lav2yuv - Convert a MJPEG file to raw yuv
] lavfile1 [lavfile2 ...
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
encoder and image processing filters like yuvscaler
(1) or yuvdenoise
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
accepts the following options:
- Force mono-chrome
- Conceal frames containing corrupt MJPEG data by repeating the preceeding
- -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
- -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
- -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
- -C chroma
- Set output chroma (default: '420jpeg'). Currently, '420jpeg', '420mpeg2',
'420paldv', '422' are available.
- Exchange fields. Useful if the field order was reversed during
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