[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):

 The bug is still reproducible with the following command, which replaces
 vo_aacenc with the built-in aac codec and simplifies the video processing:

 ffmpeg -filter_complex "[0:v][1:v]overlay='6:379'" -filter_complex
 "[1:a][0:a]amerge" -y -i never_ending_encoding_input1.mp4 -i
 never_ending_encoding_input2.mp4 -c:v libx264 -x264opts "level=3.1" -c:a
 aac -strict -2 -report -movflags faststart 2.mp4

 However, when the video codec is replaced as well, the original symptoms
 go away and instead the following warning message appears repeatedly
 during processing:

 [Parsed_overlay_0 @ 00000000042ee340] [framesync @ 000000000257b6c8]
 Buffer queue overflow, dropping.

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/3071#comment:4>
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