3968S runs at 1280x720x60fps. There's been some talk in IRC of people being unable to watch such an encode. If you have a moment, consider the following samples (about 10MiB) each:
Standard encode, 1280x720/60p, 8 bit 4:2:0
10bit444 encode, 1280x720/60p, 10 bit 4:2:0
Using software decoding, my computer (2500K@4.0) can easily handle the first, but can barely handle the latter. (EDIT: I was probably incorrect here. My computer can handle the stream, which is what I observed, but I really don't know how much headroom is left.) How about yours? It's no good unless you get smooth 60fps with no framedropping or stuttering.
Also, can your flash player handle the transcode in browser? Mine can't.
Link to video
On or about 2013-06-18, all of these links will die.
Edit: If it's not clear, this would be the first TASVideos publication ever where the
primary encode was bigger than 480p.