Am 01.10.2020 um 16:57 schrieb Cristian Secară:
I want to make a short .mp4 clip filmed in 1080p/60 format, then change somehow
the playing fame rate to 30Hz so that the playing speed becomes twice slower.
Audio is not important (may be dropped completely).
As far as I know (?), a "simple" frame rate change will try to preserve the
playing speed, so when changing from 60Hz to 30Hz, it will drop half of the movie.
At the same time, a "simple" slow motion processing will try to keep the
original frame rate, so in this case it will interpolate the transitions or something,
while keeping the frame rate still at 60Hz.
What options are available for preserving all frames "as is" and just slowing
down the playing speed ?
It's described here:
https://trac.ffmpeg.org/wiki/How%20to%20speed%20up%20/%20slow%20down%20a%20video
Michael
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