[FFmpeg-trac] #10801(ffmpeg:closed): -map + filter causes two copies of a stream in recent versions

[FFmpeg]

#10801: -map + filter causes two copies of a stream in recent versions
--------------------------------+-----------------------------------
             Reporter:  TomTop  |                    Owner:  (none)
                 Type:  defect  |                   Status:  closed
             Priority:  normal  |                Component:  ffmpeg
              Version:  6.1     |               Resolution:  invalid
             Keywords:          |               Blocked By:
             Blocking:          |  Reproduced by developer:  0
Analyzed by developer:  0       |
--------------------------------+-----------------------------------
Changes (by Gyan):

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

Comment:

 It was the earlier behaviour that was buggy. A stream exiting a complex
 filtergraph has to be included in an output file. Earlier, if such a
 stream was unlabelled, any explicitly mapped stream of the same media type
 would be ignored. That was fixed in 6.0.

 See the chapter on [https://ffmpeg.org//ffmpeg.html#Stream-selection
 Stream selection].

 The correct way to filter a mapped stream is to specify a simple
 filterchain. This is done via `-vf / -filter:v:X` for video and `-af /
 -filter:a:X` for audio where X is the ''output'' stream index of that
 type.
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/10801#comment:2>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker