[FFmpeg-trac] #9500(undetermined:new): HEVC encoder settings are not set

[FFmpeg]

#9500: HEVC encoder settings are not set
-------------------------------------+-------------------------------------
             Reporter:  zboubida     |                    Owner:  (none)
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  git-master   |               Resolution:
             Keywords:  encoder      |               Blocked By:
  settings                           |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Description changed by zboubida:

Old description:

> Summary of the bug:
> Using a git build on both Linux and Windows (N-59465-g4f8494fe5a-static),
> when encoding a HEVC video to HEVC, the encoder settings are not set in
> the encoded file (instead, the original values are copied).
> Release 4.4.1 does not exhibit this behaviour.
>
> How to reproduce:
> The test.mkv video is HEVC encoded with preset=slow and crf=18. out.mkv
> will use preset fast and crf=22.
> (Using mediainfo here to display the encoder settings)
> {{{
> % ffmpeg -i test.mkv -c:v libx265 -preset fast -x265-params crf=22
> out.mkv
> [ffmpeg output attached]
> % mediainfo --Output='Video;%Encoded_Library_Settings%' test.mkv
> >test.txt
> % mediainfo --Output='Video;%Encoded_Library_Settings%' out.mkv >out.txt
> % diff test.txt out.txt && echo $?
> 0
> % mediainfo --Output='Video;%Encoded_Library_Settings%' out.mkv | grep
> -Eo 'crf=[0-9]+'
> crf=18
> }}}
>
> Same happens in 10bit HEVC. When transcoding from AVC to HEVC, it seems
> that the encoder settings are added properly.

New description:

 Summary of the bug:
 Using a git build on both Linux and Windows (N-59465-g4f8494fe5a-static),
 when encoding a HEVC video to HEVC, the encoder settings are not set in
 the encoded file (instead, the original values are copied).
 Release 4.4.1 does not exhibit this behaviour.

 How to reproduce:
 The test.mkv video is HEVC encoded with preset=slow and crf=18. out.mkv
 will use preset fast and crf=22.
 (Using mediainfo here to display the encoder settings)
 {{{
 % ffmpeg -i test.mkv -c:v libx265 -preset fast -x265-params crf=22 out.mkv
 ffmpeg version N-59465-g4f8494fe5a-static
 https://johnvansickle.com/ffmpeg/ Copyright (c) 2000-2021 the FFmpeg
 developers
 [ffmpeg output attached]
 % mediainfo --Output='Video;%Encoded_Library_Settings%' test.mkv >test.txt
 % mediainfo --Output='Video;%Encoded_Library_Settings%' out.mkv >out.txt
 % diff test.txt out.txt && echo $?
 0
 % mediainfo --Output='Video;%Encoded_Library_Settings%' out.mkv | grep -Eo
 'crf=[0-9]+'
 crf=18
 }}}

 Same happens in 10bit HEVC. When transcoding from AVC to HEVC, it seems
 that the encoder settings are added properly.

--
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Ticket URL: <https://trac.ffmpeg.org/ticket/9500#comment:1>
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