First release of dav1d, the AV1 decoder

pooloo1 wrote: post #3

That typo in the first bullet of the "Release" section is really bothersome to me oddly. Less know ones... less know... know... blah

That's the trouble with spellcheck. It can't tell you that you are using the incorrect real word.

Re: First release of dav1d, the AV1 decoder

#6

Post by thunderbird120 » Wed, Dec 12, 2018, 3:06 AM UTC

maxmcd wrote: post #4

phkahler wrote: post #2

When is this coming to Firefox?

It's available in Firefox Nightly.

The firefox implementation is currently lacking the ASM code optimizations and actually runs worse than the default libaom implementation.

Re: First release of dav1d, the AV1 decoder

#7

Post by clouddrover » Wed, Dec 12, 2018, 3:11 AM UTC

phkahler wrote: post #2

When is this coming to Firefox?

I tried it out in Firefox 65 beta. You can enable dav1d via about:config by setting "media.av1.use-dav1d" to true.

dav1d seems to perform worse than libaom for me on some videos I tried. I have a 2014 MacBook Pro with a 2.2ghz Haswell i7 (i.e. with AVX2).

Firefox using libaom struggles to play YouTube AV1 video at 1080p60 on my system. It gets to a point where it drops too many frames and the video becomes unwatchable. For example:

https://www.youtube.com/watch?v=Fmdb-KmlzD8

I hoped dav1d would perform better than libaom on that particular video at 1080p60, but if anything it performs worse.

I'm not clear if that video is 8-bit or 10-bit color. If it's 10-bit color then that would explain it because dav1d is not optimized for 10-bit video yet.

Re: First release of dav1d, the AV1 decoder

#8

Post by ksec » Wed, Dec 12, 2018, 3:41 AM UTC

I am thinking if H.264 AVC will be like Jpeg, where the worse is actually better. They are ubiquitous, and hardware decode in visually all Smartphone, and seems to be good enough for a lot of cases (non-4K usage).

But it is still nice to see AV1 coming along, especially coming from VLC (dav1d) and Xiph ( rav1e ) .

Re: First release of dav1d, the AV1 decoder

#9

Post by Wowfunhappy » Wed, Dec 12, 2018, 3:49 AM UTC

ksec wrote: post #8

I am thinking if H.264 AVC will be like Jpeg, where the worse is actually better. They are ubiquitous, and hardware decode in visually all Smartphone, and seems to be good enough for a lot of cases (non-4K usage). But it is still nice to see AV1 coming along, especially coming from VLC (dav1d) and Xiph ( rav1e ) .

Agreed, but I'm very curious which codec (h265 or av1) will eventually "win" in the 4K+ and HDR space.

Re: First release of dav1d, the AV1 decoder

#10

Post by winningcontinue » Wed, Dec 12, 2018, 3:50 AM UTC

ksec wrote: post #8

I am thinking if H.264 AVC will be like Jpeg, where the worse is actually better. They are ubiquitous, and hardware decode in visually all Smartphone, and seems to be good enough for a lot of cases (non-4K usage). But it is still nice to see AV1 coming along, especially coming from VLC (dav1d) and Xiph ( rav1e ) .

I believe the compression benefits of AV1 to H.264 are greater than Jpeg to newer versions of image compression. Also, when you're talking about video, the sizes of files are magnitudes greater than images. I believe as long as we achieve backwards compatibility and easy conversion of video files, AV1 will be the future.