TIL: JPEG XS - an image and video codec that offers both visually and mathematically lossless quality for low latency implementations.
Additionally, JPEG XS compressed content is indistinguishable from the original uncompressed content.
Additionally, JPEG XS compressed content is indistinguishable from the original uncompressed content.
It is patent-encumbered though, you have to pay license fees to deploy it.
A lot of our customers are moving their grading systems into data centres and streaming the images over IP back to their grading suites.
I've got it down to less than 1 frame for encode-transport-decode, but you've still got to copy the image to an SDI card and wait for that to clock out.
But for some reason you can't make use of that and have to burn bandwidth instead.
https://www.obe.tv/how-to-lie-about-latency/
Bandwidth is cheap -- basically free, especially at this bitrate.
It's not that you should have gotten a magical 10ms latency glass to glass, it's that you should have been able to get 4 frames latency on h.264. But something prevented that, so I'm sad about it.
(And if you say the bandwidth was fine in your situation I won't argue, but using more than a gigabit extra is not usually thought of as free.)
It can be indistinguishable, as long as you stick with lossless or very low compression ratios. It falls apart at typical JPEG XL compression ratios.