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+--- Thread: HEVC (also known as h.265) - Review (/showthread.php?tid=170084)
RE: HEVC (also known as h.265) - Review - noggin - 2014-06-30
(2014-06-26, 02:24)nickr Wrote:(2014-06-25, 13:50)DocG Wrote: Ok, how far off are we with HEVC in XBMC? Is there any half-way stable version that plays it? I've finally gotten a set of machines that can play Hi10P, and now people start encoding in HEVC, which I can't currently play.If you can't play HEVC then don't encode with it!
Some of us would like to watch the HEVC encoded 4K 2160/59.94p test broadcasts (or try to!) The BBC are broadcasting three matches OTA on DVB-T2 as a test in this format. I can watch recordings I've made using the OpenHEVC builds of ffplay - which is pretty encouraging. Sadly I don't have a 4K display - so I can either watch downscaled to 1080/59.94p or chose a 1920x1080 section to watch cropped - which is interesting...
RE: HEVC (also known as h.265) - Review - wsnipex - 2014-06-30
get out your intel i7, install a helix nightly and you are good to go. Although 4k 60hz might be a problem
RE: HEVC (also known as h.265) - Review - noggin - 2014-06-30
(2014-06-30, 13:53)wsnipex Wrote: get out your intel i7, install a helix nightly and you are good to go. Although 4k 60hz might be a problem
Cheers. Will try that. Next step is to persuade TV Headend to receive it (rather than streaming over IP from DVB Viewer)
My i5-3570K can just about keep up with it if I run a 1920x1080 crop rather than scale. The scaling pushes it over the edge. This is using the OpenHEVC fork of ffmpeg's ffplay...
Have an i7-2600K over clocked to 4GHz available to play with - will try that.
*** EDIT : Can confirm nightly build plays the 4k 2160/59.94p stuff scaled to 1920x1080/59.94p on an i5-3570K (running Ubuntu with XFCE) with lots of skipping. Encouraging though ***
RE: HEVC (also known as h.265) - Review - rd1979 - 2014-07-01
(2014-06-30, 12:04)noggin Wrote:(2014-06-26, 02:24)nickr Wrote:(2014-06-25, 13:50)DocG Wrote: Ok, how far off are we with HEVC in XBMC? Is there any half-way stable version that plays it? I've finally gotten a set of machines that can play Hi10P, and now people start encoding in HEVC, which I can't currently play.If you can't play HEVC then don't encode with it!
Some of us would like to watch the HEVC encoded 4K 2160/59.94p test broadcasts (or try to!) The BBC are broadcasting three matches OTA on DVB-T2 as a test in this format. I can watch recordings I've made using the OpenHEVC builds of ffplay - which is pretty encouraging. Sadly I don't have a 4K display - so I can either watch downscaled to 1080/59.94p or chose a 1920x1080 section to watch cropped - which is interesting...
Where can I find such sample recordings?
RE: HEVC (also known as h.265) - Review - noggin - 2014-07-01
(2014-07-01, 04:29)rd1979 Wrote:(2014-06-30, 12:04)noggin Wrote:(2014-06-26, 02:24)nickr Wrote: If you can't play HEVC then don't encode with it!
Some of us would like to watch the HEVC encoded 4K 2160/59.94p test broadcasts (or try to!) The BBC are broadcasting three matches OTA on DVB-T2 as a test in this format. I can watch recordings I've made using the OpenHEVC builds of ffplay - which is pretty encouraging. Sadly I don't have a 4K display - so I can either watch downscaled to 1080/59.94p or chose a 1920x1080 section to watch cropped - which is interesting...
Where can I find such sample recordings?
The BBC are broadcasting them on DVB-T2 from three transmitters. http://www.bbc.co.uk/rd/blog/2014/06/bbc-r-d-ultra-high-definition-trials http://www.bbc.co.uk/rd/blog/2014/06/bbc-rd-ultra-high-definition-trials-1
Other broadcasters have trialled stuff on DVB-S2 in Europe. (And I believe Korean broadcasters have also trialled DVB-T2 for tests)
RE: HEVC (also known as h.265) - Review - MasterCATZ - 2014-07-24
I just wanted to say awsome work
HEVC playback sweat as smooth on my AMD A10
XBMC 14 Alpha1 FTW
RE: HEVC (also known as h.265) - Review - Prof Yaffle - 2014-07-24
Low-power hardware assistance is on its way: http://www.allwinnertech.com/en/news/compnews/Allwinner%27s%20first%2064-bit%20tablet%20processo.html
... Allwinner's first 64-bit tablet processor, with its support for 4K video codec, H.265 ...
Tell me, those folks that have tried HEVC: is there any noticeable difference in quality on a normal TV? I can't see how there can be since you'd have to downscale (unless you go for same size file as H.264 but higher bitrate because of the greater compression, I suppose).
RE: HEVC (also known as h.265) - Review - un1versal - 2014-07-25
HEVC, some low profile I presume (mediainfo doesn't say) info down there is for 720p but it will do UHD as well, works on ATOM D2550 perfectly smooth like butter. Anything other profiles struggles as expected.
Code:
Format : Matroska
Format version : Version 4 / Version 2
File size : 3.10 GiB
Duration : 1h 37mn
Overall bit rate : 4 556 Kbps
Movie name : Filth
Encoded date : UTC 2014-01-26 11:17:24
Writing application : mkvmerge v6.7.0 ('Back to the Ground') 64bit built on Jan 8 2014 15:10:52
Writing library : libebml v1.3.0 + libmatroska v1.4.1
Video
ID : 1
Format : HEVC
Format/Info : High Efficiency Video Coding
Codec ID : V_MPEGH/ISO/HEVC
Duration : 1h 37mn
Bit rate : 3 698 Kbps
Width : 1 280 pixels
Height : 544 pixels
Display aspect ratio : 2.35:1
Frame rate mode : Constant
Frame rate : 24.000 fps
Bits/(Pixel*Frame) : 0.221
Stream size : 2.52 GiB (81%)
Title :
Language : English
Default : Yes
Forced : No
Audio
ID : 2
Format : DTS
Format/Info : Digital Theater Systems
Mode : 16
Format settings, Endianness : Big
Codec ID : A_DTS
Duration : 1h 37mn
Bit rate mode : Constant
Bit rate : 768 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Bit depth : 24 bits
Compression mode : Lossy
Stream size : 535 MiB (17%)
Language : English
Default : Yes
Forced : NoRE: HEVC (also known as h.265) - Review - tential - 2014-07-27
(2014-07-24, 17:32)Prof Yaffle Wrote: Low-power hardware assistance is on its way: http://www.allwinnertech.com/en/news/compnews/Allwinner%27s%20first%2064-bit%20tablet%20processo.html
... Allwinner's first 64-bit tablet processor, with its support for 4K video codec, H.265 ...
Tell me, those folks that have tried HEVC: is there any noticeable difference in quality on a normal TV? I can't see how there can be since you'd have to downscale (unless you go for same size file as H.264 but higher bitrate because of the greater compression, I suppose).
I've been following their own threads on the doom9 site and it doesn't seem like it's really ready yet.
Even if you get the same file size as an x264 encode with an x265 encode it's not positive that your x265 encode will look better.
It's still being worked on, there are things being fixed so you just pretty much have to wait for bugs to be ironed out in the encoding process. It makes more sense when you read the thread and hear their explanations, I can't explain it well myself.
RE: HEVC (also known as h.265) - Review - AbRASiON - 2014-07-28
I remember getting all excited for x2.64 many years ago before it came out, eagerly looking forward to using a shiny new technology which is better etc etc
Reality is though, it took many, many many years to become ubiquitous and even more to become common in home devices for friends / family (DVD players with USB, set top boxes with USB etc - many years to support x.264)
It's finally here and common. It'll be 5 to even 10 years before x.265 is as common for regular devices, Android phones etc.
RE: HEVC (also known as h.265) - Review - nickr - 2014-07-28
I think uptake will be faster this time than h.264 was.
Please note that h.264 is the AVC standard, x264 is a software implementation of the standard.
Similarly h.265 is the HEVC standard, x265 is a software implementation of the standard.
RE: HEVC (also known as h.265) - Review - AbRASiON - 2014-07-28
X.264, H2.64, regardless of that, the more devices that support something, the longer it takes to flush out of the system.
Us, as techbleeding nerds might adopt .265 sooner than most - but we're going to have the same crappy teething pains we just got over now. I'm sure some of us recall converting files back to DVD or DIVX or MPG2 or whatever it is you prefer that peoples old crappy devices needed.
In 4+ years we'll be lamenting needing to convert .265 back to .264 for Uncle Sammy's media box in the pool room.
Also am I imagining things or did I just see a post earlier mentioning the standard for .265 is still somewhat in flux and being tweaked?
EDIT: Not to say I don't want .265, it's just not going to be a nice quick change sadly. I'd love to "buy" 20% more disk space instantly.
RE: HEVC (also known as h.265) - Review - voochi - 2014-07-29
(2014-07-28, 06:34)AbRASiON Wrote: Also am I imagining things or did I just see a post earlier mentioning the standard for .265 is still somewhat in flux and being tweaked?Version 2 of the spec will add some extensions but that will not affect the already defined profiles and levels.
EDIT: Not to say I don't want .265, it's just not going to be a nice quick change sadly. I'd love to "buy" 20% more disk space instantly.
RE: HEVC (also known as h.265) - Review - teeedubb - 2014-07-29
Looks like h265 support is coming to VDPAU. The article hints that a maxwell GPU will be required which is a shame...
http://www.phoronix.com/scan.php?page=news_item&px=MTc1MTc
RE: HEVC (also known as h.265) - Review - zag - 2014-08-16
Just tested Big Bunny 720p x265 version on my i3 NUC.
Looks great and CPU was resonable!
