On Thu, Oct 06, 2005 at 06:39:49PM +0200, emaggiani at libero.it wrote:

I want to extract an audio track from an avi to a wav file The video stream is RGB uncompressed the audio stream use ms-ima-adpcm codec I've tried the work with various tools (mjpegtools, ffmpeg, transcode and avidemux...) The mjpegtools works fine on my video stream, but only ffmpeg seems to decode the audio stream. In each case, with ffmpeg, I am able to get only an AC3 audio track that's terribly noiseful!

Can anyone help me? How can I tell to transcode (or lavtrans or lav2wav - for example) to use the ms-ima-adpcm codec ? Thanks

Something like: ffmpeg -i foo.avi -acodec copy foo.wav Or if you want pcm wav file rather than ima-adpcm crap, omit the -acodec copy and it will use the default 'codec' for wav (raw pcm). Rich