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Thread: AMD Releases Open-Source UVD Video Support

  1. #281
    Join Date
    Oct 2009
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    2,137

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    Quote Originally Posted by smitty3268 View Post
    He's probably running mpeg2. I think that indicates the shader based decoder.
    I already pointed out that it indicates that it is only capable of mpeg2 decoding, which means its definitely NOT UVD. Mpeg2 really shouldn't take up 30% CPU, even 1080p, except maybe on a crap CPU like an atom.

    Which suggests, of course, that even if he has some shader based decoder available, he's still most likely using straight software decoding, and probably decoding some variation of mpeg4. After all... there aren't very many sources of HD mpeg2.

  2. #282
    Join Date
    Jul 2009
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    Germany
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    Quote Originally Posted by smitty3268 View Post
    He's probably running mpeg2. I think that indicates the shader based decoder.
    The information string is the same with UVD, but "Decoder capabilities" lists for example mpeg4:

    Code:
    Decoder capabilities:
    
    name               level macbs width height
    -------------------------------------------
    MPEG1                16  9216  2048  1152
    MPEG2_SIMPLE         16  9216  2048  1152
    MPEG2_MAIN           16  9216  2048  1152
    H264_BASELINE        16  9216  2048  1152
    H264_MAIN            16  9216  2048  1152
    H264_HIGH            16  9216  2048  1152
    VC1_SIMPLE           16  9216  2048  1152
    VC1_MAIN             16  9216  2048  1152
    VC1_ADVANCED         16  9216  2048  1152
    MPEG4_PART2_SP       16  9216  2048  1152
    MPEG4_PART2_ASP      16  9216  2048  1152

  3. #283
    Join Date
    Oct 2008
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    3,212

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    Quote Originally Posted by droidhacker View Post
    I already pointed out that it indicates that it is only capable of mpeg2 decoding, which means its definitely NOT UVD. Mpeg2 really shouldn't take up 30% CPU, even 1080p, except maybe on a crap CPU like an atom.

    Which suggests, of course, that even if he has some shader based decoder available, he's still most likely using straight software decoding, and probably decoding some variation of mpeg4. After all... there aren't very many sources of HD mpeg2.
    Well, i guess i was assuming that he had tried out playing videos before and after he tried installing the vdpau support, and saw a big difference. Which suggested that he was getting the shader based decoder, rather than nothing, because in that case he wouldn't have seen any difference. But i guess it's possible he didn't even try out the software decoding to compare it.

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