[FFmpeg-trac] #11577(undetermined:new): Incorrect parsing of metadata stream specifiers with a question mark

[FFmpeg]

#11577: Incorrect parsing of metadata stream specifiers with a question mark
-------------------------------------+-------------------------------------
             Reporter:  Mislav       |                     Type:  defect
  Milinković                         |
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:  7.1
  undetermined                       |
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:
 When specifying a stream with metadata stream specifiers that include a
 `?` at the end, an error is raised `Stream map '' matches no streams.` No
 error is raised when removing the `?`. This issue does not present itself
 when using normal stream speficiers like `-map 0:s?`. This issue is also
 not present in ffmpeg 7.0

 How to reproduce:
 Get a video file with tracks containing language metadata and try to use a
 metadata stream specifier with a `?` eg. `-map 0:s:m:language:eng?`
 {{{
 % ffmpeg -i input.mkv -map 0:V -map 0:s:m:language:eng? ... output.mkv
 }}}
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/11577>
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