yuv2lav man page on aLinux

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yuv2lav(1)		      MJPEG tools manual		    yuv2lav(1)

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] -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.

       -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%	 qual‐
	      ity 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.

       -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 con‐
       tact 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),	 yuvs‐
       caler(1)

MJPEG Linux Square		  2 June 2001			    yuv2lav(1)
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