On 05-05-2020 03:16 am, vectronic wrote:
On 4 May 2020, at 17:56, Gyan Doshi <ffm...@gyani.pro> wrote:
On 04-05-2020 09:54 pm, vectronic wrote:
I needed to encode to mov/mp4 with a timebase of 1/600 and the output was not
as expected.
What was the unexpected output?
You can use video_track_timescale to set any custom scale.
Gyan
The unexpected output is that if you request a timebase of 600 as an argument
for ffmpeg on the command line, the output timebase is forced to be greater
than 10000.
As far as I can see there is no documentation or message logged that the
following logic is applied which means the output differs to what a user has
requested and expects:
while(track->timescale < 10000)
track->timescale *= 2;
I believe video_track_timescale applies to all tracks - so you unable to
specify timescales per track?
I believe your flag also disables the scale clamping for all video
tracks. In that case, better to extend the min value of
video_track_timescale to -1 to implement this instead of a new flag.
Gyan
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