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Activity Forums VEGAS Pro 1080 60p downloadable files

  • Dave Haynie

    November 8, 2010 at 10:11 am

    Stuttering on AVC playback rarely if ever has anything to do with the bitrate. It’s the decoding complexity… AVC is more complex than pretty much anything else you’re going to run into. WMV/VC-1 is different enough that it’ll play on systems that might be a bit challenged by AVC.

    So I tried the MP4 version on my system… smooth as silk in Windows Media Player. This is a Core2 Quad System, Q9550 CPU, 2.83GHz, nVidia 8800GT CPU… nothing all that recent. The CPU peaked at 17%, but stayed around 12% most of the time. This is playing fullscreen on a 1200p monitor. Played it again in Splash Lite, pretty much identical results. I shut off GPU acceleration, played it in Splash Lite… still silky smooth, but now peaking at about 50% CPU use. And man… going to 10Mb/s sure crapifies the video, compared to the usual 28Mb/s, probably more than usual, since this is high motion footage.

    I tried it in VLC… that’s usually the way to get bad AVC playback. It stuttered a little, but actually not too shabby, and peaked at about 45% CPU. VLC is probably better than usual — I think higher bitrates, not the AVC decoding pre se, are its main issue.

    Let’s see.. played it in Nero MediaHub (replacement for Nero Showtime). It jumped badly with video acceleration enabled… that’s weird. Worked just fine, with about 45% CPU use, with acceleration disabled. Played it in QuickTime… 60% CPU, worst of all, but just as smooth as the others, all 60fps.

    I tried the MP4 in WMP on my laptop (Quad Core2 Duo, 2.4GHz, nVidia 8600M GPU)… played smooth as silk, all 60fps. Peaks at about 60% CPU… seems a little high for GPU-accelerated playback, but whatever… it played just dandy.

    You definitely have a problem somewhere.

    -Dave

  • Dave Haynie

    November 8, 2010 at 10:13 am

    Stuttering on AVC playback rarely if ever has anything to do with the bitrate. It’s the decoding complexity… AVC is more complex than pretty much anything else you’re going to run into. WMV/VC-1 is different enough that it’ll play on systems that might be a bit challenged by AVC.

    So I tried the MP4 version on my system… smooth as silk in Windows Media Player. This is a Core2 Quad System, Q9550 CPU, 2.83GHz, nVidia 8800GT CPU… nothing all that recent. The CPU peaked at 17%, but stayed around 12% most of the time. This is playing fullscreen on a 1200p monitor. Played it again in Splash Lite, pretty much identical results. I shut off GPU acceleration, played it in Splash Lite… still silky smooth, but now peaking at about 50% CPU use. And man… going to 10Mb/s sure crapifies the video, compared to the usual 28Mb/s, probably more than usual, since this is high motion footage.

    I tried it in VLC… that’s usually the way to get bad AVC playback. It stuttered a little, but actually not too bad, and peaked at about 45% CPU. VLC is probably better than usual — I think higher bitrates, not the AVC decoding pre se, are its main issue.

    Let’s see.. played it in Nero MediaHub (replacement for Nero Showtime). It jumped badly with video acceleration enabled… that’s weird. Worked just fine, with about 45% CPU use, with acceleration disabled. Played it in QuickTime… 60% CPU, worst of all, but just as smooth as the others, all 60fps.

    I tried the MP4 in WMP on my laptop (Quad Core2 Duo, 2.4GHz, nVidia 8600M GPU)… played smooth as silk, all 60fps. Peaks at about 60% CPU… seems a little high for GPU-accelerated playback, but whatever… it played just dandy.

    You definitely have a problem somewhere.

    -Dave

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