[FFmpeg-trac] #8626(undetermined:new): pp=linblenddeint failure

[FFmpeg]

#8626: pp=linblenddeint failure
-------------------------------------+-------------------------------------
             Reporter:  markfilipak  |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:

 In Windows 1803

 This:
 ffmpeg -i IN -filter_complex
 "telecine=pattern=5,split[A][B],[A]select='not(eq(mod((n+1)\\,5)\\,3))'[C],[B]select='eq(mod((n+1)\\,5)\\,3)'[D],[C][D]interleave"
 OUT
 succeeds.

 But this:
 ffmpeg -i IN -filter_complex
 "telecine=pattern=5,split[A][B],[A]select='not(eq(mod((n+1)\\,5)\\,3))'[C],[B]select='eq(mod((n+1)\\,5)\\,3)',pp=linblenddeint[D],[C][D]interleave"
 OUT
 fails.

 Due to the delayed nature of the failure, I wonder whether its cause might
 be the same as 'https://trac.ffmpeg.org/ticket/8612'.

 Without pp=linblenddeint:
 CPU utilization is steady between 85% & 95%. Output is about 13 GB.
 Playback: Normal.

 With pp=linblenddeint:
 CPU utilization is erratic, generally below 35%, sometimes below 10%.
 Output is about 1 GB.
 Playback: Total time is not correct. It begins at zero and advances,
 keeping just ahead of running time. Video freezes when total time reaches
 19:01.

 I have tested this with 2 M2TS files and 2 VOB files.

 Thank you for making ffmpeg. Thank you for maintaining ffmpeg.


 How to reproduce:
 {{{
 ffmpeg -i IN -filter_complex
 "telecine=pattern=5,split[A][B],[A]select='not(eq(mod((n+1)\\,5)\\,3))'[C],[B]select='eq(mod((n+1)\\,5)\\,3)',pp=linblenddeint[D],[C][D]interleave"
 OUT

 ffmpeg version git-2020-04-20-cacdac8
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/8626>
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