[FFmpeg-trac] #10807(undetermined:new): FFmpeg doesn't get quant parameter from input files for deblocking filters

[FFmpeg]

#10807: FFmpeg doesn't get quant parameter from input files for deblocking filters
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             Reporter:  Lirk         |                    Owner:  (none)
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  git-master   |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Description changed by Lirk:

Old description:

> This problem appeared in version 4.4 (09.04.2021) and the last
> precompiled version without this problem was 4.3.2 (21.02.2021). For
> example, with using pp7 filter without specifying the quant parameter,
> result will be "green screen", other deblocking filters just have no any
> effect on the output video, this problem affects all deblocking filters.
>
> {{{
> % ffmpeg -i file.avi/mpg -vf pp7 green_screen.mp4
> ffplay version 2024-01-14-git-34a47b97de-full_build-www.gyan.dev
> Copyright (c) 2003-2024 the FFmpeg developers
> }}}

New description:

 This problem appeared in version 4.4 (09.04.2021) and the last precompiled
 version without this problem was 4.3.2 (21.02.2021). For example, with
 using pp7 filter without specifying the quant parameter, result will be
 "green screen", other deblocking filters just have no any effect on the
 output video, this problem affects all deblocking filters.

 {{{
 % ffmpeg -i file.avi/mpg -vf pp7 green_screen.mp4
 ffmpeg version 2024-01-14-git-34a47b97de-full_build-www.gyan.dev Copyright
 (c) 2003-2024 the FFmpeg developers
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/10807#comment:1>
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