» Login to reply to this

zink-10 (3)   Nov 01, 2006 - 02:51 pm | Edited on Nov 01, 2006 - 02:52 pm

It is a complicated topic but from what I know I will try to explain; In terms of features VC-1 is somewhere between MPEG-4 ASP (XViD/DivX etc) and MPEG-4 AVC (H.264) but the H.264 specification is pretty wide ranging from mobile devices like PDA's to studio broadcasts. As so much is packed into the H.264 spec for retaining detail at lower bit-rates than other codecs it becomes more computationally expensive to decode. At very high bit-rates the difference is less pronounced even compared to good old MPEG-2 which is why you don't really notice that much of a difference between VC-1 & H.264. On the other hand you may find in the future when the studio production tools for H.264 have matured more movies will be using this to pack in more footage to a single disc & the difference vs VC-1 may be more visible . » Login to reply to this  ripfire (430)   Nov 01, 2006 - 03:39 pm I'm quite familiar with the codec themselves. I'm just questioning the difference in quality between the two regardless of bitrate as long as it fits the disc. But since we're talking about HD, I highly doubt the bitrate will be anything lower than 8Mbps. » Login to reply to this

» Login to reply to this

ripfire (430)    Nov 01, 2006 - 12:37 pm

Actually, the quality stands out more on a 1080p 50" screen (or greater). Heck, even with WXGA resolution on my cousin's plasma the difference is obvious as long as it's on a big screen. » Login to reply to this

» Login to reply to this

» Login to reply to this

GX-Alan (78)   Nov 01, 2006 - 11:33 am

I'll look for some 720p sources besides Quicktime trailers; 1080p is what HD-DVD, Blu-Ray, and European H.264 broadcast HDTV is using. I suspect that a fast CPU will be enough. A few things 1) We haven't tested ATI with Cyberlink yet, but historically, NVIDIA has performed better than ATI. 2) Our Cyberlink is a pre-release version which may have a more efficient engine. 3) Without AACS support, it's pretty much a moot point. I've been able to play every Quicktime 1080p trailer with Quicktime Player in software. The real-world HD-DVD tests are definitely tougher. » Login to reply to this

» Note: You need to be logged in to write a comment!