Codec Speed vs Size Tests

[Selur]

Upscaling bit depth and chroma sampling increases file size a lot.

Naturally.

By the way, as it was noticed earlier - standalone filter for Hybrid that allow to change bit depth and chroma sampling may be useful option.

Not happening.

Cineform "Visually Lossless" is extremely fast and size vs quality may be adjusted in very large limits.

It's lossy and it's size is worse than lossless FFV1.

ProRes 422HQ 10-bit is "Visually Lossless" but same time 1.8-1.9 less in size than x264 "Real Lossless" 422 10-bit

Yes, if you throw away data you get smaller files. The main shame here is that it's way slower than other "Visually Lossless" and even "lossless" formats, only good point I see is that it's supported by most NLEs.
Other than that it seeems like the worst choice.

Cu Selur