-flac
+ 32 audio/x-mp3
+ 30 audio/x-wav
+ 30 audio/x-vorbis+ogg
+ 29 image/x-portable-pixmap
+ 27 inode/directory
+ 27 image/x-portable-bitmap
+ 27 audio/x-mpeg
+ 26 application/x-ogg
+ 25 audio/x-mpegurl
+ 25 audio/ogg
+ 24 text/html
+</pre>
+
+<p>The list was created like this using a sid chroot: "cat
+/var/lib/apt/lists/*sid*_dep11_Components-amd64.yml.gz| zcat | awk '/^
+- \S+\/\S+$/ {print $2 }' | sort | uniq -c | sort -nr | head -20"</p>
+
+<p>It is interesting to see how image formats have passed text/plain
+as the most announced supported MIME type. These days, thanks to the
+AppStream system, if you run into a file format you do not know, and
+want to figure out which packages support the format, you can find the
+MIME type of the file using "file --mime <filename>", and then
+look up all packages announcing support for this format in their
+AppStream metadata (XML or .desktop file) using "appstreamcli
+what-provides mimetype <mime-type>. For example if you, like
+me, want to know which packages support inode/directory, you can get a
+list like this:</p>
+
+<p><blockquote><pre>
+% appstreamcli what-provides mimetype inode/directory | grep Package: | sort
+Package: anjuta
+Package: audacious
+Package: baobab
+Package: cervisia
+Package: chirp
+Package: dolphin
+Package: doublecmd-common
+Package: easytag
+Package: enlightenment
+Package: ephoto
+Package: filelight
+Package: gwenview
+Package: k4dirstat
+Package: kaffeine
+Package: kdesvn
+Package: kid3
+Package: kid3-qt
+Package: nautilus
+Package: nemo
+Package: pcmanfm
+Package: pcmanfm-qt
+Package: qweborf
+Package: ranger
+Package: sirikali
+Package: spacefm
+Package: spacefm
+Package: vifm
+%
+</pre></blockquote></p>
+
+<p>Using the same method, I can quickly discover that the Sketchup file
+format is not yet supported by any package in Debian:</p>
+
+<p><blockquote><pre>
+% appstreamcli what-provides mimetype application/vnd.sketchup.skp
+Could not find component providing 'mimetype::application/vnd.sketchup.skp'.
+%
+</pre></blockquote></p>
+
+<p>Yesterday I used it to figure out which packages support the STL 3D
+format:</p>
+
+<p><blockquote><pre>
+% appstreamcli what-provides mimetype application/sla|grep Package
+Package: cura
+Package: meshlab
+Package: printrun
+%
+</pre></blockquote></p>
+
+<p>PS: A new version of Cura was uploaded to Debian yesterday.</p>
+
+<p>As usual, if you use Bitcoin and want to show your support of my
+activities, please send Bitcoin donations to my address
<b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
</div>
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/isenkram">isenkram</a>.
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/How_hard_can______and___be_.html">How hard can æ, ø and å be?</a></div>
- <div class="date">11th February 2018</div>
- <div class="body"><img src="http://people.skolelinux.org/pere/blog/images/2018-02-11-peppes-unicode.jpeg" align="right"/>
-
-<p>We write 2018, and it is 30 years since Unicode was introduced.
-Most of us in Norway have come to expect the use of our alphabet to
-just work with any computer system. But it is apparently beyond reach
-of the computers printing recites at a restaurant. Recently I visited
-a Peppes pizza resturant, and noticed a few details on the recite.
-Notice how 'ø' and 'å' are replaced with strange symbols in
-'Servitør', 'Å BETALE', 'Beløp pr. gjest', 'Takk for besøket.' and 'Vi
-gleder oss til å se deg igjen'.</p>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Debian_APT_upgrade_without_enough_free_space_on_the_disk___.html">Debian APT upgrade without enough free space on the disk...</a></div>
+ <div class="date"> 8th July 2018</div>
+ <div class="body"><p>Quite regularly, I let my Debian Sid/Unstable chroot stay untouch
+for a while, and when I need to update it there is not enough free
+space on the disk for apt to do a normal 'apt upgrade'. I normally
+would resolve the issue by doing 'apt install <somepackages>' to
+upgrade only some of the packages in one batch, until the amount of
+packages to download fall below the amount of free space available.
+Today, I had about 500 packages to upgrade, and after a while I got
+tired of trying to install chunks of packages manually. I concluded
+that I did not have the spare hours required to complete the task, and
+decided to see if I could automate it. I came up with this small
+script which I call 'apt-in-chunks':</p>
-<p>I would say that this state is passed sad and over in embarrassing.</p>
+<p><blockquote><pre>
+#!/bin/sh
+#
+# Upgrade packages when the disk is too full to upgrade every
+# upgradable package in one lump. Fetching packages to upgrade using
+# apt, and then installing using dpkg, to avoid changing the package
+# flag for manual/automatic.
+
+set -e
+
+ignore() {
+ if [ "$1" ]; then
+ grep -v "$1"
+ else
+ cat
+ fi
+}
+
+for p in $(apt list --upgradable | ignore "$@" |cut -d/ -f1 | grep -v '^Listing...'); do
+ echo "Upgrading $p"
+ apt clean
+ apt install --download-only -y $p
+ for f in /var/cache/apt/archives/*.deb; do
+ if [ -e "$f" ]; then
+ dpkg -i /var/cache/apt/archives/*.deb
+ break
+ fi
+ done
+done
+</pre></blockquote></p>
-<p>I removed personal and private information to be nice.</p>
+<p>The script will extract the list of packages to upgrade, try to
+download the packages needed to upgrade one package, install the
+downloaded packages using dpkg. The idea is to upgrade packages
+without changing the APT mark for the package (ie the one recording of
+the package was manually requested or pulled in as a dependency). To
+use it, simply run it as root from the command line. If it fail, try
+'apt install -f' to clean up the mess and run the script again. This
+might happen if the new packages conflict with one of the old
+packages. dpkg is unable to remove, while apt can do this.</p>
+
+<p>It take one option, a package to ignore in the list of packages to
+upgrade. The option to ignore a package is there to be able to skip
+the packages that are simply too large to unpack. Today this was
+'ghc', but I have run into other large packages causing similar
+problems earlier (like TeX).</p>
+
+<p>Update 2018-07-08: Thanks to Paul Wise, I am aware of two
+alternative ways to handle this. The "unattended-upgrades
+--minimal-upgrade-steps" option will try to calculate upgrade sets for
+each package to upgrade, and then upgrade them in order, smallest set
+first. It might be a better option than my above mentioned script.
+Also, "aptutude upgrade" can upgrade single packages, thus avoiding
+the need for using "dpkg -i" in the script above.</p>
<p>As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Legal_to_share_more_than_11_000_movies_listed_on_IMDB_.html">Legal to share more than 11,000 movies listed on IMDB?</a></div>
- <div class="date"> 7th January 2018</div>
- <div class="body"><p>I've continued to track down list of movies that are legal to
-distribute on the Internet, and identified more than 11,000 title IDs
-in The Internet Movie Database (IMDB) so far. Most of them (57%) are
-feature films from USA published before 1923. I've also tracked down
-more than 24,000 movies I have not yet been able to map to IMDB title
-ID, so the real number could be a lot higher. According to the front
-web page for <a href="https://retrofilmvault.com/">Retro Film
-Vault</A>, there are 44,000 public domain films, so I guess there are
-still some left to identify.</p>
-
-<p>The complete data set is available from
-<a href="https://github.com/petterreinholdtsen/public-domain-free-imdb">a
-public git repository</a>, including the scripts used to create it.
-Most of the data is collected using web scraping, for example from the
-"product catalog" of companies selling copies of public domain movies,
-but any source I find believable is used. I've so far had to throw
-out three sources because I did not trust the public domain status of
-the movies listed.</p>
-
-<p>Anyway, this is the summary of the 28 collected data sources so
-far:</p>
-
-<p><pre>
- 2352 entries ( 66 unique) with and 15983 without IMDB title ID in free-movies-archive-org-search.json
- 2302 entries ( 120 unique) with and 0 without IMDB title ID in free-movies-archive-org-wikidata.json
- 195 entries ( 63 unique) with and 200 without IMDB title ID in free-movies-cinemovies.json
- 89 entries ( 52 unique) with and 38 without IMDB title ID in free-movies-creative-commons.json
- 344 entries ( 28 unique) with and 655 without IMDB title ID in free-movies-fesfilm.json
- 668 entries ( 209 unique) with and 1064 without IMDB title ID in free-movies-filmchest-com.json
- 830 entries ( 21 unique) with and 0 without IMDB title ID in free-movies-icheckmovies-archive-mochard.json
- 19 entries ( 19 unique) with and 0 without IMDB title ID in free-movies-imdb-c-expired-gb.json
- 6822 entries ( 6669 unique) with and 0 without IMDB title ID in free-movies-imdb-c-expired-us.json
- 137 entries ( 0 unique) with and 0 without IMDB title ID in free-movies-imdb-externlist.json
- 1205 entries ( 57 unique) with and 0 without IMDB title ID in free-movies-imdb-pd.json
- 84 entries ( 20 unique) with and 167 without IMDB title ID in free-movies-infodigi-pd.json
- 158 entries ( 135 unique) with and 0 without IMDB title ID in free-movies-letterboxd-looney-tunes.json
- 113 entries ( 4 unique) with and 0 without IMDB title ID in free-movies-letterboxd-pd.json
- 182 entries ( 100 unique) with and 0 without IMDB title ID in free-movies-letterboxd-silent.json
- 229 entries ( 87 unique) with and 1 without IMDB title ID in free-movies-manual.json
- 44 entries ( 2 unique) with and 64 without IMDB title ID in free-movies-openflix.json
- 291 entries ( 33 unique) with and 474 without IMDB title ID in free-movies-profilms-pd.json
- 211 entries ( 7 unique) with and 0 without IMDB title ID in free-movies-publicdomainmovies-info.json
- 1232 entries ( 57 unique) with and 1875 without IMDB title ID in free-movies-publicdomainmovies-net.json
- 46 entries ( 13 unique) with and 81 without IMDB title ID in free-movies-publicdomainreview.json
- 698 entries ( 64 unique) with and 118 without IMDB title ID in free-movies-publicdomaintorrents.json
- 1758 entries ( 882 unique) with and 3786 without IMDB title ID in free-movies-retrofilmvault.json
- 16 entries ( 0 unique) with and 0 without IMDB title ID in free-movies-thehillproductions.json
- 63 entries ( 16 unique) with and 141 without IMDB title ID in free-movies-vodo.json
-11583 unique IMDB title IDs in total, 8724 only in one list, 24647 without IMDB title ID
-</pre></p>
-
-<p> I keep finding more data sources. I found the cinemovies source
-just a few days ago, and as you can see from the summary, it extended
-my list with 63 movies. Check out the mklist-* scripts in the git
-repository if you are curious how the lists are created. Many of the
-titles are extracted using searches on IMDB, where I look for the
-title and year, and accept search results with only one movie listed
-if the year matches. This allow me to automatically use many lists of
-movies without IMDB title ID references at the cost of increasing the
-risk of wrongly identify a IMDB title ID as public domain. So far my
-random manual checks have indicated that the method is solid, but I
-really wish all lists of public domain movies would include unique
-movie identifier like the IMDB title ID. It would make the job of
-counting movies in the public domain a lot easier.</p>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/The_worlds_only_stone_power_plant_.html">The worlds only stone power plant?</a></div>
+ <div class="date">30th June 2018</div>
+ <div class="body"><p>So far, at least hydro-electric power, coal power, wind power,
+solar power, and wood power are well known. Until a few days ago, I
+had never heard of stone power. Then I learn about a quarry in a
+mountain in
+<a href="https://en.wikipedia.org/wiki/Bremanger">Bremanger</a> i
+Norway, where
+<a href="https://www.bontrup.com/en/activities/raw-materials/bremanger-quarry/">the
+Bremanger Quarry</a> company is extracting stone and dumping the stone
+into a shaft leading to its shipping harbour. This downward movement
+in this shaft is used to produce electricity. In short, it is using
+falling rocks instead of falling water to produce electricity, and
+according to its own statements it is producing more power than it is
+using, and selling the surplus electricity to the Norwegian power
+grid. I find the concept truly amazing. Is this the worlds only
+stone power plant?</p>
<p>As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett</a>, <a href="http://people.skolelinux.org/pere/blog/tags/verkidetfri">verkidetfri</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Kommentarer_til__Evaluation_of__il_legality__for_Popcorn_Time.html">Kommentarer til «Evaluation of (il)legality» for Popcorn Time</a></div>
- <div class="date">20th December 2017</div>
- <div class="body"><p>I går var jeg i Follo tingrett som sakkyndig vitne og presenterte
- mine undersøkelser rundt
- <a href="https://github.com/petterreinholdtsen/public-domain-free-imdb">telling
- av filmverk i det fri</a>, relatert til
- <a href="https://www.nuug.no/">foreningen NUUG</a>s involvering i
- <a href="https://www.nuug.no/news/tags/dns-domenebeslag/">saken om
- Økokrims beslag og senere inndragning av DNS-domenet
- popcorn-time.no</a>. Jeg snakket om flere ting, men mest om min
- vurdering av hvordan filmbransjen har målt hvor ulovlig Popcorn Time
- er. Filmbransjens måling er så vidt jeg kan se videreformidlet uten
- endringer av norsk politi, og domstolene har lagt målingen til grunn
- når de har vurdert Popcorn Time både i Norge og i utlandet (tallet
- 99% er referert også i utenlandske domsavgjørelser).</p>
-
-<p>I forkant av mitt vitnemål skrev jeg et notat, mest til meg selv,
- med de punktene jeg ønsket å få frem. Her er en kopi av notatet jeg
- skrev og ga til aktoratet. Merkelig nok ville ikke dommerene ha
- notatet, så hvis jeg forsto rettsprosessen riktig ble kun
- histogram-grafen lagt inn i dokumentasjonen i saken. Dommerne var
- visst bare interessert i å forholde seg til det jeg sa i retten,
- ikke det jeg hadde skrevet i forkant. Uansett så antar jeg at flere
- enn meg kan ha glede av teksten, og publiserer den derfor her.
- Legger ved avskrift av dokument 09,13, som er det sentrale
- dokumentet jeg kommenterer.</p>
-
-<p><strong>Kommentarer til «Evaluation of (il)legality» for Popcorn
- Time</strong></p>
-
-<p><strong>Oppsummering</strong></p>
-
-<p>Målemetoden som Økokrim har lagt til grunn når de påstår at 99% av
- filmene tilgjengelig fra Popcorn Time deles ulovlig har
- svakheter.</p>
-
-<p>De eller den som har vurdert hvorvidt filmer kan lovlig deles har
- ikke lyktes med å identifisere filmer som kan deles lovlig og har
- tilsynelatende antatt at kun veldig gamle filmer kan deles lovlig.
- Økokrim legger til grunn at det bare finnes èn film, Charlie
- Chaplin-filmen «The Circus» fra 1928, som kan deles fritt blant de
- som ble observert tilgjengelig via ulike Popcorn Time-varianter.
- Jeg finner tre flere blant de observerte filmene: «The Brain That
- Wouldn't Die» fra 1962, «God’s Little Acre» fra 1958 og «She Wore a
- Yellow Ribbon» fra 1949. Det er godt mulig det finnes flere. Det
- finnes dermed minst fire ganger så mange filmer som lovlig kan deles
- på Internett i datasettet Økokrim har lagt til grunn når det påstås
- at mindre enn 1 % kan deles lovlig.</p>
-
-<p>Dernest, utplukket som gjøres ved søk på tilfeldige ord hentet fra
- ordlisten til Dale-Chall avviker fra årsfordelingen til de brukte
- filmkatalogene som helhet, hvilket påvirker fordelingen mellom
- filmer som kan lovlig deles og filmer som ikke kan lovlig deles. I
- tillegg gir valg av øvre del (de fem første) av søkeresultatene et
- avvik fra riktig årsfordeling, hvilket påvirker fordelingen av verk
- i det fri i søkeresultatet.</p>
-
-<p>Det som måles er ikke (u)lovligheten knyttet til bruken av Popcorn
- Time, men (u)lovligheten til innholdet i bittorrent-filmkataloger
- som vedlikeholdes uavhengig av Popcorn Time.</p>
-
-<p>Omtalte dokumenter: 09,12, <a href="#dok-09-13">09,13</a>, 09,14,
-09,18, 09,19, 09,20.</p>
-
-<p><strong>Utfyllende kommentarer</strong></p>
-
-<p>Økokrim har forklart domstolene at minst 99% av alt som er
- tilgjengelig fra ulike Popcorn Time-varianter deles ulovlig på
- Internet. Jeg ble nysgjerrig på hvordan de er kommet frem til dette
- tallet, og dette notatet er en samling kommentarer rundt målingen
- Økokrim henviser til. Litt av bakgrunnen for at jeg valgte å se på
- saken er at jeg er interessert i å identifisere og telle hvor mange
- kunstneriske verk som er falt i det fri eller av andre grunner kan
- lovlig deles på Internett, og dermed var interessert i hvordan en
- hadde funnet den ene prosenten som kanskje deles lovlig.</p>
-
-<p>Andelen på 99% kommer fra et ukreditert og udatert notatet som tar
- mål av seg å dokumentere en metode for å måle hvor (u)lovlig ulike
- Popcorn Time-varianter er.</p>
-
-<p>Raskt oppsummert, så forteller metodedokumentet at på grunn av at
- det ikke er mulig å få tak i komplett liste over alle filmtitler
- tilgjengelig via Popcorn Time, så lages noe som skal være et
- representativt utvalg ved å velge 50 søkeord større enn tre tegn fra
- ordlisten kjent som Dale-Chall. For hvert søkeord gjøres et søk og
- de første fem filmene i søkeresultatet samles inn inntil 100 unike
- filmtitler er funnet. Hvis 50 søkeord ikke var tilstrekkelig for å
- nå 100 unike filmtitler ble flere filmer fra hvert søkeresultat lagt
- til. Hvis dette heller ikke var tilstrekkelig, så ble det hentet ut
- og søkt på flere tilfeldig valgte søkeord inntil 100 unike
- filmtitler var identifisert.</p>
-
-<p>Deretter ble for hver av filmtitlene «vurdert hvorvidt det var
- rimelig å forvente om at verket var vernet av copyright, ved å se på
- om filmen var tilgjengelig i IMDB, samt se på regissør,
- utgivelsesår, når det var utgitt for bestemte markedsområder samt
- hvilke produksjons- og distribusjonsselskap som var registrert» (min
- oversettelse).</p>
-
-<p>Metoden er gjengitt både i de ukrediterte dokumentene 09,13 og
- 09,19, samt beskrevet fra side 47 i dokument 09,20, lysark datert
- 2017-02-01. Sistnevnte er kreditert Geerart Bourlon fra Motion
- Picture Association EMEA. Metoden virker å ha flere svakheter som
- gir resultatene en slagside. Den starter med å slå fast at det ikke
- er mulig å hente ut en komplett liste over alle filmtitler som er
- tilgjengelig, og at dette er bakgrunnen for metodevalget. Denne
- forutsetningen er ikke i tråd med det som står i dokument 09,12, som
- ikke heller har oppgitt forfatter og dato. Dokument 09,12 forteller
- hvordan hele kataloginnholdet ble lasted ned og talt opp. Dokument
- 09,12 er muligens samme rapport som ble referert til i dom fra Oslo
- Tingrett 2017-11-03
- (<a href="https://www.domstol.no/no/Enkelt-domstol/Oslo--tingrett/Nyheter/ma-sperre-for-popcorn-time/">sak
- 17-093347TVI-OTIR/05</a>) som rapport av 1. juni 2017 av Alexander
- Kind Petersen, men jeg har ikke sammenlignet dokumentene ord for ord
- for å kontrollere dette.</p>
-
-<p>IMDB er en forkortelse for The Internet Movie Database, en
- anerkjent kommersiell nettjeneste som brukes aktivt av både
- filmbransjen og andre til å holde rede på hvilke spillefilmer (og
- endel andre filmer) som finnes eller er under produksjon, og
- informasjon om disse filmene. Datakvaliteten er høy, med få feil og
- få filmer som mangler. IMDB viser ikke informasjon om
- opphavsrettslig status for filmene på infosiden for hver film. Som
- del av IMDB-tjenesten finnes det lister med filmer laget av
- frivillige som lister opp det som antas å være verk i det fri.</p>
-
-<p>Det finnes flere kilder som kan brukes til å finne filmer som er
- allemannseie (public domain) eller har bruksvilkår som gjør det
- lovlig for alleå dele dem på Internett. Jeg har de siste ukene
- forsøkt å samle og krysskoble disse listene for å forsøke å telle
- antall filmer i det fri. Ved å ta utgangspunkt i slike lister (og
- publiserte filmer for Internett-arkivets del), har jeg så langt
- klart å identifisere over 11 000 filmer, hovedsaklig spillefilmer.
-
-<p>De aller fleste oppføringene er hentet fra IMDB selv, basert på det
- faktum at alle filmer laget i USA før 1923 er falt i det fri.
- Tilsvarende tidsgrense for Storbritannia er 1912-07-01, men dette
- utgjør bare veldig liten del av spillefilmene i IMDB (19 totalt).
- En annen stor andel kommer fra Internett-arkivet, der jeg har
- identifisert filmer med referanse til IMDB. Internett-arkivet, som
- holder til i USA, har som
- <a href="https://archive.org/about/terms.php">policy å kun publisere
- filmer som det er lovlig å distribuere</a>. Jeg har under arbeidet
- kommet over flere filmer som har blitt fjernet fra
- Internett-arkivet, hvilket gjør at jeg konkluderer med at folkene
- som kontrollerer Internett-arkivet har et aktivt forhold til å kun
- ha lovlig innhold der, selv om det i stor grad er drevet av
- frivillige. En annen stor liste med filmer kommer fra det
- kommersielle selskapet Retro Film Vault, som selger allemannseide
- filmer til TV- og filmbransjen, Jeg har også benyttet meg av lister
- over filmer som hevdes å være allemannseie, det være seg Public
- Domain Review, Public Domain Torrents og Public Domain Movies (.net
- og .info), samt lister over filmer med Creative Commons-lisensiering
- fra Wikipedia, VODO og The Hill Productions. Jeg har gjort endel
- stikkontroll ved å vurdere filmer som kun omtales på en liste. Der
- jeg har funnet feil som har gjort meg i tvil om vurderingen til de
- som har laget listen har jeg forkastet listen fullstendig (gjelder
- en liste fra IMDB).</p>
-
-<p>Ved å ta utgangspunkt i verk som kan antas å være lovlig delt på
- Internett (fra blant annet Internett-arkivet, Public Domain
- Torrents, Public Domain Reivew og Public Domain Movies), og knytte
- dem til oppføringer i IMDB, så har jeg så langt klart å identifisere
- over 11 000 filmer (hovedsaklig spillefilmer) det er grunn til å tro
- kan lovlig distribueres av alle på Internett. Som ekstra kilder er
- det brukt lister over filmer som antas/påstås å være allemannseie.
- Disse kildene kommer fra miljøer som jobber for å gjøre tilgjengelig
- for almennheten alle verk som er falt i det fri eller har
- bruksvilkår som tillater deling.
-
-<p>I tillegg til de over 11 000 filmene der tittel-ID i IMDB er
- identifisert, har jeg funnet mer enn 20 000 oppføringer der jeg ennå
- ikke har hatt kapasitet til å spore opp tittel-ID i IMDB. Noen av
- disse er nok duplikater av de IMDB-oppføringene som er identifisert
- så langt, men neppe alle. Retro Film Vault hevder å ha 44 000
- filmverk i det fri i sin katalog, så det er mulig at det reelle
- tallet er betydelig høyere enn de jeg har klart å identifisere så
- langt. Konklusjonen er at tallet 11 000 er nedre grense for hvor
- mange filmer i IMDB som kan lovlig deles på Internett. I følge <a
- href="http://www.imdb.com/stats">statistikk fra IMDB</a> er det 4.6
- millioner titler registrert, hvorav 3 millioner er TV-serieepisoder.
- Jeg har ikke funnet ut hvordan de fordeler seg per år.</p>
-
-<p>Hvis en fordeler på år alle tittel-IDene i IMDB som hevdes å lovlig
- kunne deles på Internett, får en følgende histogram:</p>
-
-<p align="center"><img width="80%" src="http://people.skolelinux.org/pere/blog/images/2017-12-20-histogram-year.png"></p>
-
-<p>En kan i histogrammet se at effekten av manglende registrering
- eller fornying av registrering er at mange filmer gitt ut i USA før
- 1978 er allemannseie i dag. I tillegg kan en se at det finnes flere
- filmer gitt ut de siste årene med bruksvilkår som tillater deling,
- muligens på grunn av fremveksten av
- <a href="https://creativecommons.org/">Creative
- Commons</a>-bevegelsen..</p>
-
-<p>For maskinell analyse av katalogene har jeg laget et lite program
- som kobler seg til bittorrent-katalogene som brukes av ulike Popcorn
- Time-varianter og laster ned komplett liste over filmer i
- katalogene, noe som bekrefter at det er mulig å hente ned komplett
- liste med alle filmtitler som er tilgjengelig. Jeg har sett på fire
- bittorrent-kataloger. Den ene brukes av klienten tilgjengelig fra
- www.popcorntime.sh og er navngitt 'sh' i dette dokumentet. Den
- andre brukes i følge dokument 09,12 av klienten tilgjengelig fra
- popcorntime.ag og popcorntime.sh og er navngitt 'yts' i dette
- dokumentet. Den tredje brukes av websidene tilgjengelig fra
- popcorntime-online.tv og er navngitt 'apidomain' i dette dokumentet.
- Den fjerde brukes av klienten tilgjenglig fra popcorn-time.to i
- følge dokument 09,12, og er navngitt 'ukrfnlge' i dette
- dokumentet.</p>
-
-<p>Metoden Økokrim legger til grunn skriver i sitt punkt fire at
- skjønn er en egnet metode for å finne ut om en film kan lovlig deles
- på Internett eller ikke, og sier at det ble «vurdert hvorvidt det
- var rimelig å forvente om at verket var vernet av copyright». For
- det første er det ikke nok å slå fast om en film er «vernet av
- copyright» for å vite om det er lovlig å dele den på Internett eller
- ikke, da det finnes flere filmer med opphavsrettslige bruksvilkår
- som tillater deling på Internett. Eksempler på dette er Creative
- Commons-lisensierte filmer som Citizenfour fra 2014 og Sintel fra
- 2010. I tillegg til slike finnes det flere filmer som nå er
- allemannseie (public domain) på grunn av manglende registrering
- eller fornying av registrering selv om både regisør,
- produksjonsselskap og distributør ønsker seg vern. Eksempler på
- dette er Plan 9 from Outer Space fra 1959 og Night of the Living
- Dead fra 1968. Alle filmer fra USA som var allemannseie før
- 1989-03-01 forble i det fri da Bern-konvensjonen, som tok effekt i
- USA på det tidspunktet, ikke ble gitt tilbakevirkende kraft. Hvis
- det er noe
- <a href="http://www.latimes.com/local/lanow/la-me-ln-happy-birthday-song-lawsuit-decision-20150922-story.html">historien
- om sangen «Happy birthday»</a> forteller oss, der betaling for bruk
- har vært krevd inn i flere tiår selv om sangen ikke egentlig var
- vernet av åndsverksloven, så er det at hvert enkelt verk må vurderes
- nøye og i detalj før en kan slå fast om verket er allemannseie eller
- ikke, det holder ikke å tro på selverklærte rettighetshavere. Flere
- eksempel på verk i det fri som feilklassifiseres som vernet er fra
- dokument 09,18, som lister opp søkeresultater for klienten omtalt
- som popcorntime.sh og i følge notatet kun inneholder en film (The
- Circus fra 1928) som under tvil kan antas å være allemannseie.</p>
-
-<p>Ved rask gjennomlesning av dokument 09,18, som inneholder
- skjermbilder fra bruk av en Popcorn Time-variant, fant jeg omtalt
- både filmen «The Brain That Wouldn't Die» fra 1962 som er
- <a href="https://archive.org/details/brain_that_wouldnt_die">tilgjengelig
- fra Internett-arkivet</a> og som
- <a href="https://en.wikipedia.org/wiki/List_of_films_in_the_public_domain_in_the_United_States">i
- følge Wikipedia er allemannseie i USA</a> da den ble gitt ut i
- 1962 uten 'copyright'-merking, og filmen «God’s Little Acre» fra
- 1958 <a href="https://en.wikipedia.org/wiki/God%27s_Little_Acre_%28film%29">som
- er lagt ut på Wikipedia</a>, der det fortelles at
- sort/hvit-utgaven er allemannseie. Det fremgår ikke fra dokument
- 09,18 om filmen omtalt der er sort/hvit-utgaven. Av
- kapasitetsårsaker og på grunn av at filmoversikten i dokument 09,18
- ikke er maskinlesbart har jeg ikke forsøkt å sjekke alle filmene som
- listes opp der om mot liste med filmer som er antatt lovlig kan
- distribueres på Internet.</p>
-
-<p>Ved maskinell gjennomgang av listen med IMDB-referanser under
- regnearkfanen 'Unique titles' i dokument 09.14, fant jeg i tillegg
- filmen «She Wore a Yellow Ribbon» fra 1949) som nok også er
- feilklassifisert. Filmen «She Wore a Yellow Ribbon» er tilgjengelig
- fra Internett-arkivet og markert som allemannseie der. Det virker
- dermed å være minst fire ganger så mange filmer som kan lovlig deles
- på Internett enn det som er lagt til grunn når en påstår at minst
- 99% av innholdet er ulovlig. Jeg ser ikke bort fra at nærmere
- undersøkelser kan avdekke flere. Poenget er uansett at metodens
- punkt om «rimelig å forvente om at verket var vernet av copyright»
- gjør metoden upålitelig.</p>
-
-<p>Den omtalte målemetoden velger ut tilfeldige søketermer fra
- ordlisten Dale-Chall. Den ordlisten inneholder 3000 enkle engelske
- som fjerdeklassinger i USA er forventet å forstå. Det fremgår ikke
- hvorfor akkurat denne ordlisten er valgt, og det er uklart for meg
- om den er egnet til å få et representativt utvalg av filmer. Mange
- av ordene gir tomt søkeresultat. Ved å simulerte tilsvarende søk
- ser jeg store avvik fra fordelingen i katalogen for enkeltmålinger.
- Dette antyder at enkeltmålinger av 100 filmer slik målemetoden
- beskriver er gjort, ikke er velegnet til å finne andel ulovlig
- innhold i bittorrent-katalogene.</p>
-
-<p>En kan motvirke dette store avviket for enkeltmålinger ved å gjøre
- mange søk og slå sammen resultatet. Jeg har testet ved å
- gjennomføre 100 enkeltmålinger (dvs. måling av (100x100=) 10 000
- tilfeldig valgte filmer) som gir mindre, men fortsatt betydelig
- avvik, i forhold til telling av filmer pr år i hele katalogen.</p>
-
-<p>Målemetoden henter ut de fem øverste i søkeresultatet.
- Søkeresultatene er sortert på antall bittorrent-klienter registrert
- som delere i katalogene, hvilket kan gi en slagside mot hvilke
- filmer som er populære blant de som bruker bittorrent-katalogene,
- uten at det forteller noe om hvilket innhold som er tilgjengelig
- eller hvilket innhold som deles med Popcorn Time-klienter. Jeg har
- forsøkt å måle hvor stor en slik slagside eventuelt er ved å
- sammenligne fordelingen hvis en tar de 5 nederste i søkeresultatet i
- stedet. Avviket for disse to metodene for endel kataloger er godt
- synlig på histogramet. Her er histogram over filmer funnet i den
- komplette katalogen (grønn strek), og filmer funnet ved søk etter
- ord i Dale-Chall. Grafer merket 'top' henter fra de 5 første i
- søkeresultatet, mens de merket 'bottom' henter fra de 5 siste. En
- kan her se at resultatene påvirkes betydelig av hvorvidt en ser på
- de første eller de siste filmene i et søketreff.</p>
-
-<p align="center">
- <img width="40%" src="http://people.skolelinux.org/pere/blog/images/2017-12-20-histogram-year-sh-top.png"/>
- <img width="40%" src="http://people.skolelinux.org/pere/blog/images/2017-12-20-histogram-year-sh-bottom.png"/>
- <br>
- <img width="40%" src="http://people.skolelinux.org/pere/blog/images/2017-12-20-histogram-year-yts-top.png"/>
- <img width="40%" src="http://people.skolelinux.org/pere/blog/images/2017-12-20-histogram-year-yts-bottom.png"/>
- <br>
- <img width="40%" src="http://people.skolelinux.org/pere/blog/images/2017-12-20-histogram-year-ukrfnlge-top.png"/>
- <img width="40%" src="http://people.skolelinux.org/pere/blog/images/2017-12-20-histogram-year-ukrfnlge-bottom.png"/>
- <br>
- <img width="40%" src="http://people.skolelinux.org/pere/blog/images/2017-12-20-histogram-year-apidomain-top.png"/>
- <img width="40%" src="http://people.skolelinux.org/pere/blog/images/2017-12-20-histogram-year-apidomain-bottom.png"/>
-</p>
-
-<p>Det er verdt å bemerke at de omtalte bittorrent-katalogene ikke er
- laget for bruk med Popcorn Time. Eksempelvis tilhører katalogen
- YTS, som brukes av klientet som ble lastes ned fra popcorntime.sh,
- et selvstendig fildelings-relatert nettsted YTS.AG med et separat
- brukermiljø. Målemetoden foreslått av Økokrim måler dermed ikke
- (u)lovligheten rundt bruken av Popcorn Time, men (u)lovligheten til
- innholdet i disse katalogene.</p>
-
-<hr>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Add_on_to_control_the_projector_from_within_Kodi.html">Add-on to control the projector from within Kodi</a></div>
+ <div class="date">26th June 2018</div>
+ <div class="body"><p>My movie playing setup involve <a href="https://kodi.tv/">Kodi</a>,
+<a href="https://openelec.tv">OpenELEC</a> (probably soon to be
+replaced with <a href="https://libreelec.tv/">LibreELEC</a>) and an
+Infocus IN76 video projector. My projector can be controlled via both
+a infrared remote controller, and a RS-232 serial line. The vendor of
+my projector, <a href="https://www.infocus.com/">InFocus</a>, had been
+sensible enough to document the serial protocol in its user manual, so
+it is easily available, and I used it some years ago to write
+<a href="https://github.com/petterreinholdtsen/infocus-projector-control">a
+small script to control the projector</a>. For a while now, I longed
+for a setup where the projector was controlled by Kodi, for example in
+such a way that when the screen saver went on, the projector was
+turned off, and when the screen saver exited, the projector was turned
+on again.</p>
+
+<p>A few days ago, with very good help from parts of my family, I
+managed to find a Kodi Add-on for controlling a Epson projector, and
+got in touch with its author to see if we could join forces and make a
+Add-on with support for several projectors. To my pleasure, he was
+positive to the idea, and we set out to add InFocus support to his
+add-on, and make the add-on suitable for the official Kodi add-on
+repository.</p>
+
+<p>The Add-on is now working (for me, at least), with a few minor
+adjustments. The most important change I do relative to the master
+branch in the github repository is embedding the
+<a href="https://github.com/pyserial/pyserial">pyserial module</a> in
+the add-on. The long term solution is to make a "script" type
+pyserial module for Kodi, that can be pulled in as a dependency in
+Kodi. But until that in place, I embed it.</p>
+
+<p>The add-on can be configured to turn on the projector when Kodi
+starts, off when Kodi stops as well as turn the projector off when the
+screensaver start and on when the screesaver stops. It can also be
+told to set the projector source when turning on the projector.
+
+<p>If this sound interesting to you, check out
+<a href="https://github.com/fredrik-eriksson/kodi_projcontrol">the
+project github repository</a>. Perhaps you can send patches to
+support your projector too? As soon as we find time to wrap up the
+latest changes, it should be available for easy installation using any
+Kodi instance.</p>
+
+<p>For future improvements, I would like to add projector model
+detection and the ability to adjust the brightness level of the
+projector from within Kodi. We also need to figure out how to handle
+the cooling period of the projector. My projector refuses to turn on
+for 60 seconds after it was turned off. This is not handled well by
+the add-on at the moment.</p>
-<p id="dok-09-13">Metoden fra Økokrims dokument 09,13 i straffesaken
-om DNS-beslag.</p>
-
-<p><strong>1. Evaluation of (il)legality</strong></p>
-
-<p><strong>1.1. Methodology</strong>
-
-<p>Due to its technical configuration, Popcorn Time applications don't
-allow to make a full list of all titles made available. In order to
-evaluate the level of illegal operation of PCT, the following
-methodology was applied:</p>
-
-<ol>
-
- <li>A random selection of 50 keywords, greater than 3 letters, was
- made from the Dale-Chall list that contains 3000 simple English
- words1. The selection was made by using a Random Number
- Generator2.</li>
-
- <li>For each keyword, starting with the first randomly selected
- keyword, a search query was conducted in the movie section of the
- respective Popcorn Time application. For each keyword, the first
- five results were added to the title list until the number of 100
- unique titles was reached (duplicates were removed).</li>
-
- <li>For one fork, .CH, insufficient titles were generated via this
- approach to reach 100 titles. This was solved by adding any
- additional query results above five for each of the 50 keywords.
- Since this still was not enough, another 42 random keywords were
- selected to finally reach 100 titles.</li>
-
- <li>It was verified whether or not there is a reasonable expectation
- that the work is copyrighted by checking if they are available on
- IMDb, also verifying the director, the year when the title was
- released, the release date for a certain market, the production
- company/ies of the title and the distribution company/ies.</li>
-
-</ol>
-
-<p><strong>1.2. Results</strong></p>
-
-<p>Between 6 and 9 June 2016, four forks of Popcorn Time were
-investigated: popcorn-time.to, popcorntime.ag, popcorntime.sh and
-popcorntime.ch. An excel sheet with the results is included in
-Appendix 1. Screenshots were secured in separate Appendixes for each
-respective fork, see Appendix 2-5.</p>
-
-<p>For each fork, out of 100, de-duplicated titles it was possible to
-retrieve data according to the parameters set out above that indicate
-that the title is commercially available. Per fork, there was 1 title
-that presumably falls within the public domain, i.e. the 1928 movie
-"The Circus" by and with Charles Chaplin.</p>
-
-<p>Based on the above it is reasonable to assume that 99% of the movie
-content of each fork is copyright protected and is made available
-illegally.</p>
-
-<p>This exercise was not repeated for TV series, but considering that
-besides production companies and distribution companies also
-broadcasters may have relevant rights, it is reasonable to assume that
-at least a similar level of infringement will be established.</p>
-
-<p>Based on the above it is reasonable to assume that 99% of all the
-content of each fork is copyright protected and are made available
-illegally.</p>
+<p>As usual, if you use Bitcoin and want to show your support of my
+activities, please send Bitcoin donations to my address
+<b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
</div>
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/
fildeling">fildeling</a>, <a href="http://people.skolelinux.org/pere/blog/tags/freeculture">freeculture</a>, <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>, <a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett</a>, <a href="http://people.skolelinux.org/pere/blog/tags/verkidetfri">verkidetfri</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/
english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>.
</div>
<li><a href="http://people.skolelinux.org/pere/blog/archive/2018/02/">February (5)</a></li>
-<li><a href="http://people.skolelinux.org/pere/blog/archive/2018/03/">March (3)</a></li>
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2018/03/">March (5)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2018/04/">April (3)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2018/06/">June (2)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2018/07/">July (5)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2018/08/">August (3)</a></li>
</ul></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/chrpath">chrpath (2)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/debian">debian (156)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/debian">debian (161)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (158)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/drivstoffpriser">drivstoffpriser (4)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/english">english (370)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/english">english (382)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (23)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/intervju">intervju (42)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/isenkram">isenkram (15)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/isenkram">isenkram (16)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/kart">kart (20)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/mesh network">mesh network (8)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (39)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (41)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/nice free software">nice free software (9)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/nice free software">nice free software (10)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk (296)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk (299)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug (190)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/open311">open311 (2)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (71)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (72)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern (105)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern (107)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/raid">raid (2)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/scraperwiki">scraperwiki (2)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (53)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (54)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (4)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/stortinget">stortinget (12)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance (54)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance (55)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin (4)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/verkidetfri">verkidetfri (11)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/video">video (62)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/video">video (66)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (4)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/web">web (40)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/web">web (41)</a></li>
</ul>
projects / homepage.git / blobdiff