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lav2wav - Online in the Cloud

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lav2wav - Extract the audio out of MJPEG container files to stdout


lav2wav [-s num] [-c num] [-v num] [-I] [-R] [-r samplerate, bitesize, channels] lavfile1
[lavfile2 ... lavfileN]


lav2wav can be used to extract the audio to stdout. This output goes to stdout and can be
saved as a wav file or piped to another sound processing tool that is able to handle the
wav format. This can be mp2enc and toolame for mpeg layer 2 audio, or for example lame
for mpeg layer 3 audio.

The input files may be any combination of AVI (.avi), Quicktime (.qt) or editlist files so
long as they are all lavtools- readable (e.g. MJPEG-encoded AVI/Quicktime or DV type 2


lav2wav accepts the following options:

-s num
Start extracting at video frame (num)

-c num
Extract (num) frames of audio

-v num
Verbosity level (0, 1 or 2)

-I Ignore unsupported bitrates/bits per sample

-R If the file does not contain any sound. lav2wav will create silence with 44100kHz
Sampelrate, 16 Bit audio bitsize and 2 Chanels

-r sr,bs,ch
If the file does not contain any sound lav2wav will generate silence with the values
you supply the samplerate (sr), audio-bitsize (bs) and channel (ch).

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