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Thread: HEVS vs H264

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    HEVC vs H264

    High Efficiency Video Coding (HEVC) is a video compression standard, a successor to H.264/MPEG-4 AVC (Advanced Video Coding) that was jointly developed by the ISO/IEC Moving Picture Experts Group (MPEG) and ITU-T Video Coding Experts Group (VCEG) as ISO/IEC 23008-2 MPEG-H Part 2 and ITU-T H.265.[1][2][3][4] MPEG and VCEG established a Joint Collaborative Team on Video Coding (JCT-VC) to develop the HEVC standard.[1][2]
    HEVC is said to double the data compression ratio compared to H.264/MPEG-4 AVC at the same level of video quality. (from Wikipedia)
    What do you think will be the future codec or not?
    You can increase the compression?
    Last edited by Nania Francesco; 17th September 2013 at 19:39.

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    HEVC is also known as H265 and is official successor of H264
    Last edited by Bulat Ziganshin; 9th September 2013 at 14:23.

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    h265?

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    This will probably be the future.

    However, this is several years in the future. Dark Shikari(x264 dev) mentioned that because of the drastic changes compared to H264, it's going to take a long time to get the codec tuned right such that it becomes better than H264.

    In the meantime, x265 is under development. See: https://bitbucket.org/multicoreware/x265/wiki/Home

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    Quote Originally Posted by Mangix View Post
    This will probably be the future.

    However, this is several years in the future. Dark Shikari(x264 dev) mentioned that because of the drastic changes compared to H264, it's going to take a long time to get the codec tuned right such that it becomes better than H264.

    In the meantime, x265 is under development. See: https://bitbucket.org/multicoreware/x265/wiki/Home
    Yeah, but AFAIK none of x264 devs works on it. They agreed to use the name, there is code reuse, but this is a very different project.

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    Hmm I thought the x264 devs worked on it. Only time will tell if they will I guess.

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    The basis of everything in image compression reduces the end to two essential filters DCT and DWT to be able to get with modern means a decent frame rate, think that there may be an alternative to this in the short term?

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    I don't know if it is truly an alternative, but in it's infancy state, Daala has some interesting concepts on lapped transforms, see: http://xiphmont.livejournal.com/tag/daala

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    First HEVC encoder audio/video relased !
    very very nice ! but slow at moment in compression !
    http://www.divx.com/en/software/hevc-plugin
    Last edited by Nania Francesco; 17th September 2013 at 19:39.

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    .................................................. ........
    Last edited by GOZARCK; 5th November 2013 at 20:25.

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    The opinion of it on doom9 is that it's pretty bad, worse than x264. A premature attempt at best.

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    .................................................. .................................................. .......
    Last edited by GOZARCK; 5th November 2013 at 20:24.

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    There are binary release of X.265 here:
    http://forum.videohelp.com/attachmen...e384-Vid01.zip (this should be the most updated)
    http://forum.videohelp.com/threads/3...E-mingw-builds (other binary release, links in the first post)
    http://x264.fushizen.eu/builds/hevc-hm/ (see http://http://forum.doom9.org/showthread.php?t=166586 for discussion)
    http://code.google.com/p/x265/downloads/list (older release from google code project)

    Divx is releasing for free its h.265 HEVC encoder as command line binary:
    The official page is: http://labs.divx.com/node/127927
    Encoder: http://download.divx.com/hevc/DivX265.exe
    Muxer: http://download.divx.com/hevc/mkvtoolnix6.2.0-promised_land_rovi_v1.0.4.zip


    The x.265 team is independent from x.264 team (despite the name, it has nothing to do with it); someone says that the the x.264 team could even join the
    DAALA project, that claims to be next-generation after x.265 (webm HD?)
    However there still very little information about DAALA; official ink is:
    https://xiph.org/daala/ (it contains information and a link to the GIT source code repository)






    Last edited by ZGish; 19th September 2013 at 15:49.

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    There are some demos on Daala, And while it's not much, It's still something.
    Seemingly it seems they're trying to flesh out a better way of doing things, instead of doing more or less the same thing as has been done for a long time now but more and more refined.

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    How is HEVC coming along? I just saw an episode of TV show 'The Legend of Korra' (720p) in a size of just 38MB. Last time I tried encoding a 1m30s video using Handbrake, it took a lot of time and the result wasn't too good, now I can see whole movies in HEVC.
    I am wondering what programs are available to encode to such low sizes without sacrificing quality, and what kind of hardware is recommended.

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    Quote Originally Posted by RBX View Post
    How is HEVC coming along? I just saw an episode of TV show 'The Legend of Korra' (720p) in a size of just 38MB. Last time I tried encoding a 1m30s video using Handbrake, it took a lot of time and the result wasn't too good, now I can see whole movies in HEVC.
    I am wondering what programs are available to encode to such low sizes without sacrificing quality, and what kind of hardware is recommended.
    No special hardware: you can get decent ratio with a 3x (~75ftp) of encoding speed with a stock 6-core i7 on 720p.
    In other words: about as fast as MP4 \ h264 codec (...more or less... of course )

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