VideoLAN Publishes Dav2d For Open-Source AV2 Decoder
(www.phoronix.com)
Open SourceI just need AV2 to not blow chunks on VR/Streaming.
AV1 is currently hamstrung by decode compute costs, I'm sending 6K video @ 120 FPS and at 200 Mbits (25 MB/s) it looks like pea soup.
At 400-500 Mbps (62.5 MB/s), you have twice as much network overhead but somehow H.264 still decodes faster even though it's twice as much raw data per second.
For straight up video file compression, AV1 seems to be absolutely unmatched if you use "peak framerate" (say 120) and then VFQ / variable quality set to like 35.
I was able to convert a 900 MB (!!) H264 video of VR gameplay (6K across, 3K/eye!) into 96 MB, and slide right under Discord's idiotic 100 MB limit.
Having tried AV1, I found that it was worse than h265 for what I use it for: high quality movie encodes.
It doesn't preserve grain well, and if struggles with maintaining quality in low light scenes.
On top of all of this it tends to be more CPU intensive than h265.
For this testing, I used Handbrakes CPU encoder.
I realise that this is maybe not what AV1 is intended for. It's probably best suited to making low bitrate streams more tolerable. Maybe AV2 will be better 🤷
interesting, when reading this article a while back, it sounded like av1 was pretty good at preserving grain, the best even.
am wondering whether it comes down to the settings used.
I use VBR and adjust the quality slider until I cannot see artifacts. I don't do anything particularly special and maybe there's more that could be done.
I once heard of an approach where you remove all grain and reapply it live to reduce the bitrate. That sounds interesting but denoising usually results in quality loss and it will likely look pretty artificial. My tooling also does not support it, so I've not bothered.
If someone can recommend me a good encoder or tool I can try that is better than whatever comes with handbrake I'm happy to give it a go.
yooo, this is so amazing!!
Can't wait to tryout AV2, I'm not sure there's an usable encoder yet but I am real excited!
FOSS & royalty free for the win 🔥
(I sound like an AI bot but I'm really just excited 🥲)
I mean, unless you've got a hardware accelerator (which won't be a thing before multiple years from AV2's release, and possibly more due to its complexity), it will be measurably much worse than current codecs.
So what makes av2 better than av1
AV2 vs AV1: What the Next-Gen Video Codec Brings to the Table
Or older article but more comprehensive : AV1 vs AV2 Video Codec: 7 Key Differences You Need to Know. It's key takeaways :
AV2 delivers 30% better compression efficiency than AV1, which already compresses 30% better than HEVC (H.265).
AV2 encoding demands 2-3 times more computational power than AV1, requiring advanced hardware like RTX 5090 for practical use.
AV2 will officially release by end of 2025, with widespread hardware support expected around 2027 or later.
AV2 introduces advanced features like split-screen delivery, enhanced AR/VR support, and dynamic bitrate switching for adaptive streaming.
88% of AOMedia members plan to implement AV2 within two years, despite infrastructure and hardware compatibility challenges.
Ah but split screen delivery may mean plex content on an Apple Vision Pro or something VR related right?
So AV2 in a homelab is grossly inappropriate as this seems like something more geared up for server farm status. Odds are most homelabs aren’t rocking that kinda hardware and there’s probably an energy consumption cost and hardware cost factor to measure against how much someone is really saving compared to just AV1 which a intel ARC card can handle. You’d probably have to be rocking a homelab with 100s of TB of stuff to even come close to maybe wanting to go to AV2 hardware and codec?
AV2, a generation leap in open video coding and the answer to the world’s growing streaming demands, delivers significantly better compression performance than AV1. AV2 provides enhanced support for AR/VR applications, split-screen delivery of multiple programs, improved handling of screen content, and an ability to operate over a wider visual quality range. AV2 marks a milestone on the path to an open, innovative future of media experiences.
https://aomedia.org/press%20releases/AOMedia-Announces-Year-End-Launch-of-Next-Generation-Video-Codec-AV2-on-10th-Anniversary/
How do you know you're not an LLM? Can you prove it?
Ask them how many Rs are in strawberry.
Solipsism FTW.
