[FFmpeg-trac] #6959(undetermined:new): Concat images only makes 3 frames with -filter_complex
FFmpeg
trac at avcodec.org
Thu Jan 11 15:06:13 EET 2018
#6959: Concat images only makes 3 frames with -filter_complex
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Reporter: mattaias | Owner:
Type: defect | Status: new
Priority: normal | Component:
Version: unspecified | undetermined
Keywords: concat | Resolution:
Blocking: | Blocked By:
Analyzed by developer: 0 | Reproduced by developer: 0
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Comment (by cehoyos):
Replying to [comment:2 mattaias]:
> {{{
> frame= 3 fps=0.0 q=-1.0 Lsize= 346kB time=00:00:00.00
bitrate=46489311.5kbits/s dup=0 drop=8 speed=0.000115x
> }}}
This line tells you that your suspicion - that the concat filter ignores
inputs above a certain threshold - is not true for your input: All 11
frames came out of the filter chain, 8 had to be dropped because of the
low output frame rate. To verify, you can set a higher framerate for the
output file to avoid the dropped frames.
My guess is that you expect every input frame to have a duration of 0.5
seconds. Apart from the console output that already tells you that the
duration of the input frames is very short: Why do you think so?
Or do I misunderstand and you do not expect the input frames to have a
longer duration?
If I am right, `setpts` as last filter may result in the desired output
file, see the documentation for usage examples.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/6959#comment:3>
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