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Extreme video compression with prediction using pre-trainded diffusion models

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Re: Extreme video compression with prediction using pre-trainded diffusion models

#61
post #60
post #6

Extreme compression will be when you put in a movie and get a SORA prompt back that regenerates something close enough to the movie.

The compression competitions include the decompression program size in the size of the output. Must be a large series of movies compressed to win, then.

If one model can "compress"/"decompress" all movies and series, its fraction of the size becomes negligible, but yes I agree with you since it still has to be distributed.

Re: Extreme video compression with prediction using pre-trainded diffusion models

#62

Earlier quoted context omitted.

Many older/commercial video codecs optimized for PSNR, which results in the output being blurry and textureless because that's the best way to minimize rate for the same PSNR. Even with that, showing H.265 having lower PSNR than H.264 is odd --- it's the former which has often looked blurrier to me.

at equal bitrate?

At equal bitrate H.265 typically is considered twice as efficient as H.264. The graphs look all wrong to me - they show "ours" at a lower PNSR compared to both H.264 and H.265.

Re: Extreme video compression with prediction using pre-trainded diffusion models

#63
post #19

Ahhh, Sloot's digital coding system [1] is finally here ;). [1] https://en.m.wikipedia.org/wiki/Sloot_Digital_Coding_System

In the [Sloot Digital Coding System], it is claimed that no movies are stored, only basic building blocks of movies, such as colours and sounds. So, when a number is presented to the SDCS, it uses the number to fetch colours and sounds, and constructs a movie out of them. Any movie. No two different movies can have the same number, otherwise they would be the same movie. Every possible movie gets its own unique numbe…

You just need an index and length within Pi's digits, duh.

Re: Extreme video compression with prediction using pre-trainded diffusion models

#64
post #29

Earlier quoted context omitted.

How big is the SORA model itself?

You only need one copy of it - even if it is 100GB. If it's baked into every OS... and storage / RAM keeps getting cheaper... just might work.

Meh, AI doesn't break information theory. The relationship between the prompt size to the "similarity" of the result will be such that it doesn't beat traditional compression techniques.

At best we might consider it a new type of lossy (or... replacey?) compression. Of course if storage / RAM / bandwidth keeps increasing, this is quite likely the least energy efficient technique available.

Re: Extreme video compression with prediction using pre-trainded diffusion models

#65
post #56
post #21

Earlier quoted context omitted.

Where’s that quote? Something like “AI is just compression, and compression is indistinguishable from AI”

> AI is just compression, and compression is indistinguishable from AI Almost. Compression and AI both revolve around information processing, but their core objectives diverge. Compression is focused on efficient representation, while AI is built for flexibility and the ability to navigate the unpredictable aspects of real-world data. Compression learns a representation from the same data it encodes, like "testing on…

lets say AI is not-so-smart JPEG which has more parts missing, and there is more guesswork when producing restoration.

compression is most of the times about finding the minimal grammar that unfolds to the same original material.

interestingly Fabrice Bellard somehow found a way to use transformers for compression without loss, and beats xz by significant margin. https://bellard.org/nncp/nncp_v2.1.pdf. it uses "deterministic mode of PyTorch" to make sure both directions work alike which I guess means - it saves the random toss throughout compression, for the decompression to use. note: this paper is still on my to-read list.

Re: Extreme video compression with prediction using pre-trainded diffusion models

#66
post #64

Earlier quoted context omitted.

You only need one copy of it - even if it is 100GB. If it's baked into every OS... and storage / RAM keeps getting cheaper... just might work.

Meh, AI doesn't break information theory. The relationship between the prompt size to the "similarity" of the result will be such that it doesn't beat traditional compression techniques. At best we might consider it a new type of lossy (or... replacey?) compression. Of course if storage / RAM / bandwidth keeps increasing, this is quite likely the least energy efficient technique available.

If the compression can take into account the sub-manifold of potential outputs that people would actually be interested in watching a movie about it can achieve enormously higher compression than if it doesn't know about this.

Re: Extreme video compression with prediction using pre-trainded diffusion models

#67
post #28

Earlier quoted context omitted.

“Alexa show me Star Wars but with Dustin Hoffman as Luke”.

I actually would really like this flexibility. "Star Wars, but in Korean with k-pop stars cast", etc.

I've invited friends over to watch Harry Potter and the Deathly Weapons (a.k.a. Harry Potter with Guns) in its entirety and it was entertaining.

https://harrypotterwithguns.com/

trailer: https://www.youtube.com/watch?v=xA-ayM5I4Jw

Re: Extreme video compression with prediction using pre-trainded diffusion models

#68
post #21
post #6

Extreme compression will be when you put in a movie and get a SORA prompt back that regenerates something close enough to the movie.

Where’s that quote? Something like “AI is just compression, and compression is indistinguishable from AI”

How does that make sense? Compression is deterministic (for same prompt, same output is algorithmically guaranteed). AI is only deterministic in corner cases.

Re: Extreme video compression with prediction using pre-trainded diffusion models

#69
post #28

Earlier quoted context omitted.

“Alexa show me Star Wars but with Dustin Hoffman as Luke”.

I actually would really like this flexibility. "Star Wars, but in Korean with k-pop stars cast", etc.

The most fun thinking is combining this with that Apple Vision and further steps in that tech tree

Gonna be able to skip holodeck episodes in real life soon

Re: Extreme video compression with prediction using pre-trainded diffusion models

#70
post #68
post #21

Earlier quoted context omitted.

Where’s that quote? Something like “AI is just compression, and compression is indistinguishable from AI”

How does that make sense? Compression is deterministic (for same prompt, same output is algorithmically guaranteed). AI is only deterministic in corner cases.

AI is always deterministic. We add noise to the models to get "non-deterministic" results, but if the noise and input is the same, the output is also the same.
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