[FFmpeg-trac] #6472(undetermined:new): Conversion failed! by Too many packets buffered for output stream 0:0. in wmv

[FFmpeg]

#6472: Conversion failed! by Too many packets buffered for output stream 0:0. in
wmv
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             Reporter:  ponpon       |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  unspecified  |  undetermined
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
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Comment (by Cigaes):

 If your change makes the error disappear after the filters but reappears
 within libavfilter, then it is not an enhancement at all, probably the
 opposite. This is exactly what is happening here: the error means that
 frames were accumulating in the muxing buffer after filtering and (dummy)
 encoding, now they are accumulating in buffersink. It seems to work better
 because buffersink does not have a limit, but the frames are still
 accumulating. Even worse, since they are accumulating in libavfilter, they
 are accumulating as real frames, not encoded packets, possibly immensely
 larger.

 It is my belief that the scheduling in libavfilter is now mostly correct
 and that the problem lies after libavfilter.

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Ticket URL: <https://trac.ffmpeg.org/ticket/6472#comment:4>
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