[FFmpeg-trac] #8590(undetermined:closed): 'telecine=pattern' error for p24, soft telecined sources
FFmpeg
trac at avcodec.org
Tue Mar 31 18:40:46 EEST 2020
#8590: 'telecine=pattern' error for p24, soft telecined sources
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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 |
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Comment (by markfilipak):
Thanks for having some discussion.
Well, Richard, you can see it for yourself.
ffmpeg -i IN.M2TS -vf "telecine=pattern=5555,bwdif=mode=send_frame"
-avoid_negative_ts 1 -c:v libx265 -crf 20 -preset medium -c:a copy -c:s
copy OUT.MKV
It works wonderfully for BD content, but not soft-telecined DVD content
due to the error in 'telecine'.
With 2-3-2-3 pull-down, 2 of 5 frames are combed and the combed frames
adjoin.
With 5-5-5-5 pull-down, 2 of 10 frames are combed but the combed frames
are separated by 4 progressive frames.
In other words, there's no noticable judder and decombing is not needed
due to the 1/60th second duration of the combed frame.
In other words, 'telecine' works as advertised for BDs, but not for DVDs.
Now, why would that be, eh?
--
Ticket URL: <https://trac.ffmpeg.org/ticket/8590#comment:8>
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