[FFmpeg-trac] #8337(avcodec:new): MPEG-4 ALS: Overread 8 when decoding
FFmpeg
trac at avcodec.org
Sat Oct 26 23:57:37 EEST 2019
#8337: MPEG-4 ALS: Overread 8 when decoding
---------------------------------+--------------------------------------
Reporter: rkjnsn | Type: defect
Status: new | Priority: normal
Component: avcodec | Version: git-master
Keywords: als | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
---------------------------------+--------------------------------------
(note: this may be a dupe of #5943, but in my case occurs with a regular
16-bit stereo file.)
Summary of the bug:
File encoded using the mp4alsRM23 reference encoder decodes properly using
the reference decoder, but results in the following error when decoding
with FFmpeg:
{{{
[als @ 0x555cf2fb15c0] Overread 8
}}}
How to reproduce:
{{{
% ffmpeg -i mpeg4-als-overread-8.mp4 -f hash -
ffmpeg version N-95568-g1054752c56
built with gcc 8.3.0 (Gentoo 8.3.0-r1 p1.1)
}}}
Expected output:
{{{
SHA256=db0ab7107554cf6f2ea372ec523dd7e906b0f6f00b2c9b4998c8f5f4a1cf8e1f
}}}
Actual output:
{{{
[als @ 0x555cf2fb15c0] Overread 8
[als @ 0x555cf2fb15c0] Reading frame data failed. Skipping RA unit.
[out_0_0 @ 0x555cf2fffe80] EOF on sink link out_0_0:default.
SHA256=3b12b6e81c46f3a123f2f7a4239bccb591b0d1268ed457f5156cc1c2406ff672
}}}
Attached are the log from the above command (decode.log) and the output of
`ffmpeg -v 9 -loglevel 99 -i mpeg4-als-overread-8.mp4` (verbose.log). I'll
be uploading mpeg4-als-overread-8.mp4 to upload.ffmpeg.org shortly.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/8337>
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