[FFmpeg-trac] #6971(undetermined:new): ffmpeg drops frames after deinterlacing
FFmpeg
trac at avcodec.org
Tue Nov 13 17:42:19 EET 2018
#6971: ffmpeg drops frames after deinterlacing
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Reporter: CaryKnoop | Owner:
Type: defect | Status: new
Priority: normal | Component:
Version: git-master | undetermined
Keywords: cuvid | Resolution:
Blocking: | Blocked By:
Analyzed by developer: 0 | Reproduced by developer: 0
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Comment (by malakudi):
After further testing, -r 50 on input works fine if input is a correct
encoded file, starting from keyframe etc etc. If input is a live stream
(http or udp multicast), even if it starts at keyframe, with -r 50 as
input any input error will immediately result in audio/video sync error.
-r 50 on input completely breaks the audio/video sync mechanism on input
(I guess because it kind of breaks timestamps). So it is not a good
solution, it works for some workloads (file transcoding) but not for live
transcoding. -r 50 on output works fine on 3.3.8. How can I help to make
-r 50 on output work again? Any hint to look at the code?
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Ticket URL: <https://trac.ffmpeg.org/ticket/6971#comment:14>
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