[FFmpeg-trac] #2967(avcodec:new): mjpeg enc: ljpeg output is incompatible with other programs

[FFmpeg]

#2967: mjpeg enc: ljpeg output is incompatible with other programs
------------------------------------+-----------------------------------
             Reporter:  ami_stuff   |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avcodec
              Version:  git-master  |               Resolution:
             Keywords:  ljpeg       |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
------------------------------------+-----------------------------------

Comment (by cehoyos):

 Reference software is this patch afaict:
 ftp://ftp.graphicsmagick.org/pub/GraphicsMagick/delegates/ljpeg-6b.tar.gz
 It can be applied on the reference jpg software:
 http://www.ijg.org/files/jpegsrc.v6b.tar.gz
 FFmpeg can decode the files produced with the resulting encoder, the
 decoder does decode FFmpeg samples visually ok but warns about their
 bitdepth (`Must downscale data from 9 bits to 8`) and the output is not
 lossless.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/2967#comment:21>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker