NAME

       lav2yuv - Convert a MJPEG file to raw yuv

SYNOPSIS

       lav2yuv [options] lavfile1 [lavfile2 ... lavfileN]

DESCRIPTION

       lav2yuv  converts  an MJPEG video sequence described by a sequence of MJPEG video files and/or edit lists
       pointing to such files into the simple uncompressed planar 4:2:0 Y'CbCr format, as  used  by  mpeg2enc(1)
       MPEG encoder and image processing filters like yuvscaler(1) or yuv2dfilter(1) or yuvdenoise(1).

       Output  is  to  stdout so that by piping the output of lav2yuv into a suitable pipeline it is possible to
       process and then encode or play back video recorded in any of the  mjpegtools  MJPEG  container  formats:
       AVI, quicktime or edit lists describing editted versions of video held in such files.

       Mixing different files with different video formats is currently not possible.

       The -S -T -D options are used for scene detection which is used by linux video studio.

OPTIONS

       lav2yuv accepts the following options:

       -m   Force mono-chrome

       -c   Conceal frames containing corrupt MJPEG data by repeating the preceeding good frame.

       -S list.el
            Output a scene list with scene detection

       -T num
            Set scene detection threshold to num (default: 4)

       -D num
            Width decimation to use for scene detection (default: 2)

       -o num
            Frame offset - skip num frames at the beginning.  if num is negative all but the last num frames are
            skipped

       -f num
            Only num frames are written to stdout. 0 means that all frames are processed.

       -A width:height
            Set/override  the sample aspect ratio (SAR) emitted in the output stream header.  Currently, the SAR
            is only auto-detected for DV files, and guessed otherwise.

       -P width:height
            Set the intended/approximate display aspect ratio (DAR) for the stream.  This value is only used  to
            guess  the  SAR  when  it  cannot  be  detected  from  the  input  stream.  The default DAR is '4:3'
            (corresponding to a standard TV screen); another useful value is '16:9' (corresponding to widescreen
            TV).

       -C chroma
            Set output chroma (default: '420jpeg').  Currently, '420jpeg',  '420mpeg2',  '420paldv',  '422'  are
            available.

       -x   Exchange fields.  Useful if the field order was reversed during editing.

AUTHOR

       This man page was originally written by Bernhard Praschinger.
       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

       mjpegtools(1), mpeg2enc(1), yuvscaler(1), yuv2lav(1), yuvdenoise(1), yuvplay(1)

MJPEG Tools Team                                  6 March 2002                                        lav2yuv(1)