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Dav2d

code.videolan.org

141–150 of 199 posts

Re: Dav2d

#142
post #4

Not on topic, but wow the internet has very quickly devolved into: click -> "making sure you're not a bot", click -> "making sure you're a human", click -> "COOKIES COOKIES COOKIES", click -> "cloudflare something something"

Their bot-detection page took more than 40 seconds to complete on my low-end smartphone. This sucks.

Re: Dav2d

#143

We must not continue to develop media codecs in memory unsafe languages. Small, auditable sections can opt-out perhaps, but choosing default-unsafe for this type of software is close to professional negligence.

Of the 3 software AV1 encoders, the only one that is fully dead is the Rust encoder (rav1e). If people truly wanted memory safe encoders/decoders, they would fund and develop them.

I can totally understand why people would want a memory-safe decoder, but a memory-safe encoder is niche. Finding a memory-safety bug in a decoder is a matter of finding a single unchecked integer field somewhere; finding a memory-safety bug in an encoder requires first finding some sort of logic bug in the encoder and then crafting an adversarial input that survives a number of highly lossy transformations.

Compare the number of CVEs against x264 (included decoders don't count!) and FFmpeg's H.264 decoder.

Re: Dav2d

#145
post #6

[flagged]

By this logic nobody should ever name their child Ted or Theodore because Ted Bundy existed.

You ever meet someone named Adolf? Sometimes names actually are no longer used after a particularly terrible person had that name.

Re: Dav2d

#146

AV2 video codec delivers 30% lower bitrate than AV1, final spec due in late 2025 (videocardz.com) | Oct 2025 | 277 points | 223 comments | https://news.ycombinator.com/item?id=45547537

I care much less about bitrates than about hopefully finally settling on one series of "standards". It looks like H.266 is dead in the water (I haven't even heard of it existing) so we might finally settle on AV2 as "the" new standard, rather than having the infight with half of hard/software only supporting either the state-of-the-art codec from the H26x or the AVx series...

Re: Dav2d

#147
post #131
post #4

Not on topic, but wow the internet has very quickly devolved into: click -> "making sure you're not a bot", click -> "making sure you're a human", click -> "COOKIES COOKIES COOKIES", click -> "cloudflare something something"

AI is a gift that keeps on giving. High hardware prices, locked information sources, plenty of AI slop etc.

Rather people unable to setup a static websites where needed.

I hate that I can't do a curl, or automate my curls to retrieve data from the web because I either see some cloudfrare protection or some captcha.

Information is blocked in walled gardens.

Re: Dav2d

#148
A little extra context:

Dav1d was the surprisingly fast assembly implementation of AV1 decoding. Even for something in hand-coded platform-specific-assembly I think the general impression was that they'd done amazing work to really chase down every last bit of potential performance.

It didn't initially exist when AV1 was first rolled out and its arrival was a step change in powering adoption on devices without hardware decoding.

Dav2d is likely to play a similar role, but it exists from the start of AV2 and can build on the work of dav1d, so should have an even bigger effect.

In a weird reverse chicken and egg scenario, having really good software decode that can be deployed will spur on hardware development and adoption due to network effects.

Re: Dav2d

#149
post #2

Project description: dav2d is the fastest AV2 decoder on all platforms :) Targeted to be small, portable and very fast. If you're out of the loop like me: AV2 is the next-generation video coding specification from the Alliance for Open Media (AOMedia). Building on the foundation of AV1, AV2 is engineered to provide superior compression efficiency, enabling high-quality video delivery at significantly lower bitrates.…

is there already an av2 encoder for ffmpeg?

Re: Dav2d

#150
post #86
post #49

Earlier quoted context omitted.

This is a thinly veiled extortion racket and any competent system would fine them into bankruptcy.

We need a more efficient way to eliminate bullshit patents or bullshit patent infringement claims than "violate them then spend millions on lawyers to fight them in court".

Eliminate software patents.
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