[FFmpeg-trac] #9649(undetermined:closed): filter_complex drops per-stream metadata

[FFmpeg]

#9649: filter_complex drops per-stream metadata
-------------------------------------+-------------------------------------
             Reporter:  Arnon        |                    Owner:  (none)
                 Type:  defect       |                   Status:  closed
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  4.4.1        |               Resolution:  invalid
             Keywords:               |               Blocked By:
  filter_complex metadata            |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Changes (by Nicolas George):

 * status:  new => closed
 * resolution:   => invalid

Comment:

 The point of `-filter_complex` is that there is no 1:1 map between input
 and output. Therefore there is no map to decide which metadata to copy.
 Therefore, not copying metadata unless explicitly specified is the
 expected behavior.
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Ticket URL: <https://trac.ffmpeg.org/ticket/9649#comment:1>
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