[FFmpeg-trac] #8590(undetermined:closed): 'telecine=pattern' error for p24, soft telecined sources

FFmpeg trac at avcodec.org
Thu Apr 2 05:26:35 EEST 2020


#8590: 'telecine=pattern' error for p24, soft telecined sources
-------------------------------------+-------------------------------------
             Reporter:  markfilipak  |                    Owner:
                 Type:  defect       |                   Status:  closed
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  unspecified  |               Resolution:  invalid
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by markfilipak):

 May I point out some features of 5-5-5-5 pull-down v. 2-3-2-3 pull-down?

 Even at 60 FPS, 2-3-2-3 pull-down (actually, it becomes 4-6-4-6 pull-down)
 has +/- 5% cadence @ 12Hz, and 40% combing @ 6Hz.

 5-5-5-5 pull-down has no cadence and combing is 20% @ 12Hz. 12Hz is
 generally considered to be below the temporal limit of perception.
 Therefore, the combing can be uncompensated.

 My actual testing confirms this.

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Ticket URL: <https://trac.ffmpeg.org/ticket/8590#comment:20>
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