Handling reddish, chroma-heavy scenes

[Z2697]

Originally Posted by GeoffreyA

It's a trend with the modern codec. But I was surprised to see recently, with libaom, that if you drop the CRF substantially, say about 10, it preserves heavy grain quite well.

Wouldn't it be much more surprising (in a bad way) if it doesn't?

[GeoffreyA]

Originally Posted by Z2697

Wouldn't it be much more surprising (in a bad way) if it doesn't?

Well, with modern codecs, too much is upside down, so when they do something right, it raises one's eyebrows.

[Z2697]

Originally Posted by GeoffreyA

Well, with modern codecs, too much is upside down, so when they do something right, it raises one's eyebrows.

Which ones you think are categorized as modern, by the way?

[GeoffreyA]

Originally Posted by Sunspark

The chroma algorithm you use in the renderer has a noticeable effect on reds and some other colours. I find some algos makes stuff appear too saturated or punchy.

My personal preference is Mitchell-Netravali. Colours look right and reds are not saturated.

Bicubic 60 also works well, but I like M-N more.

I wonder which is a good default for scaling chroma.

Originally Posted by Z2697

Which ones you think are categorized as modern, by the way?

Post-HEVC: AV1, VVC, and afterwards. To be sure, though, H.264 represents an important point, an era.

Adapting the words of Madam from Blade Runner 2049, "The world is built on a wall. It separates the old codecs from the new." :-)

[microchip8]

Originally Posted by GeoffreyA

Adapting the words of Madam from Blade Runner 2049, "The world is built on a wall. It separates the old codecs from the new." :-)

... tell them there is no wall, and the old codecs beat the new ones!

[GeoffreyA]

Originally Posted by microchip8

... tell them there is no wall, and the old codecs beat the new ones!

The ancients are venerable and mighty!