Comment by juliobbv
1 day ago
It saddens me to see discourse on the internet about AV1's ancestry being focused on Google's VPx line of contributions, while diminishing those coming from Daala (entropy coder...) and Thor (QMs...), as well as inter-company collaborations (CDEF).
A redeeming outcome is that with AVIF's new image tuning modes (both in libaom and SVT-AV1), Gianni and I managed to utilize as many AV1 coding tools as possible, including QMs that sorely needed a well-deserved spotlight.
Also, thanks for paving the way to the current state of multimedia compression! I'm a longtime fan of Xiph(ophorus) since the 1.0 beta/RC Vorbis days. We used your image sets a lot during our testing.
You're welcome. That is what those image sets were for.
I was really happy Thomas Davies added quantization matrices to the spec, because if he hadn't, I would have had to. Fortunately, he did a good job. I am glad someone is finally using them. Don't sleep on per-segment quantizer deltas, either.