On Fri, Dec 28, 2012 at 8:08 PM, Anthony Hogan <anthony-luv@hogan.id.au> wrote:

Hi all,

I have a TV which has a built in USB record feature (which basically
dumps DVB-T MPEG TS in 2GB chunks). I'd like to pull the audio track
out of something I recorded. VLC happily plays the file and identifies
the video, audio and EPG info in the transport stream, but if, for
example, I run:

avconv -i ... -acodec copy audio.mp3

... I end up with about 2 seconds of silence.

It seems there's a couple of dummy streams and also that the overall
file is prefixed with what looks like null garbage. I know that if vlc
can play it, there's gotta be a way of extracting it, but must admit
that I haven't had any luck thus far.

Any ideas on recommended tools for stubborn MPEG TS demuxing?

I use mencoder to convert files from our PVR to AVI, you should be able to just extract the audio, a little script I made for my wife to use to convert on her netbook is attached

Mark "Pockets" Clohesy

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