2012-08-16, 02:54 | Link #1 |
Giga Drill Breaker
Join Date: Jan 2009
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H265 as early as 2013
H265 will half the video filesizes of H264 videos or H265 offers higher resolution at same filesizes as todays H264 videos and we might see H265 as early as 2013
source: http://www.engadget.com/2012/08/15/m...ideo-standard/ http://phys.org/news/2012-08-mpeg-codec-halves-bit.html |
2012-08-16, 03:54 | Link #2 | |
Translator, Producer
Join Date: Nov 2003
Location: Tokyo, Japan
Age: 44
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2012-08-16, 08:07 | Link #5 | |
Hardcore meets Casual
Join Date: Feb 2008
Location: Oklahoma City, Oklahoma
Age: 35
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No! you prolly won't be able to play 10-bit on a 10 year old comp or a tablet or a phone! Make sure you got the right codecs etc. Anyway H265 is good for a lot of us who contribute to the subbing community part-time esp. encoders.
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2012-08-16, 08:16 | Link #6 | |
Translator, Producer
Join Date: Nov 2003
Location: Tokyo, Japan
Age: 44
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So if fansubbers want to switch to h265 they have to give up on 10bit and go back to 8. (Yes, I know that there's higher precision internally in the codec which should make this a moot point as far as filesize but fansubbers wouldn't be able to brag about how they're releasing in 10bit anymore ).
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2012-08-16, 09:38 | Link #9 |
Senior Member
Join Date: Dec 2008
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If there's anything I've learned about fansubbers, then it's that they will increase the filesizes further with each better technology.
Source? I was kinda disappointed that the first release will only cover 8 bit (and 2D 4:2:0), but if it's really using higher precision internally even for 8 bit it's fine. |
2012-08-16, 09:39 | Link #10 | ||
Translator, Producer
Join Date: Nov 2003
Location: Tokyo, Japan
Age: 44
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Edit: I went and skimmed the draft spec and Wiki is right: each video picture can use whatever bitdepth, both for luma and chroma (from 8-14). In main profile the sequence parameter sets have to have bit depths of 8, but I think the picture parameters are not fixed so the encoder can choose whatever is most efficient for that frame I suppose.
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Last edited by Quarkboy; 2012-08-16 at 10:08. |
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2012-08-17, 02:21 | Link #12 | |
Superidol
Join Date: Dec 2008
Age: 34
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I wonder if we going to finally get 1080p HDTV video quality without the horribles upscales we have nowadays even in BD.
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2012-08-17, 05:57 | Link #15 |
Senior Member
Join Date: May 2006
Location: California
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According to the notes from the last HEVC meeting, it sounds like only Main profile supporting 8-bit 4:2:0 will be finalized in January 2013. All other profiles (10-bit to 14-bit, 4:2:2, 4:4:4 and others) won't be finalized until January 2014. It also doesn't seem like HEVC Main Profile allows IBDI at all, and is completely fixed at 8-bit.
bit_depth_luma_minus8 = 0 bit_depth_chroma_minus8 = 0 BitDepthY = 8 + bit_depth_luma_minus8 BitDepthC = 8 + bit_depth_chroma_minus8 Maybe things will become a bit more clear in a later draft. IBDI may be restricted to the profile extensions to be defined in 2014. Google seems to have a few older references to a "High Efficiency Profiles" supporting IBDI in addition to "Main Profile" which didn't, but maybe that got scrapped for the time being to meet the January 2013 deadline they set. It will be interesting to see how this all develops over the next few years.
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2012-08-17, 07:17 | Link #16 | |
Translator, Producer
Join Date: Nov 2003
Location: Tokyo, Japan
Age: 44
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Too bad. By the way, wouldn't quantum computers enable incredibly fast and effecient video compression? Quantum computers are essentially parallel matrix multipliers, and there's already algorithms (similar to Shor's factoring algorithm) which can do fourier tranforms on quantum states in n log n time. Has anyone actually done any research into applying quantum computers to mpeg-like video compression? Or better yet design a new video compression scheme that takes advantage of the types of calculations quantum computers are good at?
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