Live data from Hacker News

Dav2d

jbkempf.com

11–20 of 212 posts

Re: Dav2d

#13
post #10

Earlier quoted context omitted.

How does that prove anything? They're claiming that there are patents, but that doesn't mean there are.

Dolby is only the most recent case, Sisvel consorsium actually bills licences per device: Consumer Display Device: EUR 0.32 Consumer Non-Display Device: EUR 0.11 (source here: https://www.sisvel.com/licensing-programmes/audio-and-video-... )

That doesn’t prove their claims are valid.

I can claim the same and offer licenses per device.

Re: Dav2d

#14
post #10

Earlier quoted context omitted.

How does that prove anything? They're claiming that there are patents, but that doesn't mean there are.

Dolby is only the most recent case, Sisvel consorsium actually bills licences per device: Consumer Display Device: EUR 0.32 Consumer Non-Display Device: EUR 0.11 (source here: https://www.sisvel.com/licensing-programmes/audio-and-video-... )

How does how they bill for their product, matter in terms of if their lawsuit holds merit?

Re: Dav2d

#15

... improvements around 25% compared to AV1 AV2 decoding is roughly five times more complex than AV1 decoding I'm not sure what these two lines mean or if we can compare them, any help?

> I'm not sure what these two lines mean or if we can compare them, any help?

AV2 saves 25% bandwidth at the cost of 5x more decoding complexity.

Re: Dav2d

#16
post #7

Sorry if this sounds naive, but does it make sense to write a codec library in C/ASM considering how well Rust is progressing, especially when, as the author puts it, AV2 decoding is roughly five times more complex than AV1 decoding ?

Because it's 5 times more complex, you need to get the maximum performance available. Therefore more ASM than ever.

Rust does not bring more performance. Just more safety.

Re: Dav2d

#17
post #7

Sorry if this sounds naive, but does it make sense to write a codec library in C/ASM considering how well Rust is progressing, especially when, as the author puts it, AV2 decoding is roughly five times more complex than AV1 decoding ?

Go ask FFmpeg what they're writing their encoders and decoders in.

Re: Dav2d

#18

... improvements around 25% compared to AV1 AV2 decoding is roughly five times more complex than AV1 decoding I'm not sure what these two lines mean or if we can compare them, any help?

I understood it as compression is 25% better : a quality of 10mbps in av1 can be achieved with 8mbps in Av2. But, it needs 5 times more compute power for this 25% gain.

Re: Dav2d

#19
post #5

'AV2 decoding is roughly five times more complex than AV1 decoding. In practice, that means software running on today’s hardware will struggle to decode AV2 in real time without careful, architecture-specific optimization' AV1 software decoding is already very intensive so AV2 decoding benchmarks are the next thing that would be really interesting (or mortifying) to see.

> AV1 software decoding is already very intensive so AV2 decoding benchmarks are the next thing that would be really interesting (or mortifying) to see.

Yes, this is going to be fun to watch.

Re: Dav2d

#20
post #2

[flagged]

Every single AV2 news here in the last week has seen exactly the same question.

Either go back read the answers there first, or I will assume you are part of a FUD campaign (yes, I know HN guidelines, but again every single AV2 news in the last week has seen the same rhetorical "questions" as top "comments").

Post reply on HN