#11111: When decoding a multilayer DWAA compressed .exr, I get error
decode_block()
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Reporter: Sean | Type: defect
Devonport |
Status: new | Priority: important
Component: ffmpeg | Version: git-
| master
Keywords: exr | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 1 |
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Summary of the bug:
When decoding a multilayer DWAA compressed .exr, the DWAA decompression in
ffmpeg doesn't take into account multilayer. It returns decode_block()
failed.
I've search the code base and see the issue is happening dwa_uncompress
function in lavc/exr exr.c line 200 (SHA
53d0f9afb46ac811269252c9e3be000fc7c3b2cc in git-master). When trying to
add in support for multilayer, I am able to get close to a solution,
however there is still banding and it is not quite right.
I have a attached source multilayer DWAA compressed files to test with as
well as the output of the video with my attempted bug fix. Any help or
guidance to fix this would be greatly appreciated!
How to reproduce:
{{{
% ./ffmpeg_g -layer Composite.Combined -i
"./outputRGBMultilayerEXR1080p/frame_%04d.exr" -profile:v 2 -pix_fmt
yuv422p10le -c:v prores_ks out.mov
ffmpeg version N-116393-g001df47a56
built with Apple clang version 15.0.0 (clang-1500.3.9.4)
}}}
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Ticket URL: <https://trac.ffmpeg.org/ticket/11111>
FFmpeg <https://ffmpeg.org>
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