bionic (1) yuv2lav.1.gz

NAME

       yuv2lav - encodes lavtool's raw YUV frame streams into MJPEG files

SYNOPSIS

       yuv2lav [-f a|A|q|m] [-q num] [-b num] [-I num] [-m num] [-v num] [-w file] -o output-file

DESCRIPTION

       yuv2lav  is  a  simple  MJPEG  encoder  for  raw  YUV  frame streams as they are emitted by lav2yuv(1) or
       lavpipe(1), for example. It reads its input from stdin and is capable of writing AVI and Quicktime.

OPTIONS

       The command line options allow to specify the output file name, JPEG encoding quality and the  amount  of
       memory that will be allocated for JPEG compressed data.

       -o output-file
              This (compulsorary) option sets the name of the file that yuv2lav will write its output to. If the
              output file contains a % (e.g. file%02d.avi), the output will be written to multiple files in case
              this is necessary (file00.avi, file01.avi and so on).

       -f a|A|q
              This sets the output file format, which has to be one of
               a - for AVI file output,
               A - for AVI with reversed fields,
               q - for Quicktime output or
              AVI with reversed field of course only makes sense if yuv2lav's feed is an interlaced video source
              and should only be needed if you experience frame reversal problems in your output.  If you  don't
              use  that  option  yuv2lav  will  set  the  output format to AVI if the last 3 char are avi, or to
              Quicktime if you use mov. If you use the -f option it overides the setting in the filename

       -q num This option specifies the JPEG encoding quality as passed through to libjpeg. The default value is
              80,  num  must  lie  within  24...100 inclusive (think of it as percentage values, although with a
              lossy compression algorithm like JPEG, keeping 100% of the  original  quality  is  of  course  not
              really possible).

       -b num This  option specifies the size of the buffer (in kBytes) that yuv2lav allocates in order to store
              the compressed JPEG data in it. The default value (256k) is perfectly enough for 100% quality full
              sized  PAL/NTSC,  but if you want to compress Super-Mega-HDTV or if you are low on memory, you can
              use this option to suit your needs.

       -m num This is the maximum size (in MB) per file. Normally this depends on the output file type.

       -I num Force a specific interlacing type. 0 means  no  interlacing,  1  means  top-field-first,  2  means
              bottom-field-first.

       -w file
              This  is  the  WAV file containing audio data to be combined with the video stream into the output
              file.

       -v num Verbosity level. 0 means only print error messages, 2 prints full debug output.

       -?     Display a synopsis of the command syntax.

EXAMPLES

       lav2yuv movie.avi | yuv2lav -fq -q 30 lowbitrate.qt
              would recompress movie.avi as a low bit rate Quicktime file.

       lavpipe input.pli | yuv2lav -q80 output.avi
              would save the movie assembled by lavpipe as a single AVI file.

BUGS

       If you experience any problems with this tool, please feel free to contact the developers (see below).

AUTHOR

       This man page was written by pHilipp Zabel.
       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

       lav2yuv(1), lavpipe(1), lavplay(1), lavrec(1), mpeg2enc(1), yuvscaler(1)