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Decoding Netflix's AV1 Streams

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Re: Decoding Netflix's AV1 Streams

#71

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.

Wow, this entire thread is some direct and very valuable feedback. Thank you to everyone who weighed in. I hear you all loud and clear! To be transparent, I was experimenting with a more "punchy," narrative style to weave in some wit and humor. I didn't want the writing to feel dry and was aiming for a flow that was more entertaining. In retrospect, I clearly overshot the mark and ended up with something that feels i…

wtf, is this comment also AI written? this is peak satire

Re: Decoding Netflix's AV1 Streams

#72
post #71

Earlier quoted context omitted.

Wow, this entire thread is some direct and very valuable feedback. Thank you to everyone who weighed in. I hear you all loud and clear! To be transparent, I was experimenting with a more "punchy," narrative style to weave in some wit and humor. I didn't want the writing to feel dry and was aiming for a flow that was more entertaining. In retrospect, I clearly overshot the mark and ended up with something that feels i…

wtf, is this comment also AI written? this is peak satire

Sorry but don't believe everything is now written by AI. Some people still know how to write addressing feedback and take accountability.

Re: Decoding Netflix's AV1 Streams

#73
post #71

Earlier quoted context omitted.

Wow, this entire thread is some direct and very valuable feedback. Thank you to everyone who weighed in. I hear you all loud and clear! To be transparent, I was experimenting with a more "punchy," narrative style to weave in some wit and humor. I didn't want the writing to feel dry and was aiming for a flow that was more entertaining. In retrospect, I clearly overshot the mark and ended up with something that feels i…

wtf, is this comment also AI written? this is peak satire

probably a PM or TPM

Re: Decoding Netflix's AV1 Streams

#74
post #70

Why is this now flagged ? Perhaps the most important question which I have yet to see anyone pointing out. Those bit rate numbers are appalling! 2-4Mbps average bitrate? For a services you are paying for? I knew Netflix has gotten bad but this is worse than I thought. Even some high end YouTube Content does better than that. It should be 8Mbps minimum. And at this bitrate the difference between H.264 and AV1 wont be…

Wondering about the flag myself

>Those bit rate numbers are appalling! 2-4Mbps average bitrate?

While those may sound low, what I'm thinking is Netflix didn't see any benefit in perceptual quality (or VMAF scores) but sending more bits down the pipe and increasing their bandwidth bill.

Re: Decoding Netflix's AV1 Streams

#75

Looks like latest chatgpt model is not aware of massive battery draining on mobile

This test wasn't done on mobile.

For mobile, I don't know who outside of Netflix is delivering AV1. If they are, I expect them to be leveraging the hardware AV1 decoders for battery life instead of employing a software only solution like dav1d. Saying that, I think Netflix was using dav1d solution where it had a benefit (e.g. low quality cellular networks)

https://netflixtechblog.com/netflix-now-streaming-av1-on-and...

Re: Decoding Netflix's AV1 Streams

#78

Looks like latest chatgpt model is not aware of massive battery draining on mobile

This test wasn't done on mobile. For mobile, I don't know who outside of Netflix is delivering AV1. If they are, I expect them to be leveraging the hardware AV1 decoders for battery life instead of employing a software only solution like dav1d. Saying that, I think Netflix was using dav1d solution where it had a benefit (e.g. low quality cellular networks) https://netflixtechblog.com/netflix-now-streaming-av1-on-and.…

> For mobile, I don't know who outside of Netflix is delivering AV1.

Pretty sure Youtube forces it with dav1d on devices that don’t support hw decoding which is how i became aware of the battery problem

Re: Decoding Netflix's AV1 Streams

#79
post #70

Why is this now flagged ? Perhaps the most important question which I have yet to see anyone pointing out. Those bit rate numbers are appalling! 2-4Mbps average bitrate? For a services you are paying for? I knew Netflix has gotten bad but this is worse than I thought. Even some high end YouTube Content does better than that. It should be 8Mbps minimum. And at this bitrate the difference between H.264 and AV1 wont be…

Wondering about the flag myself >Those bit rate numbers are appalling! 2-4Mbps average bitrate? While those may sound low, what I'm thinking is Netflix didn't see any benefit in perceptual quality (or VMAF scores) but sending more bits down the pipe and increasing their bandwidth bill.

That is the problem. The think VMAF as the gospel, and AV1 is extremely well tuned for it.

VMAF is better than SSIM PSNR but it is still far from perfect. And it is a reason why most torrent are still using HEVC and AVC.

Re: Decoding Netflix's AV1 Streams

#80

Very good read, love some of the humor in this article. It helped me get through to the end!! Also, If anyone was wondering where AV1 stands in comparison to VP8 and VP9... I just looked it up after a few years of not paying attention and I guess Google donated VP8 and VP9 to the alliance for open media foundation (AOMedia) in 2015 and they created AV1 and released it in 2018.

Thank you. Weaving in humor and wit was a conscious choice :) Based on some of the comments above, I might have gone a little overboard. https://news.ycombinator.com/item?id=45446589

No, it was perfect!
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