Hello, I have two videos that I would like to combine side-by-side using the overlay filter. The two videos are both h264 @60fps and capture the same event from different angles. I would like to get frame-exact syncing of the videos but because the I-frames do not line up, it seems the videos cannot be clipped or started with frame-exact precision. I have tried the following without success: ffmpeg -i clip_01_Bow.mp4 \ -acodec copy \ -vcodec libx264 -preset slow -crf 20 -threads 0 \ -vf "[in] setpts=PTS-STARTPTS,transpose=1,scale=404:720,pad=1280:720:0:0 [b1] ; movie=clip_01_Mast.mp4:seek_point=0.66 [m1]; [m1] setpts=PTS-STARTPTS,crop=876:720:150:0 [m2];[b1][m2] overlay=404:0 [out]" \ test.mp4 How can I go about shifting the overlayed (or input) video in time by 2 or 3 frames? Thanks, Riley