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My first technical writing regarding the new AV1 codec is up at Xiph.Org. We've been working on AV1, heads-down, for a long time and my writing took a hiatus for almost that entire period. Now that it's out, it's time to continue the technology pages that I started with Daala.

"AV1 is a new general-purpose video codec developed by the Alliance for Open Media. The alliance began development of this new codec using Google's VPX codecs, Cisco's Thor codec, and Mozilla's/Xiph.Org's Daala codec as starting point. AV1 leapfrogs the performance of VP9 and HEVC, making it a next-next-generation codec. The AV1 format is and will always be royalty-free with a permissive FOSS license."

Date: 2018-05-05 10:19 am (UTC)
From: [personal profile] mzso
Since they take up so much space were there no attempts on dumping I-frames?
It seems to me that any compression improvement that can be gained from using information from following frames would help somewhat at least. (Completely abandoning it probably a lot more)

PS:
It's only possible to comment with a dreamwidth account now because the captcha is broken.
Edited Date: 2018-05-05 10:19 am (UTC)

Date: 2018-05-05 09:48 pm (UTC)
From: [personal profile] mzso
How so?
I remember you mentioning experimenting with GOP-s that didn't have an I-frame.

I guess information to be referenced needs to be encoded somewhere, but is having the first frame fully encoded without using any information from others ideal for compression?

What happens when there's a scene cut in the middle of a GOP?

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