Hi. Paul. Sorry for the late reply since it verified just now that working with '-loop 1 -i input_png' right in front filter_complex param by your reminder. Thanks.
Have a nice rest of the day, Paul. 2024년 6월 7일 (금) 오후 12:54, Lee Mitchell <npdmail...@gmail.com>님이 작성: > Hi. > > What I know is alpha change for another video clip pon base video like as > "-filter_complex > "[1:v]geq=r='r(X,Y)':a='if(between(t,0,9),alpha(X,Y)*(T/9),0)'[alpha];" > which works very well as time goes by. > > But it is not working for a PNG image file as time goes by. It only sets > alpha when the overlay starts which does not change while playing. > How to change PNG alpha by base video clip's time? > Could you guys advise me or hint me on keywords? > > Thank you in advance. > _______________________________________________ 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".
