On 2/14/2021 5:54 PM, Mark Filipak (ffmpeg) wrote:
On 02/14/2021 08:44 PM, Paul B Mahol wrote:
See source code of telecine filter. ...
I can't read 'C'.
You really ought to learn, it's not that hard to _read_ although the context
and the data names matter a lot. And there are details that may not be so
easy to express in text which then just look like the code.
... It is doing all calculations avoiding
floats.
But formula in floats are pretty trivial and straightforward to write.
Then my request should be easy for you. What is the formula?
Some of these aren't mere a = b + c formulae, they have decision points in
the calculation which aren't readily expressed in algebra.
You'll see things like this (from vf_telecine.c/filter_frame)
frame->pts = (
(s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time) +
av_rescale(outlink->frame_count_in, s->ts_unit.num, s->ts_unit.den);
then you need to know what av_rescale does (libavutils/mathematics.c).
Later,
z!
_______________________________________________
ffmpeg-user mailing list
[email protected]
https://ffmpeg.org/mailman/listinfo/ffmpeg-user
To unsubscribe, visit link above, or email
[email protected] with subject "unsubscribe".
