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7th October 2015, 23:11 | #41 | Link |
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How it is different from the old film grain tecnology?
https://hopa.memberclicks.net/assets...gt_hpa2006.PDF also why don't take the residual noise and model for the whole frame/gop a related high comprimible noise pattern and add it right after mdct and mv steps?
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powered by Google Translator Last edited by Motenai Yoda; 7th October 2015 at 23:32. |
1st July 2016, 10:48 | #43 | Link |
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A sort-of review of the codec/noise modeller:
http://www.streamingmedia.com/Articl...1816&PageNum=1 They maintain an upbeat tone, but I think the data suggests that it's basically marketing BS? Certainly not living up to the early marketing. There's *something* there, but it seems ultra-niche and it's not clear to me that it's even much of a win in that niche. |
24th August 2017, 14:19 | #47 | Link |
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We've seen a similar picture of x265 vs x264 in the past. Happens with low bits/pixel. If you downscale the x264 encode will be much better (than low bpp x264). And if I'm not mistaken that's a core component of Perseus, i.e. downscale, encode via e.g. x264 and on playback decode H.264, upscale plus some postprocessing (with info from extra layer?).
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14th September 2017, 23:20 | #49 | Link |
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looks more like how progressive jpeg works, a low quality/resolution layer at the base, and one or more refinement layers at higher quality/resolution witch supply residual details (difference) into a space domain (maybe using the same mv analysis of the underlying stream, rather than an sbr or fgt.
Also this way they can stream out only the requested layers or only the base layer, and change how this base is encoded.
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3rd August 2019, 22:18 | #51 | Link |
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I can't treat the whole Perseus thing like anything other than headline-grabbing BS, but here's something I ran into while researching digital TV standards in Europe, for what it's worth.
Sky Italia deploys PERSEUS compression for ‘IPTV’ in first DTH and STB implementation for codec Italian company, Italian TV station, there's obviously some "home cooking" going on. But perhaps people who get this channel can chime in? |
4th August 2019, 11:04 | #53 | Link |
RipBot264 author
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Looks like that PERSEUS guys are smarter than people behind AV1 and VVC. MAGIC!
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4th August 2019, 11:19 | #54 | Link | |
Artem S. Tashkinov
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From https://www.v-nova.com/perseus-video...on-technology/
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18th October 2019, 19:54 | #55 | Link |
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https://www.itu.int/en/ITU-T/Worksho...esentation.pdf
Still trying to figure out what Perseus actually is but since it's getting standardized by MPEG it does seem to be a real thing. Seems like it could be something that could have just been baked into VVC, not sure why it's still being presented as a seperate layer rather than combined with other MPEG codecs. Royalties perhaps? |
20th October 2019, 03:55 | #56 | Link |
Derek Prestegard IRL
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Backwards compatibility. You can use Perseus with AVC and a device without a Perseus decoder can still play the 1/4 resolution AVC layer no problem.
Their proprietary real-time contribution encoders / decoders (Perseus Pro) are non backwards compatible. |
4th March 2020, 00:22 | #57 | Link | |
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Quote:
https://www.v-nova.com/v-nova-video-...logy/#perseus2 Last edited by shades; 4th March 2020 at 00:25. |
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6th October 2020, 23:15 | #58 | Link |
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Next-generation SMPTE VC-6 video production codec standard published...
https://news.creativecow.net/story/901934 Last edited by kolak; 6th October 2020 at 23:31. |
15th October 2020, 08:26 | #59 | Link | |
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