[FFmpeg-trac] #10351(ffmpeg:new): OGG Vorbis Metadata Removal not working

[FFmpeg]

#10351: OGG Vorbis Metadata Removal not working
-------------------------------------+-------------------------------------
             Reporter:  Dušan        |                    Owner:  (none)
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:  ffmpeg
              Version:  6.0          |               Resolution:
             Keywords:  libvorbis    |               Blocked By:
  METADATA metadata                  |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Description changed by Dušan:

Old description:

> Summary of the bug:
>
> How to reproduce:
> {{{
> % ffmpeg -i test.ogg -y -map_metadata -1 -c copy out.ogg
> }}}
>

> Tested on v6.0 static and ffmpeg version 4.4.2-0ubuntu0.22.04.1 built
> with gcc 11 (Ubuntu 11.2.0-19ubuntu1)
>
> None of them works. Metadata keys are present even after strip.

New description:

 Summary of the bug:

 How to reproduce:
 {{{
 % ffmpeg -i test.ogg -y -map_metadata -1 -c copy out.ogg
 }}}

 Output:
 {{{
 Input #0, ogg, from 'audio_1.ogg':
   Duration: 00:00:10.06, start: 0.000000, bitrate: 31 kb/s
   Stream #0:0: Data: none
   Stream #0:1: Audio: vorbis, 44100 Hz, stereo, fltp, 256 kb/s
     Metadata:
       TITLE           : 500 hz sinus tone
       ARTIST          : Stephan
       ENCODER         : ffmpeg2theora-0.29
       SOURCE_OSHASH   : defa25183667dde3
 }}}


 Tested on v6.0 static and ffmpeg version 4.4.2-0ubuntu0.22.04.1 built with
 gcc 11 (Ubuntu 11.2.0-19ubuntu1)

 None of them works. Metadata keys are present even after strip.

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Ticket URL: <https://trac.ffmpeg.org/ticket/10351#comment:2>
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