Opened 10 days ago
Last modified 9 days ago
#11205 new defect
ac4 decoder output with wrong channel mapping and missing channel 9-16 by remapping to 1-8
| Reported by: | digitpan | Owned by: | |
|---|---|---|---|
| Priority: | normal | Component: | undetermined |
| Version: | unspecified | Keywords: | |
| Cc: | Blocked By: | ||
| Blocking: | Reproduced by developer: | no | |
| Analyzed by developer: | no |
Description
Summary of the bug: AC4 demux error
How to reproduce:
% ffmpeg -i 9.1.6.m2ts -vn -ac 16 -map 0:a:1 output.wav ffmpeg version 2024-05-23-git-ece95dc3dc-full_build-www.gyan.dev built on ...
Patches should be submitted to the ffmpeg-devel mailing list and not this bug tracker.
Change History (4)
comment:1 by , 10 days ago
comment:3 by , 10 days ago
Replying to Balling:
ac4 is incomplete, that is why Paul never merged it
but the decoded sound tracks are correct, just output miss-placed.
comment:4 by , 9 days ago
| Summary: | ac4 decoder output with wrong channel mapping and missing channel 9-16 and remapped to 1-8 → ac4 decoder output with wrong channel mapping and missing channel 9-16 by remapping to 1-8 |
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I tried many ways but the same result, compared with dolby reference decoder and dolby reference decoder is correct for sure.
all high channels were remapped to low 1-8 channels, I think this is a small bug, or tell me how to track it and I might solve the problem.