[FFmpeg-trac] #9816(avcodec:new): Ffmpeg 4.4.x play 24bit ape file with big noise.

FFmpeg trac at avcodec.org
Thu Jun 23 09:54:36 EEST 2022


#9816: Ffmpeg 4.4.x play 24bit ape file with big noise.
-------------------------------------+-------------------------------------
             Reporter:  Song ziming  |                    Owner:  (none)
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:  avcodec
              Version:  4.4.1        |               Resolution:
             Keywords:  24bit ape    |               Blocked By:
  noise                              |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Changes (by Song ziming):

 * keywords:   => 24bit ape noise


Old description:

> Summary of the bug:
>
> Ffmpeg 4.4.x play 24bit ape with big noise when using ffplay or compiled
> so.
>
> If simplely revert this commit it works
> fine:​https://patchwork.ffmpeg.org/project/ffmpeg/patch/20201006001714.19577-1-onemda@gmail.com/
>
> I have tried to dicuss with the author, he will not fix this problem
> because he want to do other things without coding.
>
> It also works fine in old versions like 4.3.x or other older version.
>
> How to reproduce:
> {{{
> % ffplay "24bit ape file"
> ffmpeg version built on 4.4.x
> }}}

New description:

 Summary of the bug:

 Ffmpeg 4.4.x play 24bit ape with big noise when using ffplay or compiled
 so.

 If simplely revert this commit it works
 fine:​https://patchwork.ffmpeg.org/project/ffmpeg/patch/20201006001714.19577-1-onemda@gmail.com/

 I have tried to dicuss with the author, he will not fix this problem
 because he want to do other things without coding.

 It also works fine in old versions like 4.3.x or other older version.

 How to reproduce:
 {{{
 % ffplay APE_48K_24bit_2CH_02_01.ape​
 ffmpeg version built on 4.4.x
 }}}

 Other 24bit ape songs have same problem.

--
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/9816#comment:1>
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