I want to evolve the values of the rgbashift command over time with a sine wave. I started with the following code :
ffmpeg -loop 1 -i picture.jpg -vf "rgbashift=rh=20*sin(PI*2*t/5):bh=-20*sin(PI*2*t/5)" -pix_fmt yuv420p -t 5 output.mp4 which returns an error. I checked the documentation using the command -h filter=rgbashift, and it seems that T is allowed as a value through the "enable" option. So, I modified the code: ffmpeg -loop 1 -i participant1.jpg -vf "rgbashift=rh='20*sin(PI*2*t/5)':bh='-20*sin(PI*2*t/5)',enable='between(t,0,5)'" -pix_fmt yuv420p -t 5 output.mp4 But I still encounter an error. Is it possible to have T in the rh and bh value parameters to smoothly animate the shift (from what I understand from the documentation, it seems possible)? Or is it just to make the effect appear at certain moments of the timeline like here: ffmpeg -loop 1 -i picture.jpg -vf "rgbashift=rh=20:bh=-20:enable='between(t,1,3)+between(t,4,4.5)+between(t,8,9)',random" -pix_fmt yuv420p -t 5 outputrgb.mp4 _______________________________________________ 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".
