[FFmpeg-trac] #9994(avformat:closed): ffmpeg 5.1 cli changed how it interprets percent signs in output file urls

[FFmpeg]

#9994: ffmpeg 5.1 cli changed how it interprets percent signs in output file urls
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             Reporter:  mkhl         |                    Owner:  (none)
                 Type:  defect       |                   Status:  closed
             Priority:  important    |                Component:  avformat
              Version:  unspecified  |               Resolution:  wontfix
             Keywords:  image2       |               Blocked By:
  regression                         |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by pukkandan):

 The change is reasonable; but I would like to know how a third party
 program (yt-dlp in this case) can decide which pattern to use without
 blindly assuming that the user will have the latest ffmpeg.

 PS: Considering this change is breaking compatibility, shouldn't it have
 been reserved for a major release?
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Ticket URL: <https://trac.ffmpeg.org/ticket/9994#comment:3>
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