So, now you ask, how do you know which frames are keyframes? But this article goes inside the process used in Kanye's video in good detail:Īn algorithmic approach might be to analyze an MP4 videostream for cuts (where the difference between 2 frames is relatively large), then cut out the surrounding frames. However, by removing the keyframe it's assumptions are now "wrong" and you get the lovely effect. ![]() ![]() Once the keyframes are gone, there's no reference for the codec, so it just goes along and does what codecs do, which is recalculate the image based on assumptions. As i understand it, it's a matter of removing the frames that serve as keyframes.
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