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Thread: Intel Sandy Bridge VA-API Performance

  1. #11
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    Well I started downloading the raw pngs for ED. I'll see what I can come up with for some samples encoded at various levels. I'll also see about creating a VC1 version as well as possible a WebM version.

  2. #12
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    on the sintel blog they have some 4K stuff

    dont know if this helps with what you are trying to do

  3. #13
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    Test not fair for Nvidia imo,
    Sandy Bridge is the latest greatest from Intel while GeForce 9500 is a (much) older Nvidia product.

    I'd vouch at least for Sandy vs GeForce 460+ to call it a fair comparison, not to mention taking a "more real-world" x264 video as other folks implied.

  4. #14
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    Default Flash?

    If I remember correctly, Flash video is still not accelerated with Intel graphics. How good is Flash video playback on a low end Sandy Bridge?

  5. #15

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    Quote Originally Posted by Michael View Post
    Where is any other high quality sample content that's widely available on HTTP/FTP mirrors and under a free license? I haven't seen such links.
    Try a trailer for a high profile film like Avatar:

    youtube-dl http://www.youtube.com/watch?v=nTtBXpw8db4

    It is considered fair use.

  6. #16
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    Quote Originally Posted by Shining Arcanine View Post
    Try a trailer for a high profile film like Avatar:

    youtube-dl http://www.youtube.com/watch?v=nTtBXpw8db4

    It is considered fair use.
    You tube stuff isn't even moderately close to being demanding. Their HD is really crappy and poorly encoded. It's optimized for web streaming. Also movie trailers are NOT fairuse.
    Last edited by deanjo; 03-07-2011 at 09:45 PM.

  7. #17

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    Quote Originally Posted by deanjo View Post
    You tube stuff isn't even moderately close to being demanding. Their HD is really crappy and poorly encoded. It's optimized for web streaming.
    Did you watch the trailer? The HD quality is not bad and the bit rate is something like 6Mbps. What do you consider to be a good bitrate?

  8. #18
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    Quote Originally Posted by Shining Arcanine View Post
    Did you watch the trailer? The HD quality is not bad and the bit rate is something like 6Mbps. What do you consider to be a good bitrate?
    Yes, I even have the 1080p file.

    General
    Complete name : Avatar- Extended Collector's Edition Trailer- On Blu-ray_DVD November 16.mp4
    Format : MPEG-4
    Format profile : Base Media / Version 2
    Codec ID : mp42
    File size : 55.5 MiB
    Duration : 1mn 22s
    Overall bit rate : 5 655 Kbps
    Encoded date : UTC 2010-10-04 22:58:43
    Tagged date : UTC 2010-10-04 22:58:43

    Video
    ID : 1
    Format : AVC
    Format/Info : Advanced Video Codec
    Format profile : High@L4.0
    Format settings, CABAC : Yes
    Format settings, ReFrames : 1 frame
    Codec ID : avc1
    Codec ID/Info : Advanced Video Coding
    Duration : 1mn 22s
    Bit rate mode : Variable
    Bit rate : 5 522 Kbps
    Maximum bit rate : 12.0 Mbps
    Width : 1 920 pixels
    Height : 1 080 pixels
    Display aspect ratio : 16:9
    Frame rate mode : Variable
    Frame rate : 29.970 fps
    Minimum frame rate : 29.412 fps
    Maximum frame rate : 200.000 fps
    Color space : YUV
    Chroma subsampling : 4:2:0
    Bit depth : 8 bits
    Scan type : Progressive
    Bits/(Pixel*Frame) : 0.089
    Stream size : 54.2 MiB (98%)
    Tagged date : UTC 2010-10-04 22:58:46

    Audio
    ID : 2
    Format : AAC
    Format/Info : Advanced Audio Codec
    Format version : Version 4
    Format profile : LC
    Format settings, SBR : No
    Codec ID : 40
    Duration : 1mn 22s
    Bit rate mode : Variable
    Bit rate : 127 Kbps
    Maximum bit rate : 170 Kbps
    Channel(s) : 2 channels
    Channel positions : Front: L R
    Sampling rate : 44.1 KHz
    Stream size : 1.25 MiB (2%)
    Title : (C) 2007 Google Inc. v08.13.2007.
    Encoded date : UTC 2010-10-04 22:58:45
    Tagged date : UTC 2010-10-04 22:58:46
    It's not very demanding at all, Blu-ray spec has a max of 48mbps combined audio and video, of which 40 can be video, and 20 audio at any one time. This is also a CABAC encoding where a more demanding encode uses CAVLC.

    **** Correction, CABAC is the more demanding on decoding.
    Last edited by deanjo; 03-07-2011 at 10:29 PM.

  9. #19
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    Quote Originally Posted by cl333r View Post
    Test not fair for Nvidia imo,
    Sandy Bridge is the latest greatest from Intel while GeForce 9500 is a (much) older Nvidia product.

    I'd vouch at least for Sandy vs GeForce 460+ to call it a fair comparison, not to mention taking a "more real-world" x264 video as other folks implied.
    http://www.anandtech.com/show/4083/t...-2100-tested/8

    You just lost your ability to vouch for two months

    Michael, try this http://www.sitasingstheblues.com/watch.html.
    I've not downloaded the 1080p version but it is CC.

  10. #20
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    Quote Originally Posted by Michael View Post
    Where is any other high quality sample content that's widely available on HTTP/FTP mirrors and under a free license? I haven't seen such links.
    what , you dont know where to get and use the generic HD park_joy parkrun etc HD samples as used in many a x264 test everywhere, or con cat them togetehr to make longer sequences

    http://media.xiph.org/video/derf/
    http://media.xiph.org/video/derf/y4m..._joy_2160p.y4m etc

    OC there's also the killasample.mkv Here is a link http://rapidshare.com/files/82525583....x264.mkv.html

    and BTW when are you finally going to reset the edit time as you sead you would a long time ago now...

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