blog/archive/2018/02/02.rss

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   3         <channel>
   4                 <title>Petter Reinholdtsen - Entries from February 2018</title>
   5                 <description>Entries from February 2018</description>
   6                 <link>http://people.skolelinux.org/pere/blog/</link>
   7
   8
   9         <item>
  10                 <title>Using VLC to stream bittorrent sources</title>
  11                 <link>http://people.skolelinux.org/pere/blog/Using_VLC_to_stream_bittorrent_sources.html</link>
  12                 <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Using_VLC_to_stream_bittorrent_sources.html</guid>
  13                 <pubDate>Wed, 14 Feb 2018 08:00:00 +0100</pubDate>
  14                 <description>&lt;p&gt;A few days ago, a new major version of
  15 &lt;a href=&quot;https://www.videolan.org/&quot;&gt;VLC&lt;/a&gt; was announced, and I
  16 decided to check out if it now supported streaming over
  17 &lt;a href=&quot;http://bittorrent.org/&quot;&gt;bittorrent&lt;/a&gt; and
  18 &lt;a href=&quot;https://webtorrent.io&quot;&gt;webtorrent&lt;/a&gt;.  Bittorrent is one of
  19 the most efficient ways to distribute large files on the Internet, and
  20 Webtorrent is a variant of Bittorrent using
  21 &lt;a href=&quot;https://webrtc.org&quot;&gt;WebRTC&lt;/a&gt; as its transport channel,
  22 allowing web pages to stream and share files using the same technique.
  23 The network protocols are not identical, so a client supporting one of
  24 them can not talk to a client supporting the other.  I was a bit
  25 surprised with what I discovered.  Looking at
  26 &lt;a href=&quot;https://www.videolan.org/vlc/releases/3.0.0.html&quot;&gt;the release
  27 notes&lt;/a&gt; did not help answering this question, so I started searching
  28 the web.  I found several news articles from 2013, most of them
  29 tracing the news from Torrentfreak
  30 (&quot;&lt;a href=https://torrentfreak.com/open-source-giant-vlc-mulls-bittorrent-support-130211/&quot;&gt;Open
  31 Source Giant VLC Mulls BitTorrent Streaming Support&lt;/a&gt;&quot;), about a
  32 initiative to pay someone to create a VLC patch for bittorrent
  33 support.  To figure out what happend with this initiative, I headed
  34 over to the #videolan IRC channel and asked if there were some bug or
  35 feature request tickets tracking such feature.  I got an answer from
  36 lead developer Jean-Babtiste Kempf, telling me that there was a patch
  37 but neither he nor anyone else knew where it was.  So I searched a bit
  38 more, and came across an independent
  39 &lt;a href=&quot;https://github.com/johang/vlc-bittorrent&quot;&gt;VLC plugin to add
  40 bittorrent support&lt;/a&gt;, created by Johan Gunnarsson in 2016/2017.
  41 Again according to Jean-Babtiste, this is not the patch he was talking
  42 about.&lt;/p&gt;
  43
  44 &lt;p&gt;Anyway, to test the plugin, I made a working Debian package from
  45 the git repository, with some modifications.  After installing this
  46 package, I could stream videos from
  47 &lt;a href=&quot;https://www.archive.org/&quot;&gt;The Internet Archive&lt;/a&gt; using VLC
  48 commands like this:&lt;/p&gt;
  49
  50 &lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
  51 vlc https://archive.org/download/LoveNest/LoveNest_archive.torrent
  52 &lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;
  53
  54 &lt;p&gt;The plugin is supposed to handle magnet links too, but since The
  55 Internet Archive do not have magnet links and I did not want to spend
  56 time tracking down another source, I have not tested it.  It can take
  57 quite a while before the video start playing without any indication of
  58 what is going on from VLC.  It took 10-20 seconds when I measured it.
  59 Some times the plugin seem unable to find the correct video file to
  60 play, and show the metadata XML file name in the VLC status line.  I
  61 have no idea why.&lt;/p&gt;
  62
  63 &lt;p&gt;I have created a &lt;a href=&quot;https://bugs.debian.org/890360&quot;&gt;request for
  64 a new package in Debian (RFP)&lt;/a&gt; and
  65 &lt;a href=&quot;https://github.com/johang/vlc-bittorrent/issues/1&quot;&gt;asked if
  66 the upstream author is willing to help make this happen&lt;/a&gt;.  Now we
  67 wait to see what come out of this.  I do not want to maintain a
  68 package that is not maintained upstream, nor do I really have time to
  69 maintain more packages myself, so I might leave it at this.  But I
  70 really hope someone step up to do the packaging, and hope upstream is
  71 still maintaining the source.  If you want to help, please update the
  72 RFP request or the upstream issue.&lt;/p&gt;
  73
  74 &lt;p&gt;I have not found any traces of webtorrent support for VLC.&lt;/p&gt;
  75
  76 &lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
  77 activities, please send Bitcoin donations to my address
  78 &lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
  79 </description>
  80         </item>
  81
  82         <item>
  83                 <title>Version 3.1 of Cura, the 3D print slicer, is now in Debian</title>
  84                 <link>http://people.skolelinux.org/pere/blog/Version_3_1_of_Cura__the_3D_print_slicer__is_now_in_Debian.html</link>
  85                 <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Version_3_1_of_Cura__the_3D_print_slicer__is_now_in_Debian.html</guid>
  86                 <pubDate>Tue, 13 Feb 2018 06:20:00 +0100</pubDate>
  87                 <description>&lt;p&gt;A new version of the
  88 &lt;a href=&quot;https://tracker.debian.org/pkg/cura&quot;&gt;3D printer slicer
  89 software Cura&lt;/a&gt;, version 3.1.0, is now available in Debian Testing
  90 (aka Buster) and Debian Unstable (aka Sid).  I hope you find it
  91 useful.  It was uploaded the last few days, and the last update will
  92 enter testing tomorrow.  See the
  93 &lt;a href=&quot;https://ultimaker.com/en/products/cura-software/release-notes&quot;&gt;release
  94 notes&lt;/a&gt; for the list of bug fixes and new features.  Version 3.2
  95 was announced 6 days ago.  We will try to get it into Debian as
  96 well.&lt;/p&gt;
  97
  98 &lt;p&gt;More information related to 3D printing is available on the
  99 &lt;a href=&quot;https://wiki.debian.org/3DPrinting&quot;&gt;3D printing&lt;/a&gt; and
 100 &lt;a href=&quot;https://wiki.debian.org/3D-printer&quot;&gt;3D printer&lt;/a&gt; wiki pages
 101 in Debian.&lt;/p&gt;
 102
 103 &lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
 104 activities, please send Bitcoin donations to my address
 105 &lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
 106 </description>
 107         </item>
 108
 109         <item>
 110                 <title>Overvåkning i Kina vs. Norge</title>
 111                 <link>http://people.skolelinux.org/pere/blog/Overv_kning_i_Kina_vs__Norge.html</link>
 112                 <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Overv_kning_i_Kina_vs__Norge.html</guid>
 113                 <pubDate>Mon, 12 Feb 2018 09:40:00 +0100</pubDate>
 114                 <description>&lt;p&gt;Jeg lar meg fascinere av en artikkel
 115 &lt;a href=&quot;https://www.dagbladet.no/kultur/terroristene-star-pa-dora/69436116&quot;&gt;i
 116 Dagbladet om Kinas håndtering av Xinjiang&lt;/a&gt;, spesielt følgende
 117 utsnitt:&lt;/p&gt;
 118
 119 &lt;p&gt;&lt;blockquote&gt;
 120
 121 &lt;p&gt;«I den sørvestlige byen Kashgar nærmere grensa til
 122 Sentral-Asia meldes det nå at 120.000 uigurer er internert i såkalte
 123 omskoleringsleirer. Samtidig er det innført et omfattende
 124 helsesjekk-program med innsamling og lagring av DNA-prøver fra
 125 absolutt alle innbyggerne. De mest avanserte overvåkingsmetodene
 126 testes ut her. Programmer for å gjenkjenne ansikter og stemmer er på
 127 plass i regionen. Der har de lokale myndighetene begynt å installere
 128 GPS-systemer i alle kjøretøy og egne sporingsapper i
 129 mobiltelefoner.&lt;/p&gt;
 130
 131 &lt;p&gt;Politimetodene griper så dypt inn i folks dagligliv at motstanden
 132 mot Beijing-regimet øker.»&lt;/p&gt;
 133
 134 &lt;/blockquote&gt;&lt;/p&gt;
 135
 136 &lt;p&gt;Beskrivelsen avviker jo desverre ikke så veldig mye fra tilstanden
 137 her i Norge.&lt;/p&gt;
 138
 139 &lt;table&gt;
 140 &lt;tr&gt;
 141 &lt;th&gt;Dataregistrering&lt;/th&gt;
 142 &lt;th&gt;Kina&lt;/th&gt;
 143 &lt;th&gt;Norge&lt;/th&gt;
 144
 145 &lt;tr&gt;
 146 &lt;td&gt;Innsamling og lagring av DNA-prøver fra befolkningen&lt;/td&gt;
 147 &lt;td&gt;Ja&lt;/td&gt;
 148 &lt;td&gt;Delvis, planlagt for alle nyfødte.&lt;/td&gt;
 149 &lt;/tr&gt;
 150
 151 &lt;tr&gt;
 152 &lt;td&gt;Ansiktsgjenkjenning&lt;/td&gt;
 153 &lt;td&gt;Ja&lt;/td&gt;
 154 &lt;td&gt;Ja&lt;/td&gt;
 155 &lt;/tr&gt;
 156
 157 &lt;tr&gt;
 158 &lt;td&gt;Stemmegjenkjenning&lt;/td&gt;
 159 &lt;td&gt;Ja&lt;/td&gt;
 160 &lt;td&gt;Nei&lt;/td&gt;
 161 &lt;/tr&gt;
 162
 163 &lt;tr&gt;
 164 &lt;td&gt;Posisjons-sporing av mobiltelefoner&lt;/td&gt;
 165 &lt;td&gt;Ja&lt;/td&gt;
 166 &lt;td&gt;Ja&lt;/td&gt;
 167 &lt;/tr&gt;
 168
 169 &lt;tr&gt;
 170 &lt;td&gt;Posisjons-sporing av biler&lt;/td&gt;
 171 &lt;td&gt;Ja&lt;/td&gt;
 172 &lt;td&gt;Ja&lt;/td&gt;
 173 &lt;/tr&gt;
 174
 175 &lt;/table&gt;
 176
 177 &lt;p&gt;I Norge har jo situasjonen rundt Folkehelseinstituttets lagring av
 178 DNA-informasjon på vegne av politiet, der de nektet å slette
 179 informasjon politiet ikke hadde lov til å ta vare på, gjort det klart
 180 at DNA tar vare på ganske lenge.  I tillegg finnes det utallige
 181 biobanker som lagres til evig tid, og det er planer om å innføre
 182 &lt;a href=&quot;https://www.aftenposten.no/norge/i/75E9/4-av-10-mener-staten-bor-lagre-DNA-profiler-pa-alle-nyfodte&quot;&gt;evig
 183 lagring av DNA-materiale fra alle spebarn som fødes&lt;/a&gt; (med mulighet
 184 for å be om sletting).&lt;/p&gt;
 185
 186 &lt;p&gt;I Norge er det system på plass for ansiktsgjenkjenning, som
 187 &lt;a href=&quot;https://www.nrk.no/norge/kun-gardermoen-har-teknologi-for-ansiktsgjenkjenning-i-norge-1.12719461&quot;&gt;en
 188 NRK-artikkel fra 2015&lt;/a&gt; forteller er aktiv på Gardermoen, samt
 189 &lt;a href=&quot;https://www.dagbladet.no/nyheter/inntil-27-000-bor-i-norge-under-falsk-id/60500781&quot;&gt;brukes
 190 til å analysere bilder innsamlet av myndighetene&lt;/a&gt;.  Brukes det også
 191 flere plasser?  Det er tett med overvåkningskamera kontrollert av
 192 politi og andre myndigheter i for eksempel Oslo sentrum.&lt;/p&gt;
 193
 194 &lt;p&gt;Jeg er ikke kjent med at Norge har noe system for identifisering av
 195 personer ved hjelp av stemmegjenkjenning.&lt;/p&gt;
 196
 197 &lt;p&gt;Posisjons-sporing av mobiltelefoner er ruinemessig tilgjengelig for
 198 blant annet politi, NAV og Finanstilsynet, i tråd med krav i
 199 telefonselskapenes konsesjon.  I tillegg rapporterer smarttelefoner
 200 sin posisjon til utviklerne av utallige mobil-apper, der myndigheter
 201 og andre kan hente ut informasjon ved behov.  Det er intet behov for
 202 noen egen app for dette.&lt;/p&gt;
 203
 204 &lt;p&gt;Posisjons-sporing av biler er rutinemessig tilgjengelig via et tett
 205 nett av målepunkter på veiene (automatiske bomstasjoner,
 206 køfribrikke-registrering, automatiske fartsmålere og andre veikamera).
 207 Det er i tillegg vedtatt at alle nye biler skal selges med utstyr for
 208 GPS-sporing (eCall).&lt;/p&gt;
 209
 210 &lt;p&gt;Det er jammen godt vi lever i et liberalt demokrati, og ikke en
 211 overvåkningsstat, eller?&lt;/p&gt;
 212
 213 &lt;p&gt;Som vanlig, hvis du bruker Bitcoin og ønsker å vise din støtte til
 214 det jeg driver med, setter jeg pris på om du sender Bitcoin-donasjoner
 215 til min adresse
 216 &lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
 217 </description>
 218         </item>
 219
 220         <item>
 221                 <title>How hard can æ, ø and å be?</title>
 222                 <link>http://people.skolelinux.org/pere/blog/How_hard_can______and___be_.html</link>
 223                 <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/How_hard_can______and___be_.html</guid>
 224                 <pubDate>Sun, 11 Feb 2018 17:10:00 +0100</pubDate>
 225                 <description>&lt;img src=&quot;http://people.skolelinux.org/pere/blog/images/2018-02-11-peppes-unicode.jpeg&quot; align=&quot;right&quot;/&gt;
 226
 227 &lt;p&gt;We write 2018, and it is 30 years since Unicode was introduced.
 228 Most of us in Norway have come to expect the use of our alphabet to
 229 just work with any computer system.  But it is apparently beyond reach
 230 of the computers printing recites at a restaurant.  Recently I visited
 231 a Peppes pizza resturant, and noticed a few details on the recite.
 232 Notice how &#39;ø&#39; and &#39;å&#39; are replaced with strange symbols in
 233 &#39;Servitør&#39;, &#39;Å BETALE&#39;, &#39;Beløp pr. gjest&#39;, &#39;Takk for besøket.&#39; and &#39;Vi
 234 gleder oss til å se deg igjen&#39;.&lt;/p&gt;
 235
 236 &lt;p&gt;I would say that this state is passed sad and over in embarrassing.&lt;/p&gt;
 237
 238 &lt;p&gt;I removed personal and private information to be nice.&lt;/p&gt;
 239
 240 &lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
 241 activities, please send Bitcoin donations to my address
 242 &lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
 243 </description>
 244         </item>
 245
 246         </channel>
 247 </rss>