H.266/Versatile Video Coding (VVC)

Post by fomine3 » Wed, Jul 08, 2020, 6:16 AM UTC

Ace17 wrote: post #297

Unklejoe wrote: post #14

It's interesting that they are able to continue improving video compression. You'd think that it would have all been figured out by now. Is this continued improvement related to the improvement of technology? Or just coincidental? Like, why couldn't have H.266 been invented 30 years ago? Is it because the computers back in the day wouldn't have been fast enough to realistically use it? Do we have algorithms today tha…

Ten-year software video compression engineer here: TL;DR: it's partly because we're using higher video resolutions. A non-negligible part of the improvement stems from adapting existing algorithms to the now-doubled-resolution. Almost all video compression standards split the input frame into fixed-size square blocks, aka "macroblocks". To put it simply, the macroblock is the coarsest granularity level at which compr…

Post by fomine3 » Wed, Jul 08, 2020, 6:32 AM UTC

zanny wrote: post #286

zionic wrote: post #138

Earlier quoted context omitted.

AV1 beats h.265 by 20-30%, h.266 beats h.265 by 50%. Honestly for that little of an improvement I'll go with AV1.

The audience of h266 and whom will "win" the codec war isn't individual consumers, even powerusers that know what a codec is. H266 will be adopted by broadcasting and archival and will make mpeg tankers of money. Whatever the next generation of physical home media is after blu-ray will use it, the player for it will read it, and your TV cable box will take h266 signals in to decode. The costs of paying mpeg will be i…

Post by throw0101a » Wed, Jul 08, 2020, 11:31 AM UTC

threeseed wrote: post #320

throw0101a wrote: post #278

Earlier quoted context omitted.

> No, because the market is more than happy to pay [...] Is it? Because Google/YouTube, Amazon/Twitch, Netflix, Microsoft, Apple, Samsung, Facebook, Intel, AMD, ARM, Nvidia, Cisco, etc, are all part of AO Media: * https://aomedia.org/membership/members/ The main major tech player I don't see is Qualcomm.

The use cases for video is significantly larger than a few tech companies e.g broadcast. And most of those companies are also part of MPEG as well.

Post by p_l » Wed, Jul 08, 2020, 11:50 AM UTC

jariel wrote: post #275

dfox wrote: post #263

Earlier quoted context omitted.

In theory you can do such kind of search. Problem is that doing that is impractically expensive (and at least in some jurisdictions doing that can actually raise your liability in case of patent infringement).

Does such a search indemnify one of liability though, is the big question?

Post by rasz » Wed, Jul 08, 2020, 10:55 PM UTC

joveian wrote: post #355

Unklejoe wrote: post #14

It's interesting that they are able to continue improving video compression. You'd think that it would have all been figured out by now. Is this continued improvement related to the improvement of technology? Or just coincidental? Like, why couldn't have H.266 been invented 30 years ago? Is it because the computers back in the day wouldn't have been fast enough to realistically use it? Do we have algorithms today tha…

Good compression is quite complex and can go wrong in an unimaginable variety of ways. Remember when Xerox copiers would copy numbers incorrectly due to compression? The numbers would look clear, they just wouldn't always be the same numbers that you started with. https://www.theregister.com/2013/08/06/xerox_copier_flaw_mea...