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Recording sound as well as video with FFmpeg and x11grab

Hi,

Under slackware 12.2 and the svn FFmpeg I have managed to capture the x11 display with FFmpeg and x11grab as follows:

Code:

ffmpeg -vframes 100 -r 30 -g 300 -s 1024x768 -f x11grab -i :0.0 \

      -vcodec libx264 -vpre hq -crf 22 -threads 0 test.mp4

and this works well enough but I would like to add in the system sound as well. Documentation for this is pretty poor but suggests something like the following:

Code:

ffmpeg -f oss -i /dev/audio -vframes 100 -r 30 -g 300 -s 1024x768 \

      -f x11grab -i :0.0 -vcodec libx264 -vpre hq -crf 22 -threads 0 \

      test.mp4

But on my system this fails without error. Has anybody managed to catch sound as well as the x11 display in this manner?

Andrew

Quote:

Originally Posted by andrew.46 (Post 3565797)

on my system this fails without error.

If you add "-v -v -v" it might tell you a bit more.

I'm not sure /dev/audio is the right one, don't you mean /dev/dsp ?

See here for more info:
http://ffmpeg.org/ffmpeg-doc.html#SEC3

Do you really want to use ffmpeg directly?

If not, recordmydesktop is the convenient tool of choice for recording X (for screencasts etc.).