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       lav2wav [-s num] [-c num] [-v num] [-I] 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  an other sound processing tool, that is able to
       handle wave.  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), Mov­
       tar  (.movtar),  Quicktime (.qt/.mov) or editlist files so
       long as they  are  all  lavtools-  readable  (e.g.  MJPEG-
       encoded AVI/Quicktime/Movtar or DV type 2 AVI).


       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


       The  "WAV"  file format (technically: RIFF) is really very
       much less than ideal for a tool intended  to  be  used  in
       pipelines  as  lav2wav is.  The Problem is that the header
       includes a field specifying the length of the file.   This
       can't  be filled in except by seeking back to the begining
       and over-writing.  If the output is unseek-able (e.g. pipe
       lav2wav  simply  writes a large length into the header and
       leaves it at that).  Most tools like sox(1)  or  mp2enc(1)
       either ignore the length field anyway or only give a warn­


       This man page was written by Bernhard Praschinger.
       If you have questions, remarks, problems or you just  want

MJPEG Linux Square         2 June 2001                 lav2wav(1)

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