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+--- Thread: HEVC (also known as h.265) - Review (/showthread.php?tid=170084)
RE: HEVC (formerly known as h.265) - Review - un1versal - 2014-02-01
(2014-01-31, 05:55)davilla Wrote: gota love the hamster wheel. round and round it goes...
Nice,
in the same lines as this, eaten babies comes to mind 
RE: HEVC (formerly known as h.265) - Review - DJ_Izumi - 2014-02-02
Related, this just happened to me: "Why the fsck is this movie just playing a music visualization? Wait, crap, this is an HEVC encode... Well damn. o.O"
RE: HEVC (formerly known as h.265) - Review - nickr - 2014-02-02
Who changed the subject line? HEVC is not FORMERLY know as H.265, it is ALSO known as H.265. In the same way as H.264 is aka MPEG-4 Part 10 and aka AVC.
I remember everyone said AVC would give about 50% filesize (for same quality) as it's predecessor ASP. In practice I think it worked out more like 60%. I suspect the claim that HEVC will halve video bitrates will work out similarly.
Of course it is complicated by the fact that at about the same time that AVC was taking over from ASP people were moving to HD over SD - TV broadcasting in 720p/1080i and blurays appearing in 1080p. The greater framerate obviously counters the reduction in bitrate achievable from using a better codec. And many people still seem to prefer ASP for SD encode, eg SD TV rips and DVD rips. Believe it or not there are still people torrenting SD TV rips and playing them on their XVID capable DVD player, they don't want AVC let alone HEVC.
This time there is a move from HD to 4K/8K at generally the same time. It'll be interesting to see if encoders for example stick to AVC for HD and reserve HEVC for 4K and above. I suspect people are more savvy now and at least we won't be stuck with rips that MUST fit on a CD!!
RE: HEVC (formerly known as h.265) - Review - Piers - 2014-02-02
1. Why are people calling 'axxo' and 'PublicHD' pirated content Scene releases? (I won't mention piracy again)
2. Why has the thread title incorrectly changed?
3. Why don't many people appear to be listening to the developers on this?
RE: HEVC (formerly known as h.265) - Review - Prof Yaffle - 2014-02-02
I wondered about the H.265 vs HEVC nomenclature... from what I can see, it was developed as H.265 (the ITU term) and MPEG-H Part 2 (ISO), but published as ISO/IEC 23008-2:2013 as a standard, subtitled HEVC. The ITU H.265 is then a recommendation. Or something like that!
It does appear to me that it's realistically thus known as both HEVC and H.265, in the same way as H.264 was (and is) known as AVC in some quarters. If someone can clear this up then I'll go and twiddle the FAQ if nothing else.
As for Piers' other points... well, well said. The question is whether these "scene releases" drive significant use of XBMC, whether it's just a noisy minority of inveterate and noisy downloaders, or whether anyone's actually bothered - and, of course, the fact remains that the internal FFMPEG ain't being updated any time soon, as has already been spelled out with clear rationale.
It is what it is. If you're really that concerned, I guess you could always re-encode your hooky files in H.264 if you can figure out how to.
EDIT
Belay that, Ned has already updated the FAQ.
RE: HEVC (formerly known as h.265) - Review - tutu - 2014-02-03
Well I've spent some time playing around with HEVC and concluded that 720p encode at 4gb plays fine, a 1080p 10gb encode uses 100% CPU on 1 core on my haswell NUC.
Only one core seems to be used, is there a way to decode using both cores? I assume Frame Multi Threaded Decoding (less reliable) is the option. However it doesn't seem to balance both cores.
Thanks
RE: HEVC (formerly known as h.265) - Review - davilla - 2014-02-03
h265 decode is not multi-threaded in FFMpeg.
RE: HEVC (formerly known as h.265) - Review - DJ_Izumi - 2014-02-03
(2014-02-03, 06:08)davilla Wrote: h265 decode is not multi-threaded in FFMpeg.
Well, that'll be all but useless until it gets multithreaded. No more need to worry about it getting into XBMC in the meanwhile then. :X
RE: HEVC (formerly known as h.265) - Review - tutu - 2014-02-03
(2014-02-03, 06:08)davilla Wrote: h265 decode is not multi-threaded in FFMpeg.
That's good to know thanks!
RE: HEVC (formerly known as h.265) - Review - voochi - 2014-02-03
OpenHEVC has supported multi-threaded decoding for a long time.
RE: HEVC (also known as h.265) - Review - tutu - 2014-02-03
(2014-02-03, 12:47)voochi Wrote: OpenHEVC has supported multi-threaded decoding for a long time.
Any ideas on how I would go about using it, if it's built into ffmpeg? Thanks
Looks like I'm not the only one after HEVC decoding
http://forum.xbmc.org/showthread.php?tid=165707&pid=1616568#pid1616568
RE: HEVC (also known as h.265) - Review - davilla - 2014-02-03
(2014-02-03, 12:47)voochi Wrote: OpenHEVC has supported multi-threaded decoding for a long time.
XBMC uses FFMpeg, so OpenHEVC being multi-threaded is a useless option.
To reiterate what I've been saying for about a year now and this seems to get lost in the noise of a shiny new codec. You want h265, then get big iron and use software decode. Say goodbye to atoms and ions and androids for at least two years while those boxes catch up.
RE: HEVC (also known as h.265) - Review - DJ_Izumi - 2014-02-03
(2014-02-03, 16:42)davilla Wrote: XBMC uses FFMpeg, so OpenHEVC being multi-threaded is a useless option.
To reiterate what I've been saying for about a year now and this seems to get lost in the noise of a shiny new codec. You want h265, then get big iron and use software decode. Say goodbye to atoms and ions and androids for at least two years while those boxes catch up.
This is why I thought ahead when I built mine and went with an A8-3870K. My thoughts were 'I don't want to have to upgrade my box, aside from hard drives, for YEARS.' Ugh, I remember struggling as it was with the classic XBMC, trying to get ANY h.264 to run through that little 733mhz Celeron in that machine. :X
RE: HEVC (also known as h.265) - Review - voochi - 2014-02-03
(2014-02-03, 16:42)davilla Wrote: XBMC uses FFMpeg, so OpenHEVC being multi-threaded is a useless option.
And what decoder do you think FFMPEG are using?
RE: HEVC (also known as h.265) - Review - davilla - 2014-02-03
(2014-02-03, 17:59)voochi Wrote:(2014-02-03, 16:42)davilla Wrote: XBMC uses FFMpeg, so OpenHEVC being multi-threaded is a useless option.
And what decoder do you think FFMPEG are using?
Then it should be working now
