Opened 6 weeks ago
Closed 5 weeks ago
#11367 closed defect (duplicate)
Chroma artefacts on decoded VVC streams
| Reported by: | Elie Mora | Owned by: | |
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| Priority: | normal | Component: | undetermined |
| Version: | 7.1 | Keywords: | vvc |
| Cc: | Blocked By: | ||
| Blocking: | Reproduced by developer: | yes | |
| Analyzed by developer: | yes |
Description (last modified by )
Some chroma artefacts randomly appear on decoded VVC streams using ffmpeg (or ffplay). The artefacts do not appear using the reference VTM model (tested on VTM-23.3) nor with any VVC-compatible stream analyzer.
How to reproduce:
% ffmpeg -i Visual720p_QP1000000.BIN visual_1280x720.yuv ffplay version 7.1-full_build-www.gyan.dev Copyright (c) 2003-2024 the FFmpeg developers built with gcc 14.2.0 (Rev1, Built by MSYS2 project)
Attachments (1)
Change History (7)
by , 6 weeks ago
| Attachment: | Visual720p_QP1000000.BIN added |
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comment:1 by , 6 weeks ago
| Description: | modified (diff) |
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comment:2 by , 6 weeks ago
| Description: | modified (diff) |
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comment:3 by , 6 weeks ago
I was after 4 or 5 tries able to play it without any artefacts on older commit b9145fcab27da9e14c6929036d771afd1907a771
comment:4 by , 5 weeks ago
I believe this should be resolved by https://patchwork.ffmpeg.org/project/ffmpeg/patch/20241230175939.9793-2-post@frankplowman.com/. Could you please check on your side?
EDIT: I just decode the stream a couple more times, and the problem is not entirely gone (although it is intermittent and possibly occurs less with the patch applied). I will investigate further.
comment:5 by , 5 weeks ago
| Analyzed by developer: | set |
|---|---|
| Reproduced by developer: | set |
comment:6 by , 5 weeks ago
| Resolution: | → duplicate |
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| Status: | new → closed |
This issue is a duplicate of https://trac.ffmpeg.org/ticket/11325
Sample VVC stream showcasing chroma artefacts upon decoding with ffmpeg