This is not necessarily conclusive. But if you want a preview of a 4k clip,

go here for a lower resolution downsample:

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http://www.dailymotion.com/video/k78sCL2G8HWzlYbcfkM

And download the 10 sec/20 Mpbs clip here:

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Report back with your results (framerates, etc), here, if you have a 4k monitor or TV to watch it on.

This is not the full high bitrate version.

You can watch the clip on lower resolution monitors, but of course with everything scaled down, you won't notice much of a difference.

We've tested it on 1080p monitors, and it ran without glitches on an I5 without a graphics card. Also viewed on an ultrawide monitor (Slightly scaled down, with an Nvidia quadro, had no problems), full screen was fine.

Video - 23.976 fps

Team Negative1