Slashdot Mirror

← Back to Domains

Domain: hhi.de

Stories and comments across the archive that link to hhi.de.

Comments · 12

  1. Re:vs H.264 yes by dinfinity · · Score: 2 · on BBC Confirms 50% Bitrate Savings For H.265/HEVC Vs H.264/AVC (bbc.co.uk)

    Additional info as to which encoders they used:
    "HEVC HM Reference Software Codebase, Version 12.1. [Online]. Available: http://hevc.hhi.fraunhofer.de/... "
    "AVC JM Reference Software Codebase, Version 18.5. [Online]. Available: http://iphome.hhi.de/suehring/... "

    Also, my experience with x265 encodes have been that (dark) low detail areas tend to look terrible, whereas everything else looks extremely good given the bitrate (be it high or low). I remember reading that this was a known (and non-trivial) issue in the x265 implementation at the time.

  2. Why VP9? by billcarson · · Score: 1 · on YouTube Goes 4K — and VP9 — At CES

    First google result gave me this comparison: http://iphome.hhi.de/marpe/download/Performance_HEVC_VP9_X264_PCS_2013_preprint.pdf Seems like VP9 is even doing worse than the current-generation h.264 encoders. So we're using worser codecs for the benefit of not having to deal with patent issues?

  3. VP9 vs x264 by Taco+Cowboy · · Score: 5, Informative · on Firefox Gains Support for VP9 Video Codec

    Disclaimer: I am not the author of the following pdf

    http://iphome.hhi.de/marpe/download/Performance_HEVC_VP9_X264_PCS_2013_preprint.pdf

    According to the above pdf

    "x264 encoder achieves an average gain of 6.2% in terms of BD-BR savings compared to VP9

  4. Re:MPEG-4. And soon, H-264. by Tab+is+on+Slashdot · · Score: 1 · on Video Formats for non-Windows Users?

    Thus, when H.264 encoders become availible

    They've been available for some time...

    NeroDigital
    x264
    VideoSoft
    Moonlight
    Sorenson
    Reference encoder

    And those are just off the top of my head.

    "WMP support" is already available as there are several directshow splitters and decoders around. VideoLAN's support is almost complete, the only essential things it lacks are deblocking for b-frames and the new high profile stuff.

  5. Re:H.264 by Anonymous Coward · · Score: 5, Informative · on Comparing Codecs for 2004

    I realize it's not available yet, Huh? You can get source code of the reference hode, or zillions of commercial implementations

  6. For that application, yup by IcEMaN252 · · Score: 1 · on Building a Multi-Channel PVR System?
    From Motion:
    Motion detects motion by comparing a fresh grabbed image with a reference image. If there is no motion and no noise new_image-ref_image should be zero. If there has been a change in the picture the result will be different. To prevent noise to be seen as motion the change has to have a certain level and there have to be a certain amount of changes before a motion is declared.

    The reference frame itself is recursifly updated with the new picture, so after it has been updated with pictureN it will consist out of: 1/2*pictureN + 1/4*pictureN-1 + 1/8*pictureN-2 and so on.
    That's great for a stationary camera, but for anything with a jumpcuts (scene changes, commericials, etc), it obviously fails. So security cameras thats great. Don't use it for PVRs, but security cameras go for it.

    I have to say though, isn't this really just an extremely striped down variant of MPEG style compression, or at least a similiar idea to Motion Compensation?
  7. I Like This... Kinda by shut_up_man · · Score: 1 · on Sun, Philips Push MPEG-4 Up Steep Hill

    So, two big companies are getting behind an open, high-quality video standard? Sounds good, and
    I suspect MPEG4 has a better chance against MS/Real/Apple than people realise.

    Being an open standard means that you can check out the technical overview on the MPEG4
    site right now if you want an idea of how it works. MS/Real/Apple is NEVER going to be this
    forthcoming - they even change their format regularly to force upgrades (and royally annoy
    developers and userbase). People can stop yelling at each other about what language they should be speaking and spend their time writing fast, small, elegant implementations of the standard. Kinda like TCP/IP.

    Any hacker with an itch can write their own MPEG4 decoder for Linux, Palm, Amiga, Timex Datawatch, mobile phone, whatever, which breaks the Windows/Mac video hegemony. I know I'm preaching to the converted on /., but it's always good.

    The possible downside lies with the licensing - hopefully we'll avoid a repeat of the Fraunhoffer mp3 fiasco, where they started demanding payment for what was meant to be an open standard.

    shut up man

  8. More Screens, Visual OS by drx · · Score: 1 · on The 3Dsia Project: More Than A 3DWM
    but a 3d environment with some kind of headset where you can _look_ around would probably be enough for me.
    Maybe try connecting more monitors to your workstation, this is a fine enhancement i can recommend to anybody.

    Or for the lovers of distorted text, check The Visual OS and autostereoscopic display from Heinrich Hertz Institute. I has at least some purpose to 3D by showing connections between programs.

  9. heinrich hertz institute by drx · · Score: 3 · on 3D LCD's for Sale

    The Heinrich-Hertz-Institute has released some detailed papers about projection technology like this a long time ago. Especially interesting is the proposal for an operating system using the stereoscopic image.

    The display
    Something about the Operating System for the screen.

    press release about all this.


    It's from 1997 actually

  10. heinrich hertz institute by drx · · Score: 3 · on 3D LCD's for Sale

    The Heinrich-Hertz-Institute has released some detailed papers about projection technology like this a long time ago. Especially interesting is the proposal for an operating system using the stereoscopic image.

    The display
    Something about the Operating System for the screen.

    press release about all this.


    It's from 1997 actually

  11. heinrich hertz institute by drx · · Score: 3 · on 3D LCD's for Sale

    The Heinrich-Hertz-Institute has released some detailed papers about projection technology like this a long time ago. Especially interesting is the proposal for an operating system using the stereoscopic image.

    The display
    Something about the Operating System for the screen.

    press release about all this.


    It's from 1997 actually

  12. heinrich hertz institute by drx · · Score: 3 · on 3D LCD's for Sale

    The Heinrich-Hertz-Institute has released some detailed papers about projection technology like this a long time ago. Especially interesting is the proposal for an operating system using the stereoscopic image.

    The display
    Something about the Operating System for the screen.

    press release about all this.


    It's from 1997 actually