[FFmpeg-devel] libopenjpegenc improvements

Michael Niedermayer michaelni at gmx.at
Mon Feb 2 17:40:03 CET 2015

On Wed, Jan 28, 2015 at 04:41:23PM +0100, Jean First wrote:
> This patchset sould alow ffmpeg to create jpeg2000 files conforming to the dci specification.
> Most of the code originates form the image_to_j2k file provided by openjpeg.
> Can someone shed some light, if the following parameter is also needed ?

purely from a compression/quality point of view MCT should be used
for correlated colorspaces like RGB/RGBA but not YUV/YUVA and cannot
be used when theres just 1 component, i dont know what the specs
say about when it must or must not be used

not sure this awnsers your question

Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

The bravest are surely those who have the clearest vision
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notwithstanding go out to meet it. -- Thucydides
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