[FFmpeg-trac] #11248(ffmpeg:open): mapping of optional streams selected by language broken

[FFmpeg]

#11248: mapping of optional streams selected by language broken
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             Reporter:  Jakob       |                    Owner:  elenril
                 Type:  defect      |                   Status:  open
             Priority:  normal      |                Component:  ffmpeg
              Version:  git-master  |               Resolution:
             Keywords:  map         |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  1           |
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Changes (by elenril):

 * analyzed:  0 => 1
 * owner:  (none) => elenril
 * status:  new => open

Comment:

 This was a semi-intentional recent change in stream specifier handling
 (semi- because I forgot to document this aspect of it) that was necessary
 because previous syntax was ambiguous - there was no way to tell whether
 the '?' is a part of the metadata value or the optional-map marker.

 Leaving the bug open until the documentation is fixed.
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/11248#comment:2>
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