[FFmpeg-trac] #4690(undetermined:new): Windows - Transcoding raw video to mjpeg+matroska: CPU usage increases over time

[FFmpeg]

#4690: Windows - Transcoding raw video to mjpeg+matroska: CPU usage increases over
time
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             Reporter:               |                    Owner:
  MariusSchipper                     |                   Status:  new
                 Type:  defect       |                Component:
             Priority:  normal       |  undetermined
              Version:  unspecified  |               Resolution:
             Keywords:  mjpeg        |               Blocked By:
  matroska CPU                       |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
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Comment (by MariusSchipper):

 I ran four tests in total over 12h:
 - mjpeg video coder + matroska muxer: CPU usage increases
 - mjpeg video coder + mjpeg muxer: CPU usage does NOT increase
 - mjpeg video coder + avi muxer: CPU usage does NOT increase
 - mpeg1 video coder + mpeg1 muxer: CPU usage does NOT increase

 => Problem is related to matroska usage:
 - Isn't the matroska format suitable for streaming?
 - What exactly causes the additional work to do?
 - Is this a bug or a property of the matroska muxer?

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Ticket URL: <https://trac.ffmpeg.org/ticket/4690#comment:3>
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