GH5 Why no HEVC 10bit 4:2:2 mode?
- Thread starter roxics
- Start date
H265/HEVC was considered a bit too demanding for the market at that time (January, 2017) and price point. Samsung NX-1 had it two years earlier but Samsung was not part of the cartel. On top of that, post/editing were a bit too demanding for H265 as well. And really, there wasn't much need for it, given the work the GH-5 owners were likely getting.
filmguy123
Veteran
I'm sure the GH6 will.
The GH5 does have HEVC 10 bit 4:2:0 4K30/4K24 72 Mbps, and also a 4992 x 3744 10 bit 30 fps mode, as well a 4K 400 Mbps 10bit 4:2:2 All-I in h.264 so codec-wise there is not much to complain about with a good assortment of quality choices and bit rates.
HEVC is not vastly different than h.264 in that both use DCT for spatial compression but HEVC has more temporal compression. It boils down to not so much better quality from HEVC than the same quality at lower bit rate.
HEVC is not vastly different than h.264 in that both use DCT for spatial compression but HEVC has more temporal compression. It boils down to not so much better quality from HEVC than the same quality at lower bit rate.
NorBro
Major Contributor
Reading back the inquiry again, I now think the question was more about HEVC in general than about the exact specifications.
I don't remember what the NX1 had, but if it was 4:2:0 then I think the first camera that had HEVC 10-bit 4:2:2 was Canon's XF705 from 2018.
Based on forum discussions that popped up about it, the X-T3 seemed like it was the first cinema hybrid to really introduce the world to it, but that one was also 10-bit 4:2:0, internally.
I don't remember what the NX1 had, but if it was 4:2:0 then I think the first camera that had HEVC 10-bit 4:2:2 was Canon's XF705 from 2018.
Based on forum discussions that popped up about it, the X-T3 seemed like it was the first cinema hybrid to really introduce the world to it, but that one was also 10-bit 4:2:0, internally.
cyvideo
Veteran
HEVC H.265 will not be going very far in the future with the likes of major content suppliers like NETFLIX, FACEBOOK, YOUTUBE, BBC, AMAZON, and HULU as they will be providng content in AV1. Youtube already boycotts HEVC by providing 4K video only via its own VP9 codec. As a consequence, it currently does not play on Apple devices. AV1 is licence free and up to 30% more efficient than HEVC H.265. HEVC H.265 licencing has been a disaster. Although H.265 was released almost 5 years ago, adoption is slow. The primary reason for this is that unlike H.264 which has 1 patent pool, H.265 has 3 patent pools with different pricing structures and terms & conditions. The second patent pool (HEVC Advance) was introduced in 2015, 3 years after the launch. This unclarity about the royalties situation around H.265 was hindering the adoption and as a result, primary browsers have no support at all (e.g. Chrome, Firefox) or only partial support (Edge). Due to this, many content providers have stuck with H.264 because at least they know it will always play. H.265 IMHO may not amount to much once the following alliance members swing in behind AV1. For the above reasons I don't see many camera manufacturers going overboard on supporting H.265 in the future as in contrast to HEVC, AV1 will also show major improvements at low bitrates in cameras. AV1 is also backed by major chip vendors like INTEL, AMD, BROADCOM and ARM. To top it off in addition, the codec will be open source with the very permissive BSD licensing speeding up adoption. All in total contrast to what is happening with HEVC H.265. H.265 is a great codec but organizationally it has been and still is a disaster in implementation across the media and production industry.
Chris Young
http://aomedia.org/membership/members/
Chris Young
http://aomedia.org/membership/members/
YouTube used to not even accept my HEVC upload attempts but now it does, which is very convenient for me. Also, if you want to see 8k in HDR on YouTube, your HTPC, browser, player or smart TV app needs to have an AV1 decoder. My 8K Samsung QLED is a 2020 model and does not have the AV1 decoder. It will play back 8K 60/FPS HDR10 HEVC 10bit 420 from a USB flash drive or NAS, but streaming from YouTube 8K VP9 is only SDR, or 4K HDR10+. Such is life on the bleeding edge of tech.
cyvideo
Veteran
Yes, it's all a bit of a mess. I think it's called advancement. Having to multi-purpose delivery requirements, broadcast, web, optical media [yes still get demand for that] etc is all a bit of a drag. VHS was so simple, wasn't it?
Chris Young