[FFmpeg-trac] #4869(undetermined:new): Capture with error msg: Application provided invalid, non monotonically increasing

[FFmpeg]

#4869: Capture with error msg: Application provided invalid, non monotonically
increasing
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             Reporter:  MrNice       |                    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 MrNice):

 More tests

 I did 12 tests with the CL

 ./ffmpeg -debug 1 -f v4l2 -ts mono2abs -channel 1 -video_size 720x576
 -pix_fmt yuyv422 -thread_queue_size 512 -i /dev/video0 -c:v ffv1 -level 3
 -g 1 -aspect 4:3 -pix_fmt yuv422p /Store3/Test/t_`date +%Y%m%d_%H%M`.mkv
 -aspect 4:3 -f sdl "Dazzle output"

 I always get the same pattern:
 One first red error message
 Few seconds correct
 Around 60 yellow warning messages
 Few seconds correct, a bit longer than the previous
 A second red error message

 I wrote down:
 1- The value at the end of the first red error message
 Application provided invalid, non monotonically increasing dts to muxer in
 stream 0: xxx >= xxx

 2 & 3- The offset and the pts at the message
 Starting new cluster at offset xxxxxxxx bytes, pts xxxxx
 just after the first yellow warning message
 Past duration 0.xxx too large

 4- The value at the end of the second red error message
 Application provided invalid, non monotonically increasing dts to muxer in
 stream 0: xxx >= xxx


 Test|First error|Too large @bytes|Too large @pts|Second error
 *-|..1 .. |..... 2 .......|.... 3 ...|.. 4
 1 | 192 | 51808270 | 10760 | 570
 2 | 183 | 50130991 | 10400 | 561
 3 | 219 | 56954209 | 11800 | 597
 4 | 192 | 51911648 | 10760 | 570
 5 | 161 | 45894575 | 9520 | 539
 6 | 204 | 54028812 | 11200 | 582
 7 | 213 | 55996679 | 11600 | 591
 8 | 176 | 48726442 | 10080 | 554
 9 | 197 | 52595957 | 10920 | 575
 10| 224 | 58047439 | 12000 | 602
 11| 179 | 19117311 | 10200 | 557
 12| 223 | 58023111 | 12000 | 601


 If you subtract the value of the 1st error to the value of the 2nd error
 you always get 378.
 All the values are proportional and start around the same time.
 This is not a random error but a predictable error => bug.

 Hope this will help

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Ticket URL: <https://trac.ffmpeg.org/ticket/4869#comment:1>
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