[FFmpeg-trac] #3071(avfilter:new): Encoding of files from FMS emits many errors and never ends

[FFmpeg]

#3071: Encoding of files from FMS emits many errors and never ends
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             Reporter:  yotam       |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avfilter
              Version:  git-master  |               Resolution:
             Keywords:              |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
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Comment (by yotam):

 Replying to [comment:5 cehoyos]:
 > Replying to [comment:4 yotam]:
 > > However, when the video codec is replaced as well (mpeg4 instead of
 libx264), the original symptoms partially go away (the error appears only
 once and the operation completes rather than hanging) but instead the
 following warning message appears repeatedly during processing:
 > >
 > > [Parsed_overlay_0 @ 00000000042ee340] [framesync @ 000000000257b6c8]
 Buffer queue overflow, dropping.
 >
 > I suspect (complete, uncut console output missing) that you have to use
 a constant quantiser (or a high bitrate), for example {{{-qscale 5}}}

 constant quantizer failed to change the behavior, as did using a high
 bitrate. The full console output for the modified command (replacing the
 video codec) is attached as 2.log

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/3071#comment:6>
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