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Blu-ray vs. HD DVD Round Two
An anonymous reader writes "A second set of four movies are now available on both high-def disc formats, allowing for another set of head-to-head comparisons — and unlike last month's first round comparisons, Blu-ray fared much better this time. In fact, in comparing Warner's four latest Blu-ray disc releases ('Firewall,' 'Lethal Weapon,' 'Blazing Saddles' and 'Full Metal Jacket') to their HD DVD predecessors, High-Def Digest found three of the four titles to be more or less at picture quality parity. The key difference between these titles and Warner's Blu-ray launch titles last month? On all three of the titles receiving high marks, Warner switched from using the MPEG-2 compression codec to VC-1, which the studio has been using from the start on its counterpart HD DVD releases."
Picture quality is a function of the codec used. Format: irrelevant.
I also have a question... this thing about 32bit vista not being able to produce true HD resolution with movies.... is that some kind of joke? My computer can already play that resolution, what gives? Is the encoding of the movie that cpu hungry? Microsoft has stated that 32-bit Windows Vista will not allow high definition playback because apparently software running on a 32-bit CPU can override the DRM, allowing for illegal copying. It has nothing to do with capabilities of a 32-bit system, it is all about Bill Gates orally pleasuring the movie and record industries. There was a slashdot article on it recently.
But yeah, they should clarify resolution with the same numbers used in computer monitor displays, such as 1280x960. 480p, EDTV, 540p, etcetera does not tell me much and isn't intuitive. But anyone can see 1280x960 is better than 640x480 which is better than 320x240.
480i = 640x480, 704x480, or, in the case of DVD, 720x480, interlaced
480p = 640x480, 704x480, or, in the case of DVD, 720x480, progressive.
540p = 960x540, progressive (1/4 of 1080p)
720p = 1280x720, progressive.
1080i = 1920x1080, interlaced.
1080p = 1920x1080, progressive.
1080p at 60 frames/sec is outside of the ATSC spec, but I think the HDDVD and BD formats support it.... don't quote me. 540p is also outside of the ATSC spec.
Within the ATSC spec, all of the interlaced modes are 30 frames/sec. The progressive modes (except 1080p) can be 24, 30 or 60 frames/sec. 1080p can be 24 or 30 frames/sec.
The thing to note is that except for the 480 modes, the pixels are square. For this reason, you can use the Y value (540, 720, 1080) and multiply it by 16/9 (the aspect ratio of the screen) to get the X value.
Now, my challenge to you: Which is higher resolution, 1920x1080 or 1600x1200? You may not use a calculator.
By comparison, which is higher resolution, 1080p or 720p? You won't need a calculator.
www.wavefront-av.com
Not only that, but H.264 (MPEG-4 Part 10, MPEG AVC) is already an open international standard (and, for those who don't know, one of the three mandatory supported codecs for all Blu-ray Disc (BD) and HD-DVD disc players - MPEG-2 and VC-1 are the other two).
While VC-1 (formerly known as VC-9, the Windows Media 9 (WMV3) codec) has been submitted to SMPTE, VC-1 is still not open, and must still go through the patent pool process, which itself is being administered by MPEG LA.
While WMV3 is an arguably good codec, Microsoft worked hard to get it into things like Blu-ray and HD-DVD, so that it could be in a position to get people to use it as the codec for HD content. Since VC-1 is nothing more than Windows Media Video 9, I guess I don't blame them for wanting it to be everywhere. Then all of a sudden, the same content can easily be repurposed for other things, and work extremely well with other Microsoft- and Windows Media-based products. Genius, on their part.
For what it's worth, H.264 is generally seen as similar in quality and functionality (and better in some ways) than VC-1; it's the official next-generation successor to the MPEG family of video codecs.
And no, to reiterate what's been said elsewhere, H.264 is NOT "Apple's codec". Apple uses and promotes it, but it's hardly "Apple's codec". It's an open international standard that is already heavily used in DTV/HDTV and satellite TV, and is being deployed in more industrial and commercial video equipment every day. Why? Because it's open, and didn't stem from one company. (If anything, Apple's involvement was to pressure MPEG LA to actually have reasonable licensing, so that it would also be able to actually be useful to individual users instead of just commercial users and equipment OEMs, which was positive for everyone involved.)
If people are switching to VC-1 instead of H.264, given that it's not open and came 100% out of Microsoft (and indeed is nothing more than WMV3 plus Windows Media Audio (WMA), you can believe Microsoft has likely had involvement. Every VC-1 user is a huge win for Microsoft and a blow to already-open MPEG standards.