[Techtalk] VHS to DVD

David Sumbler david at aeolia.co.uk
Tue Jul 24 13:55:57 UTC 2012

On Mon, 2012-07-23 at 16:28 -0400, Anthony de Boer wrote:
> David Sumbler wrote:
> > If I enter 'cat /dev/video0' I get a continuous stream of gibberish,
> > which is what I would expect.  But I can't get VLC to display anything
> > at all.
> That continuous stream might be one of encoded video, if it's anything
> like the capture card I used.
> Type 'cat /dev/video0 > mycapture.mpg', feed some video into the card,
> and then ^C it.  At this point running something like mplayer on the
> file should show you video.
> Usually next I'd run avidemux to chop the static off the front and back
> of the recording and dub into the codec of choice for storage and later
> playback.

I have now tried this.  About 10Mb per second were written to the file.

When I entered 'mplayer mycapture.mpg' I got the following output:

MPlayer SVN-r33713-4.6.1 (C) 2000-2011 MPlayer Team
mplayer: could not connect to socket
mplayer: No such file or directory
Failed to open LIRC support. You will not be able to use your remote

Playing mycapture.mpg.
Invalid seek to negative position ffffffffffffffff!
libavformat file format detected.
[mp3 @ 0x10b47e0] Header missing
[mp3 @ 0x10b47e0] Header missing
[mp3 @ 0x10b47e0] Header missing
[mp3 @ 0x10b47e0] Header missing
[mp3 @ 0x10b47e0] Header missing
[mp3 @ 0x10a3000] Estimating duration from bitrate, this may be
[lavf] stream 0: audio (mp1), -aid 0
Load subtitles in ./
Forced audio codec: mp3
Opening audio decoder: [mp3lib] MPEG layer-2, layer-3

Eventually I used Ctrl-C to get out of mplayer, and got:

MPlayer interrupted by signal 2 in module: init_audio_codec
ADecoder init failed :(
ADecoder init failed :(
Cannot find codec for audio format 0x50.
Audio: no sound
Video: no video

Exiting... (End of file)


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