> > On 7 Aug 2024, at 11:04, Phil Rhodes via ffmpeg-user > > <ffmpeg-user@ffmpeg.org> wrote: > > > > Might this be achieved simply by detecting the differences between adjacent > > frames? > > <int> > Sleeping cat > Cut to: > Plant on windowsill > Bouke
Heh. Interesting thought. Question is- how do you detect differences? As Bouke and inhahe point out, a minor change in angle or a scene change will show up as a huge change, though I think the latter is less of a problem: a change of scene will result in let's say for sake of argument 100% change between frames- but if the change is averaged out over 1 second or 5 seconds it's going to be pretty minimal compared to a busy scene with more or less each frame changing. I had a thought about handling minor camera changes which would result in (seemingly) all pixels changing, which was to sort all the pixels in a frame and then compare -- ordering a frame's pixels is a pretty nonsensical thing to do in almost every other context -- as a scene with a slight translation of camera view will have very similar pixels overall. The 'check bitrate over time' is probably the simplest, and the cheapest computationally- I'd love another approach for CBR videos which would also be IO bound. Cheers, Rob _______________________________________________ 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".
