[FFmpeg-user] jpeg2000/libopenjpeg lossless?

[Peter B.]

Hello,

I'm currently drafting an article about containers and lossless codecs
for long-term video archiving [1].
During my speed/size codec comparison tests, I couldn't manage to
configure libopenjpeg to produce a lossless output video (checked with
framemd5).

Does anyone know which parameters do I require to encode JPEG2000
lossless using libopenjpeg?
(Yes, I did try to google)
"-qscale:v 0" (which works for dirac/libschroedinger) doesn't work with
libopenjpeg.


Thanks in advance,
Pb



== References:
[1]
http://download.das-werkstatt.com/pb/mthk/info/video/comparison_video_codecs_containers.html