lav2yuv(1)
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 yuv2dfil
ter(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 mov
tar 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
- -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 in 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 other
wise.) - -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' (correspond
ing to a standard TV screen); another useful value is
'16:9' (corresponding to widescreen TV).
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