[FFmpeg-trac] #10997(undetermined:closed): Stream map '0:a' matches no streams

[FFmpeg]

#10997: Stream map '0:a' matches no streams
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             Reporter:  bitworld58   |                    Owner:  (none)
                 Type:  defect       |                   Status:  closed
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  unspecified  |               Resolution:  invalid
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by bitworld58):

 File from an IP camera with video and sound, video can be extracted, but
 audio is not detected
 This player plays with sound: https://www.polyvision.ru/po/dlya-
 windows/pleer-h.264
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Ticket URL: <https://trac.ffmpeg.org/ticket/10997#comment:4>
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