encodes lavtool’s raw YUV frame streams into MJPEG files
see also :
lav2yuv - lavpipe - lavplay - mpeg2enc - yuvscaler
[-f a|A|q|m] [-q
num] [-b num] [-I num]
[-m num] [-v num] [-w
file] -o output-file
add an example, a script, a trick and tips
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.
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.
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.
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).
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
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).
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.
This is the maximum size (in MB) per file. Normally this
depends on the output file type.
Force a specific interlacing type. 0 means no
interlacing, 1 means top-field-first, 2 means
This is the WAV file containing
audio data to be combined with the video stream into the
Verbosity level. 0 means only print error messages, 2
prints full debug output.
Display a synopsis of the command syntax.
experience any problems with this tool, please feel free to
contact the developers (see below).
lavpipe , lavplay , lavrec,
mpeg2enc , yuvscaler
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
For more info, see our website at