Am 24.04.2020 um 21:56 schrieb Edward Park:
Hi,
How can this be done with FFmpeg? Do you have an example? I know how commands /
sendcmd works. The opacity could be toggled, or the streamselect filter could
be used. But where does the switching signal come from, while FFmpeg is running?
The specific messaging protocol/method would depend on a variety of factors
including personal preference, but to parrot an example given in the manual
using zmq,
% ffmpeg -i INPUT -filter_complex
'null[main];movie=INPUT2,zmq,lumakey@toggle=tolerance=1,[main]overlay,realtime'
OUTPUT
and sending commands to the named lumakey filter would mimic toggling between
the two streams if they were the same size and position.
i.e. using the zmqsend example program,
% zmqsend <<<"lumakey@toggle tolerance 0"
That works only under Linux, right? It seems libzmq is not enabled in
the FFmpeg build for Windows from Zeranoe.
Michael
_______________________________________________
ffmpeg-user mailing list
ffmpeg-user@ffmpeg.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-user
To unsubscribe, visit link above, or email
ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
