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ffmpeg

How to do filter twice at different time ffmpeg

Am trying to implement overlay twice but at different position and different time Here is what am trying to do: i just duplicate the filter

ffmpeg -t 50 -y -i film.mp4 -stream_loop -1 -i gif.gif -filter_complex "


[1]colorchannelmixer=aa=1,scale=iw*2:-1[a];[0][a]overlay=x='200':y='300':shortest=1:enable='between(t,0,10)';

[1]colorchannelmixer=aa=1,scale=iw*2:-1[b];[0][b]overlay=x='200':y='300':shortest=1:enable='between(t,15,20)'"  

-acodec copy output_task_3.mp4

But only the first overlay is been implemented, the seconds is not!

how to archive this?

Now i wrote a PHP script that dose this filter once each time, and repeat proccess then merge all videos, but this is taking so long.

Solution

  • No need to double filter. You can extend the enable expression.

    enable='between(t,0,10)+between(t,15,20)'