Hacker News Board Hacker News, browsed like a classic message board
Live data from Hacker News

Decoding Netflix's AV1 Streams

singhkays.com

Post reply on HN
Print view View original

11–20 of 80 posts

Re: Decoding Netflix's AV1 Streams

#11

Post by bashtoni »

jpalawaga wrote: post #4

I feel like this was copy edited by ChatGPT and it really grates me. I couldn’t help but lose focus after I started seeing telltale signs of AI. While the topic matter is interesting, I feel like obviously synthetic content falls into the “that which was not worth writing, is not worth reading either” trap. If the authors tone is extremely ChatGPT-esque, I apologize in advance.

Came to say pretty much the same thing. This slop is unreadable for me at this point.

I keep getting a paragraph or two into something, read one of the terrible "It's not just word - it's massive hyperbole!" sentences, see that there are several more in subsequent paragraphs and can't continue.

However bad the author's original writing that generate this output was, it can't be as awful as this.

Re: Decoding Netflix's AV1 Streams

#12

Post by binaryturtle »

jpalawaga wrote: post #4

I feel like this was copy edited by ChatGPT and it really grates me. I couldn’t help but lose focus after I started seeing telltale signs of AI. While the topic matter is interesting, I feel like obviously synthetic content falls into the “that which was not worth writing, is not worth reading either” trap. If the authors tone is extremely ChatGPT-esque, I apologize in advance.

I agree that this text in its current style is very hard to read. Feels like the text was ballooned up to 3 or 4 times its original length with pointless "side content"? Lots of distracting noise basically. AI or not AI, this is not very good.

… and so I'll continue to stick with AVC, thanks! :-)

Re: Decoding Netflix's AV1 Streams

#14

Post by galaxy_gas »

jpalawaga wrote: post #4

I feel like this was copy edited by ChatGPT and it really grates me. I couldn’t help but lose focus after I started seeing telltale signs of AI. While the topic matter is interesting, I feel like obviously synthetic content falls into the “that which was not worth writing, is not worth reading either” trap. If the authors tone is extremely ChatGPT-esque, I apologize in advance.

I would 100000% rather read the author's own writing even if English is their 10th language

Rather than this inflated slop that look like I am trying to reach word count in a paper and one sentence becomes 15 useless ones

Edit: This is not so much commentary on AI than it is the core of your post is a few tables. Just post the tables and one or two sentence of conclusion and that is all ! It is so tedious to read through dozens of paragraph of autogenerated unnecessary nonsense -- that contribute nothing of value to the data

Re: Decoding Netflix's AV1 Streams

#15

Post by CharlesW »

alfalfasprout wrote: post #3
CharlesW wrote: post #2

Fascinating, thank you for this analysis! Currently pining for release of an updated Apple TV, which will have an SoC capable of hardware AV1 decode. It'd be great to hear from someone at Netflix about the unexpected Bojack Horseman results. I'd bet that Netflix just isn't yet taking advantage of AV1 features designed especially for this kind of animation and synthetic content.

What benefit would a new appleTV have other than reduced bandwidth usage?

The credible rumors beyond AV1 decode include: Wi-Fi 7 via Apple's home-grown N1 chip, a CPU fast enough to support the next-gen Siri release on-device, a RAM bump, improved pass-through for high-end audio formats, potentially a camera (the new square selfie sensor would be perfect for this) for easier group/family FaceTiming, and more aggressive pricing.

Re: Decoding Netflix's AV1 Streams

#16

Post by z0r »

jpalawaga wrote: post #4

I feel like this was copy edited by ChatGPT and it really grates me. I couldn’t help but lose focus after I started seeing telltale signs of AI. While the topic matter is interesting, I feel like obviously synthetic content falls into the “that which was not worth writing, is not worth reading either” trap. If the authors tone is extremely ChatGPT-esque, I apologize in advance.

This didn't trip my AI detector; I instinctively skimmed to look at the numbers and conclusions. Your comment made me go back up to the top and read the opening paragraphs and I see what you are saying. It is always painful to realize you are reading AI product. I think it is less of a problem with this blog post because it is just presenting a handful of tables of numbers and a few graphs, but it seems I am already unconsciously training myself to ignore florid AI writing.

Re: Decoding Netflix's AV1 Streams

#17

Post by encom »

Okay, so AV1 has lower bitrate. I can encode any video format at arbitrary bitrates, but that metric is not useful on its own. An article about how AV1 requires less bits for the same or improved perceptual quality would have been far more interesting.

Re: Decoding Netflix's AV1 Streams

#18

Post by shmerl »

> Device Support: Hardware decoding for AV1 isn’t on every device yet.

By now - it should be in most devices that's aren't outdated by even average standards. And it's worth mentioning that for devices that don't have hardware decoding, dav1d does an excellent job of decoding it on the CPU.

The problem is more with hardware encoding. That's indeed only present in only recent generations (or a couple) of hardware and even with that, AMD for example have an aspect ratio limitation bug in their AV1 hardware encoder (which requires adding black bands to work around) that's only fixed in RDNA 4 which is not available in their APUs, so it won't be fixed in APUs until their UDNA is used for them (they didn't fix it in RDNA 3.5 chips).

Re: Decoding Netflix's AV1 Streams

#19

Post by re »

galaxy_gas wrote: post #14
jpalawaga wrote: post #4

I feel like this was copy edited by ChatGPT and it really grates me. I couldn’t help but lose focus after I started seeing telltale signs of AI. While the topic matter is interesting, I feel like obviously synthetic content falls into the “that which was not worth writing, is not worth reading either” trap. If the authors tone is extremely ChatGPT-esque, I apologize in advance.

I would 100000% rather read the author's own writing even if English is their 10th language Rather than this inflated slop that look like I am trying to reach word count in a paper and one sentence becomes 15 useless ones Edit: This is not so much commentary on AI than it is the core of your post is a few tables. Just post the tables and one or two sentence of conclusion and that is all ! It is so tedious to read thr…

It's unfortunate because there's plenty of good, technical, perfectly readable content in the author's blog archive from 2021 and earlier without the overwrought purple prose.

https://singhkays.com/archives/

Re: Decoding Netflix's AV1 Streams

#20

Post by zamadatix »

alfalfasprout wrote: post #3
CharlesW wrote: post #2

Fascinating, thank you for this analysis! Currently pining for release of an updated Apple TV, which will have an SoC capable of hardware AV1 decode. It'd be great to hear from someone at Netflix about the unexpected Bojack Horseman results. I'd bet that Netflix just isn't yet taking advantage of AV1 features designed especially for this kind of animation and synthetic content.

What benefit would a new appleTV have other than reduced bandwidth usage?

I wouldn't mind if they enabled the 120 Hz support with the new chipset. I like my TV but the framerate matching feature causes a few seconds of black screen each time I switch between and also drops the UI to 24 FPS. Would be nice if everything just ran at 120 FPS all the time, and since 24/30/60 are perfect frame multiples that's nice to. NTSTC content at 23.976 I'd hope the player would just speed up at that point, but even if not... judder at 120 Hz is better than at 60 Hz.

Also 6 GHz Wi-Fi would be nice. I had to run a cable to my 2 because the 5 GHz airspace where I am is too crowded to stream high quality movies via Infuse without occasional hitching. Same with the seek speed. Meanwhile my iPhone gets 2.9 Gbps of goodput at solid jitter on 6 GHz Wi-Fi.

There's probably some updates to the HDR standards. For me at least though the current one already supports what my TV does.

Also apps seem to assume "because hardware decode isn't available don't serve AV1" sometimes. As silly as that is with the CPU power in the AppleTV, at least that problem would go away with hardware support and they'd stop trying to serve a "compatible" SDR h.264 stream. Despite internet pessimism, sometimes the quality is also raised with more efficient codecs rather than just "the same quality at less bandwidth".

Post reply on HN