Am 03.09.2021 um 15:09 schrieb Paul B Mahol:
On Fri, Sep 3, 2021 at 3:07 PM Michael Koch <astroelectro...@t-online.de>
wrote:
Am 03.09.2021 um 14:21 schrieb Michael Koch:
I have two video streams and want to toggle between them in 1 second
intervals. I did try this command:
ffmpeg -i in1.mp4 -i in2.mp4 -lavfi streamselect=map='mod(t,2)' -t 30
out.mp4
This doesn't work because streamselect doesn't accept expressions.
Who has an idea for a workaround?
Found a workaround myself:
blend=all_expr='if(lt(mod(T,2),1),A,B)'
Slow, doesnt it supports commands?
In this case I didn't want to use commands because I wanted it to toggle
for a very long (or infinite) time. It would be nice if streamselect
accepts expressions.
Michael
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