Join Date: Jan 2002
Location: Washington State
Mentioned: 6 Post(s)
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Here is what we know from real experience. With clean sources, and three pass encoding for HD DVD/BD (i.e. a human involved), we can for 1080p content get down to 9 to 10 mbit/sec. But that is for consumer delivery at 4:2:0. Up that to 4K and 4:2:2/4:4:4, and auto-encoding, the math just doesn't work. Yes, if you have uniform parts of the image, you don't need twice as much. But there is no guarantee of that.
As to wavelets, again, I have not seen it applied with interframe compression. Intra works but of course, when pusehd softens the image. There has been research into interframe compression using wavelets but computationally, it is orders of magnitude more difficult than AVC/VC-1. And the gains are actually not that good.
So while I leave the door ever so slightly open that they have something new, there is no way to achieve those rates for studio work and for professional eyes.
The "2-hour" thing is likely a marketing claim. I suspect they will use a very high-speed red laser drive, and likely get 20 to 30 minutes. Why I would bother to use optical when I can use Flash, is beyond me. For this application, it makes no sense to me. Maybe they didn't predict Flash prices to drop so low when they started the project...