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30th July 2015, 19:30 | #21 | Link |
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High quality at extremely low bitrates. They were showing SD at a few hundred kbps, and 720p at 500 kbps, both looking very good. Of course it's one thing to show a demo of carefully selected and compressed content, and a completely different thing to demonstrate it consistently in the field... But even if their codec Perseus is half as good as they claim, it'd still be a strong competitor to HEVC and VP9. Here are their claims: http://www.studiodaily.com/2015/04/v...nt-h-264-hevc/
And if their codec really is as good as they claim... Wow, that would completely blow HEVC/VP9 out of the water. I won't believe it though until somebody unbiased has had a chance to play with an actual Perseus encoder. |
2nd August 2015, 21:06 | #22 | Link | |||
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Not sure they made relatively clear this is not something like a full blown codec but builds into existing codecs actually MPEG
http://forum.doom9.org/showpost.php?p=1730162 Quote:
Something that gathers specific Signal information and sends it to the decoder for reconstruction Core Signal surely means the Main Bitstream and then something somewhere saved in some layer (either bitstream or on Container level) that is read by their Adapted Decoder for reconstruction. here they get a little bit more specific Quote:
Quote:
So Recording the Noise saving statistical data about it Denoising and when needed for the input reconstructing it on the Decoder Side voila Perseus Or voila FGM And using Quantization Analysis @ the Decoding Input stage Input->Cleaning Process and Noise Recording based on Input Quantization Data->Dithering->Saving of statistical Noise Data->Sending->Reconstructing if needed by the Decoder Maybe the Denoising and Reconstructing is GPU accelerated thus why they have a GPU Expert on board Found the Figure So pretty much what some do since years here with their inputs except the Noise reconstruction from statistical recorded data gathered @ the Denoising stage What Thomson actually proposed with FGM for H.264
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all my compares are riddles so please try to decipher them yourselves :) It is about Time Join the Revolution NOW before it is to Late ! http://forum.doom9.org/showthread.php?t=168004 Last edited by CruNcher; 2nd August 2015 at 22:43. |
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3rd October 2015, 12:58 | #23 | Link |
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all my compares are riddles so please try to decipher them yourselves :) It is about Time Join the Revolution NOW before it is to Late ! http://forum.doom9.org/showthread.php?t=168004 Last edited by CruNcher; 3rd October 2015 at 14:08. |
3rd October 2015, 22:08 | #25 | Link |
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Surely EyeIO doesn't have filed so many patents about improving MPEG parts upto H.265 then V-Nova did
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all my compares are riddles so please try to decipher them yourselves :) It is about Time Join the Revolution NOW before it is to Late ! http://forum.doom9.org/showthread.php?t=168004 |
5th October 2015, 08:40 | #26 | Link |
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So they created a custom x264 build using Perseus as noise modeller, like lowpass filtering the video to be compressed as AVC, and the output interleaving AVC and the highpass metadata?
I wish you had shared a link to your source. So I see only very interpretable screenshots, not knowing any certain context. Last edited by LigH; 5th October 2015 at 08:57. |
5th October 2015, 11:49 | #27 | Link |
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is this suppose to work like mp3pro but for video?
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6th October 2015, 08:12 | #28 | Link |
German doom9/Gleitz SuMo
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According to these quotes in the VideoHelp thread, we would assume so: similar to SBR used in mp3PRO and HE-AAC.
Please try hard to ignore most of the trolling there; Stears555 is already on several ignore lists. Last edited by LigH; 6th October 2015 at 08:15. |
6th October 2015, 08:32 | #30 | Link |
German doom9/Gleitz SuMo
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Not exactly, true; rather indirectly: Halving the sample frequency of audio divides the spectrum in a low frequency part which is encoded conventionally, and a high frequency part which is modelled in relation to the low frequency part.
What would that mean for videos? Encoding half the resolution = a fourth of the area conventionally, and modelling the details which were lost by the downsampling (which will have calculated an average, which is similar to blurring, the low-pass of image processing). That reminds me a lot on "Wavelet decomposition", using just one decomposition step. We should move this discussion from here to there, it's disturbing the "x264 development". Last edited by LigH; 6th October 2015 at 08:47. |
6th October 2015, 09:25 | #31 | Link | |
Artem S. Tashkinov
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Seems to be real:
Quote:
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6th October 2015, 09:40 | #32 | Link |
Artem S. Tashkinov
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From the look of it ( https://www.youtube.com/watch?v=vbEQx-dJG0k&t=1m8s ) these guys are heavily reliant on x264 ;-)
A nice screenshot ;-) Last edited by birdie; 6th October 2015 at 09:55. |
6th October 2015, 10:23 | #33 | Link |
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I don't know if this is just a translation problem, but these two sentences seem to have opposite meanings:
1. PERSEUS offers a substantial improvement compared to JPEG2000 and a quality that challenges H.264-intra-based production codecs such as AVC-Intra 2. increases in efficiency over contribution compression codes AVC-Intra I would have read "quality that challenges" as meaning, "almost but not quite as good as", yet the second sentence claims it's better. Does x264 have an intra only mode? (edit: wikipedia claims x264 has an AVC-Intra mode) And does it beat whatever AVC-Intra encoder was used in this test? Last edited by dapperdan; 6th October 2015 at 10:26. |
6th October 2015, 12:13 | #35 | Link | |
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Quote:
Of course also to deliver the updates where x264 is in use on the encoder/decoder side. You could pretty much implement this in any MPEG encoder that is their goal, fast easy deployment in the current MPEG ecosystem without extreme hardware change. Non interoperable Decoders would just ignore the improvement layer. We can just wonder why this wasn't part of the actual Standardization Process in H.265 and done by another consortium around MPEG members in the hidden. For the HEVC Advanced Licensing you now get a nice boost up the overall calculation is though still important but with V-Nova Perseus as a enhancer in Bandwidth it becomes something you should recalculate (especially as all this stuff was done under Mckinsey surveillance). Not sure how hard the hit will be for AFOMC but it's something to calculate pushing development cycles so far away because thinking HEVC Advanced wont be accepted shines in a new light now. Especially when we should see a merging of Perseus into HEVC Advanced Licensing. For me this is nothing that happens without a reason but very carefully planned out and keeping this secret is hitting hard. Though since mp3PRO/AAC-HE FGM and SVC it could have been expected to happen from someone, that implements it more efficient and brings everything together in a efficient hierarchical way (with enough resources @ hand), this is what the V-Nova part worked on in the hidden for almost 5 years. Any Codec now has to measure it's performance vs the for now unofficial HEVC-HE we seeing rising up here I hope it's not to late But seeing how fast this is spreading i totally underestimated their capabilities
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all my compares are riddles so please try to decipher them yourselves :) It is about Time Join the Revolution NOW before it is to Late ! http://forum.doom9.org/showthread.php?t=168004 Last edited by CruNcher; 6th October 2015 at 13:21. |
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6th October 2015, 18:10 | #37 | Link |
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We are already there
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all my compares are riddles so please try to decipher them yourselves :) It is about Time Join the Revolution NOW before it is to Late ! http://forum.doom9.org/showthread.php?t=168004 |
7th October 2015, 07:51 | #38 | Link |
German doom9/Gleitz SuMo
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Thank you, moderator, for moving.
Now I wonder, has anyone of you a little insight in noise modelling and frequency spectrum parametrization techniques, and some well grounded knowledge how efficient parametric detail restoration can be in visual techniques? Shall we expect it as convenient as known from audio formats? If my analogy of the decomposition is correct, then the 2D nature of video may even have an advantage that the lower frequency base has only a fourth of the area, so 3/4 of high frequencies are a lot of overhead to reduce by parametrization. But I am aware that the perception differs between audio and video signals. |
7th October 2015, 10:22 | #39 | Link |
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They combining SBR + FGM that should be pretty efficient Visually, no real surprise that Thomson was one of their first users there
It's a complete revival of it but as a base for it not like in H.264 a extra profile that practically no one is really using
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all my compares are riddles so please try to decipher them yourselves :) It is about Time Join the Revolution NOW before it is to Late ! http://forum.doom9.org/showthread.php?t=168004 Last edited by CruNcher; 7th October 2015 at 10:29. |
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