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Originally Posted by Dark Shikari;1310980[b
What does it actually do?[/b]
It tracks the propagation of information from future blocks to past blocks across motion vectors. It could be described as localizing qcomp to act on individual blocks instead of whole scenes. Thus instead of lowering quality in high-complexity scenes (like x264 currently does), it'll only lower quality on the complex part of the scene, while for example a static background will remain high-quality. It also has many other more subtle effects, some potentially negative, most probably not.
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Cool. When you had me check out that Touhou clip a while ago, I figured something like this would be what was required. Have you tried it with this build?
The only decent looking encode of that I ever got was using PEP and ROI encoding, specifying a max QP for the static parts of the image so that the crazy motion parts wouldn't starve the background of bits and drive up their QP so high. Once encoded at a decent QP on the I-frame, they would be pretty much skip blocks the rest of the GOP and so didn't take up material bandwidth anyway.
Cool to see something that could achieve similar results without manual ROI and with moving images.