[FFmpeg-user] Mathematically lossless MotionJPEG2000 encoding possible?
Carl Eugen Hoyos
cehoyos at ag.or.at
Mon Oct 27 20:32:52 CET 2014
Christoph Gerstbauer <christophgerstbauer <at> gmail.com> writes:
> I am testing the jpeg2000 encoder (libopenjpeg)
> but I always get a damaged image (Colorshifting,
> Color flickering, etc..)
This doesn't sound familiar to me, how can I
> Generally asked: is it possible to encode to
> Motion JPEG2000 with following pixel formats in
Yes, they all work fine.
> If yes, how is the correct encoding syntax?
> My used syntax:
> ffmpeg -i <inputfile> -vcodec libopenjpeg
> -pix_fmt yuv422p -an <outputfile>
Please always provide an actual command line (no
variables) and the complete, uncut console
output if you ask for support here.
> I am shure that this syntax is not correct
I don't think so.
> (not enough in defining the correct encoding params),
> furthermore I made no setting for LOSSLESS
> encoding mode.
Lossless is the default for libopenjpeg iirc.
> Therefore I just need a HOW TO for jpeg2000
> lossless encoding.
> Addionally: which container formats are supported
> within ffmpeg for MotionJPEG2000?
avi (including mkv), mov, mxf, nut
Finally, please note that ffv1 is faster than
libopenjpeg, compresses better and should make
significantly less trouble than the so-called
"professional" solutions you are being offered.
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