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lav2divx




SYNTAX

       lav2divx [options] -o [output AVI] lavfile1 [lavfile2  ...
       lavfileN]


DESCRIPTION

       This utility reads lavtools-compatible files and uses them
       to generate a .avi file using avifile.

       Note that you must have avifile available in order to  use
       this  utility.   If  building from a CVS snapshot or copy,
       this will be detected at build time.

       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).


OPTIONS

       -o <filename>

       --outputfile <filename>
              Mandatory</fR>   (except   for  --help,  -V).   The
              resulting encoded avi file is written to  filename.

       -b <kbps>

       --divxbitrate <kbps>
              Specifies  the  output  video bitrate (kilobits per
              second). Default is 1800.

       -a <kbps>

       --mp3bitrate <kbps>
              Specifies the output audio  bitrate  (kilobits  per
              second).  Default  is 56 for mono audio and 128 for
              stereo.

       -e <frames>

       --endframe <frames>
              Encode only frames frames. Default is to encode all
              frames  present  in video on stdin (extra audio, if
              available, is ignored).

       -c <width>x<height>+<left>+<top>

       --crop <width>x<height>+<left>+<top>
              Include only the specified rectangle in the encoded
              output.   Default  is  no cropping, entire frame is
              encoded.

       -V

       --version
              Output version and exit.

       -s <rate>

       --forcedaudiorate <rate>
              Overrides audio rate (if audio is present).  Should
              only be used if rate is not correct in wav or input
              lav file.  (This option may  disappear,  I  can  no
              longer find any cases where it is needed.)

       -g

       --guess
              Attempt  to guess the argument to use for -c.  This
              looks at the first 100 hundred frames and  attempts
              to determine where the transition from a black bor­
              der to active content occurs.  It does  not  always
              work (that's why it's a guess!) but can help narrow
              the process  down  some.   This  is  useful  as  an
              invariant   border  can  usually  be  discarded  to
              increase the available  bandwidth  for  the  active
              portion  of the frame.  When using this option, the
              utility exits after the first 100 frames.

       -k <num>

       --keyframes <num>
              Sets the keyframes attribute of the video  encoder.
              Not  all  avifile  encoders use this attribute, but
              when an encoder does, the attribute  specifies  the
              number  of  frames  between keyframes.  The default
              depends on the codec being used.

       -C <num>

       --crispness <num>
              Sets the crispness attribute of the video  encoder.
              Not  all avifile encoders use this attribute.  When
              it is used, it affects how edges are  detected  and
              encoded.  I have found that higher values may cause
              increased  bandwidth  usage   with   some   codecs.
              Default 50.

       -E <fourcc>

       --encoder <fourcc>
              Specifies  which  video  encoder  to use.  You must
              specify the  encoder  using  the  "fourcc"  of  the
              codec.  The default is "DIV3". Common ones include:
              you.

       -m

       --mono
              Performs a rather naive combination of stereo input
              audio to monoaural.

       -v <level>

       --verbose <level>
              Specifies the level of verbosity  on  output.   All
              output  occurs  to stderr. 2 shows progress and all
              logging, 1 shows informative  output  and  0  shows
              only important messages.

       --help
              Display a brief summary of help and exit.


EXAMPLES

       lav2divx  -o output.avi -b 600 -E DIV5 input.eli input.avi
       input.mov


BUGS

       No checking or handling of large output avi files is  per­
       formed  (i.e.  output files larger than 2 GiB may break on
       your installation  depending  on  a  number  of  installa­
       tion-specific parameters).

       Interlaced video isn't handled well.

       <insert general pithy comment about additional hidden bugs
       remaining here>


AUTHOR

       Shawn Sulma <lav2divx@athos.cx>
       If you have questions, remarks, problems or you just  want
       to  contact  the developers, the main mailing list for the
       MJPEG-tools is:
           mjpeg-users@lists.sourceforge.net
       For more info, see our website at
           http://mjpeg.sourceforge.net/


SEE ALSO

       yuv2divx(1), lav2yuv(1), divxdec(1), lav2wav(1)

MJPEG Linux Square       2001 December 19             lav2divx(1)

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