I use this FFmpeg command to compare 2 videos:
ffmpeg -i video1.mp4 -i video2.mp4 -filter_complex "[0:v][1:v]blend=difference,blackframe=1:10" -f null -'
The command compares the same frame in each video.
I want to compare different frames from each video. For example, start at frame 0 of video1 but frame 5 of video2.
I tried to use the following command, but it simply started the compare of both videos at frame 5:
'ffmpeg -i video1.mp4 -i video2.mp4 -filter_complex "[0:v]select=gte(n\,0)[video1]; [1:v]select=gte(n\,5)[video2]; [video1][video2]blend=difference,blackframe=1:10" -f null -'
Is what I'm trying to do possible with Ffmpeg?
Note that I tried other approaches that didn't work:
Comparing images generated from frames (create image from a frame, compare, go to next frame) but that was extremely time consuming and impractical for long clips.
Cutting and reencoding is also not an option due to the loss of quality and time required.
