Opened 9 months ago
Closed 7 months ago
#10905 closed defect (fixed)
HTJ2K lossless decoding errors
Reported by: | Pierre-Anthony Lemieux | Owned by: | |
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Priority: | critical | Component: | avcodec |
Version: | git-master | Keywords: | j2k jpeg2000 htj2k |
Cc: | Blocked By: | ||
Blocking: | Reproduced by developer: | no | |
Analyzed by developer: | no |
Description
Native J2K decoder is not lossless when decoding lossless J2K files that use the Part 15 block coder (HTJ2K).
How to reproduce:
ojph_compress -i build/in.tiff -o build/out.j2c -reversible true ffmpeg -i build/out.j2c build/out.tiff ffmpeg -i build/in.tiff -i build/out.tiff -filter_complex "psnr" -f null -
PSNR is not infinite, in contrast to:
ojph_expand -i build/out.j2c -o build/out.ojph.tiff ffmpeg -i build/in.tiff -i build/out.ojph.tiff -filter_complex "psnr" -f null -
OpenJPH is available at https://github.com/aous72/OpenJPH.
Attachments (3)
Change History (5)
by , 9 months ago
comment:1 by , 9 months ago
The frame is from the Netflix Meridian short (https://opencontent.netflix.com/)
comment:2 by , 7 months ago
Resolution: | → fixed |
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Status: | new → closed |
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