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Is there any known way of differentiating between frames of real footage and animated content? It seems like there's probably range of colors more likely to appear in a histogram for real footage, or maybe a level of color variation more likely to be in animation.

The case I'm looking at is converting GIF images to h264, so there's a max of 256 colors to work with. I'm mostly trying to figure out when I should use the animation profile so the output is screwed up as little as possible in the transcode.

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It's a studied problem. Here are some relevant papers:

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