gf wrote:
2016-05-29 10:40 GMT+02:00 Carl Eugen Hoyos <[email protected]>:
gf <fortyman <at> gmx.de> writes:
ffmpeg -f lavfi -i color=d=10 -r 50 -c copy test2.avi
How is this supposed to work / what kind of output do you
expect?
In case this isn't clear: Neither duplicating nor dropping
frames is possible with -codec copy, not even for rawvideo.
(Duplicating and / or dropping is the desired effect of the
output option -r.)
Carl Eugen
Hm, I still don't seem to understand what the -r flag does in this case
then.
why is -i color=d=10:r=50 different from -i color=d=10 -r 50 ?
It's a different r :r=50 is a suboption of color which tells it to
generate 50 fps. the -r 50 is an option that tells ffmpeg you want
the output to be converted to 50 fps by dup/drop - but it doesn't
work with copy.
If you use -r before -i it has a different effect from after, on
normal files = override whatever the input file framerate is.
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