[FFmpeg-trac] #4146(ffmpeg:new): zoompan progress stops after 2 sec when it is overlayed
FFmpeg
trac at avcodec.org
Mon Dec 1 15:59:45 CET 2014
#4146: zoompan progress stops after 2 sec when it is overlayed
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Reporter: hgerard | Owner:
Type: defect | Status: new
Priority: normal | Component: ffmpeg
Version: unspecified | Resolution:
Keywords: zoompan | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by Cigaes):
The input of your zoompan filter has a frame every 1/25 second, but the
zoompan filter will duplicate each one 250, making it 10 seconds long.
Thus:
in: t=0.00 → out: t∈[0.00, 10.00[
in: t=0.04 → out: t∈[0.04, 10.04[
in: t=0.08 → out: t∈[0.08, 10.08[
...
The output segments overlap instead of being monotonic. You need to either
set the input frame rate to make them monotonic or completely override the
output timestamps.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/4146#comment:1>
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