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:
- For more info, see our website at
-
SEE ALSO
mjpegtools(1),
mpeg2enc(1),
yuvscaler(1),
yuv2lav(1),
yuvdenoise(1),
yuvplay(1)