[FFmpeg-trac] #10995(undetermined:new): MP3 stream not copied *losslessly* with `-c:a copy`
FFmpeg
trac at avcodec.org
Sat May 4 16:19:15 EEST 2024
#10995: MP3 stream not copied *losslessly* with `-c:a copy`
-------------------------------------+-------------------------------------
Reporter: | Type: defect
TheBigBadBoy |
Status: new | Priority: normal
Component: | Version: 6.1.1
undetermined |
Keywords: MP3 | Blocked By:
lossless copy |
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Summary of the bug: When copying MP3 streams to a new file, the MP3 stream
in the decoded new file does not match the input one (streamhash).
How to reproduce:
{{{
% ffmpeg -i stripped.mp3 -c:a copy out.mp3
% ffmpeg -v warning -i stripped.mp3 -f streamhash -
0,a,SHA256=ab1e0a0724ec4fae47c483073550723c74ad29bf6b79a93fc0861c0603ffdec4
% ffmpeg -v warning -i out.mp3 -f streamhash -
0,a,SHA256=7deac27714db19d69767c196b3d2a728e2c5dc3291351f117e5cf01b952ff16b
ffmpeg version n6.1.1 Copyright (c) 2000-2023 the FFmpeg developers
built with gcc 13.2.1 (GCC) 20230801
}}}
Patches should be submitted to the ffmpeg-devel mailing list and not this
bug tracker.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/10995>
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