How to determine key frames in a video for video classification?

How to detect changes between when the changes between 2 frames of videos that are significant enough to be counted for video classification? Thinking of the problem as analogous to edge detection in an image where the change between 2 adjacent pixel is threshold-ed to detect an edge.

Topic image-preprocessing computer-vision classification

Category Data Science

1
answered at

Most video formats should already mark such frames marked as "Key Frames" (Frames 1 in this example).

enter image description here

It is possible to get identifiers of such frames (or split video around such frame). For example, mkvmerge tool.

https://mkvtoolnix.download/doc/mkvmerge.html

http://nickyguides.digital-digest.com/keyframes.htm

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