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fftools/ffmpeg: rework -enc_time_base handling

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Read the timebase from FrameData rather than the input stream. This
should fix #10393 and generally be more reliable.

Replace the use of '-1' to indicate demuxing timebase with the string
'demux'. Also allow to request filter timebase with
'-enc_time_base filter'.
This commit is contained in:
Anton Khirnov 2023-07-07 11:31:53 +02:00
parent 4d06742b93
commit dff3a283cd
5 changed files with 44 additions and 18 deletions
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7
doc/ffmpeg.texi
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@ -1812,10 +1812,11 @@ Assign a default value according to the media type.
For video - use 1/framerate, for audio - use 1/samplerate.
@item -1
Use the input stream timebase when possible.
@item demux
Use the timebase from the demuxer.
If an input stream is not available, the default timebase will be used.
@item filter
Use the timebase from the filtergraph.
@item >0
Use the provided number as the timebase.