Show HN: Media Compression that actually means something

http://cramcore.github.io/index.html

by ceraes • 12 years ago

7 10 12 years ago

cramcore.github.io

ceraes5• 12 years ago

Hey, Hacker News! Let's talk about video compression! With the Ycombinator winter application date bearing down on us, Cramtec has announced a new experimental beta build of the state-of-the-art media compressor named Cram. Cram is able to significantly reduce (by more than 20%) the size of audio, video, and images losslessly without the need to re-encode or convert. Cram offers companies a drop in binary with the ability to significantly reduce overhead and bandwidth for Data Distribution, Online Backup, and Media Streaming. Head on over to the beta's github site (cramcore.github.io), click the Resources tab, and grab yourself a copy of the beta binary to beat up on! We plan to add a C version, multithreading, and powerful GPGPU computation in the weeks and months to come. We can use everyone's feedback!

jsaxton862• 12 years ago

Cram makes an extraordinary claim: "Cram is a state-of-the-art media compressor that is able to significantly reduce (by more than 20%) the size of audio, video, and images losslessly without the need to re-encode or convert."

Decades of research have gone into media compression algorithms, and they claim to get a 20% improvement for free. I'm skeptical.

I don't run OSX, so I can't try out their binary, which they're distributing via email only. I challenge the Cram team to losslessly reduce the size of "The Simpsons Movie – 1080p Trailer" by 20%, available here: http://www.h264info.com/clips.html

ceraes5• 12 years ago

Hello jsaxton86, we love challenges! So we'll be starting here in a few moments and post the results when we're done. Also, I'm sorry to hear you can't try if for yourself, but we wanted to point out the compressor is readily available from our site, it's only the decompressor we've been asked to hold back at the request of an expert. We wanted to share our primary concern with you. Simply put: Piracy.

We hope to be accepted into ycombinator for our innovation. In, as you rightly pointed out, over coming 40 years of research to find answers that make us proud to say we're the first.

Piracy of digital media is not something we cannot condone as a company. We therefore have withheld our decompressor for that reason, and we'll still need people to test it which is why we've requested they ask via email. That way we can know, who has it and who does not. This helps us prevent our system from being used for questionable, if not illegal, means.

We understand your skepticism and we hope to prove it to you with our results of your test. We're very thankful their are people like you who will give us the chance to prove ourselves and we hope you'll follow us and keep us to our word, because that is what we believe makes innovators honest.

We'll have: Size of file to compress, size of "Crammed" file, file size ratio, time to compress, memory usage during compression, and machine model & config info posted for your trailer test soon!

ceraes5• 12 years ago

jsaxton86's Test Result's: Input File: Title: The Simpsons Movie - 1080p Trailer.mp4 Kind: MPEG-4 movie Size: 147,399,359 bytes (147.4 MB on disk) Video Dimensions: 1920 x 800 Codecs: H.264, AAC Duration: 02:17 Audio Channels: 6 Output Cram: Title: The Simpsons Movie - 1080p Trailer.mp4.cram Kind: Document Size: 113,620,340 bytes (113.6 MB on disk) Time to Cram File: Seconds: 3313.306152 (55 Minutes ~13.3 Seconds) Memory Usage: GB (Rounded): 24.67 GB Hardware Overview: Model Name: iMac Model Identifier: iMac11,1 Processor Name: Intel Core i7 Processor Speed: 2.8 GHz Number of Processors: 1 Total Number of Cores: 4 L2 Cache (per Core): 256 KB L3 Cache: 8 MB Memory: 16 GB Processor Interconnect Speed: 4.8 GT/s Boot ROM Version: IM111.0034.B02 SMC Version (system): 1.54f36

We're really proud to try our best on your test jsaxton86, and we know that test results from the person showing you something always come with a healthy pinch of salt. So we'll ask the community to give it a try, and back us up here. Scientific testing means repeatable parameters, so we urge others to take his test too. (--EDIT: Turns out this file is too big 50MB in the limit of Github push-- We're also making our Cram file available on github, check it out with the decompressor or in a Hex editor: https://github.com/Cramcore/Crams)

From these results you can clearly see areas we aren't happy with either. Time and memory, but this is just the beginning for us, we developed this system because 4 decades of research hadn't yielded these results. Then we sat down and threw out the book. With some notes on the research of Marcus Hutter (http://prize.hutter1.net/) and Matt Mahoney (http://mattmahoney.net/) plus the input of wonderful mentors and mathematical genius like Brad Feld (http://www.feld.com/) we started code for the Cram project over 3 years and research another 2 before that. We're very grateful for the opportunity we have now.

We encourage everyone to try if for themselves, request the decompressor and try it too. But let humanity never believe that innovation is impossible. In 1966, the idea of a flip open communicator was science fiction, today we have not only communicators in our pockets, but whole computers. At Cramtec we hope our work can help move humanity to the next set of great technologies.

chewxy• 12 years ago

And your weissman score is?

(yes I know that's a fictional thing.. I'm just surprised nobody's brought up Pied Piper yet)

ceraes5• 12 years ago

Hahaha thanks for joining us chewxy. Funny story, when that show hit screens in April I was very much interested in seeing it, but after the first episode it became Cramtec's worst nightmare. Here's a fictional group of people doing the same thing we've been trying to do for years, and suddenly we're competing for mindshare versus something that doesn't have to create real world results.

Although, we're up against such a thing we like to laugh it off. Because at the end of the day we have what we believe to be a very wonderful invention, that could change the world.

If you're truly interested in the Weissman Score, I'm glad to crack open my calculator and tally it up, but it won't be anything like their score. Time and memory are factors, if I remember right. And we're looking to improve those numbers.

Have you gotten to give it a try chewxy? We'd love some independent results reported. jsaxton86 had a wonderful test and offered many more files which we'll start testing tomorrow.

Show HN: Media Compression that actually means something

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