Petter Reinholdtsen

One think I have wanted to figure out for a along time is how to run vlc from cron to do recording of video streams on the net. The task is trivial with mplayer, but I do not really trust the security of mplayer (it crashes too often on strange input), and thus prefer vlc. I finally found a way to do it today. I spent an hour or so searching the web for recipes and reading the documentation. The hardest part was to get rid of the GUI window, but after finding the dummy interface, the command line finally presented itself:

URL=http://www.ping.uio.no/video/rms-oslo_2009.ogg
SAVEFILE=rms.ogg
DISPLAY= vlc -q $URL \
  --sout="#duplicate{dst=std{access=file,url='$SAVEFILE'},dst=nodisplay}" \
  --intf=dummy

The command stream the URL and store it in the SAVEFILE by duplicating the output stream to "nodisplay" and the file, using the dummy interface. The dummy interface and the nodisplay output make sure no X interface is needed.

The cron job then need to start this job with the appropriate URL and file name to save, sleep for the duration wanted, and then kill the vlc process with SIGTERM. Here is a complete script vlc-record to use from at or cron:

#!/bin/sh
set -e
URL="$1"
SAVEFILE="$2"
DURATION="$3"
DISPLAY= vlc -q "$URL" \
  --sout="#duplicate{dst=std{access=file,url='$SAVEFILE'},dst=nodisplay}" \
  --intf=dummy < /dev/null > /dev/null 2>&1 &
pid=$!
sleep $DURATION
kill $pid
wait $pid

Dagbladet melder at det franske idiotforslaget om å kutte Internet-forbindelsen til alle som blir anklaget for å ha brutt opphavsretten 3 ganger ble nedstemt i dag med 21 mot 15 stemmer. Vinklingen i Dagbladet er litt merkelig når en vet at det samme forslaget ble vedtatt i parlamentets andre kammer med 12 mot 4 stemmer, etter at det overraskende ble foreslått å ta saken opp til votering 22:45 sist torsdag, etter sigende i strid med vanlige rutiner i det franske parlamentet.

Det hele blir ennå mer komisk når et vet at presidentens parti er blitt anklaget for å ha brutt opphavsretten. Mon tro om partet skal miste internet-forbindelsen hvis de får 2 anklager til rettet mot seg.