[FFmpeg-trac] #10855(undetermined:new): Huge RTSP latency achieved over long time of streaming from specific IP camera

[FFmpeg]

#10855: Huge RTSP latency achieved over long time of streaming from specific IP
camera
-------------------------------------+-------------------------------------
             Reporter:  VincasD      |                    Owner:  (none)
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  6.1          |               Resolution:
             Keywords:  RTSP H264    |               Blocked By:
  latency                            |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Comment (by VincasD):

 I've attached `default_vs_sync_ext.png` - it seems that using `-sync ext`
 (on the right) is even worse in a sense that it shows about ~2s latency
 just from the start, without even waiting for hours for latency to grow.

 Anyway, so hypothesis is that this IP camera module provides some sort of
 wrong timing information that potentially produces growing latency?

 Again, this does not reproduce with other IP camera modules, nor with
 Live555 implementations (and mpv) with same "problematic" camera.
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Ticket URL: <https://trac.ffmpeg.org/ticket/10855#comment:6>
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