[FFmpeg-devel] [PATCH 3/3] [RFC] Remove libopenjpegenc

Tomas Härdin git at haerdin.se
Wed Apr 5 15:55:18 EEST 2023


fre 2023-03-31 klockan 01:14 +0200 skrev Michael Niedermayer:
> FFmpeg has its own jpeg2000 encoder
> This avoids a dependency
> 
> This is not ready yet as we still miss xyz / ya pixel formats, and
> some cinama stuff, but
> it seems this should be the direction to aim at. And it seems there
> is not much missing

If we can reach feature parity then this sounds OK. In retrospect maybe
I should have worked on improving libopenjpeg performance instead. Oh
well.

We need the HT stuff in, and also my threading patchset rebased and
pushed as well. Else we'll have worse performance than opj. With my
patchset, and a bit of work on Caleb and pal's patchset, then we might
be able to bring j2k performance (both part1 and ht) far above opj

There may be some other details as well regarding features of j2kdec vs
opj but I forget

/Tomas




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