Originally Posted by sfogg
Are you asking about 24 progressive or segmented frame?
24 frames per second. I believe on a 1080P projector we are talking progressive.
Friday, July 19, 2002
New Production Mastering Standard Emerging: 1080P/24
by Larry Gerbrandt
TV stations, especially in the smaller markets, are dragging their heels on converting to digital transmissions and the amount of content in high resolution HDTV format is still very limited and squabbles continue over which transmission method is best.
But with much less fanfare and publicity a standard has emerged for mastering content that maximizes the potential for future exploitation and converts to dozens of digital formats around the world with minimal loss quality (currently a real problem when converting from NTSC to PAL and other international standards).
The format is known as 1080P/24 and it wasn't one of the original 18 formats sanctioned by the FCC for broadcasters to use. But it offers the highest resolution (1080 lines), is progressively scanned and is based on the same frame rate--24 frames per second--used by the motion picture industry. 1080P/24 is quickly becoming the standard for mastering content and especially for post-production.
It is also the format used by the new Cine-Alta digital cameras developed by Sony and Panavision. This system was used as the primary camera for the latest Star Wars movie (Episode II: Attack of the Clones) and is increasingly being deployed to shoot prime-time episodic television shows and commercials.
Mastering on digital tape can save as much as $50K per episode in film stock, processing and film-to-tape transfer costs and speeds the post production process and cinematographers are learning that they can get film-like "look" from digital capture and also create new visual styles at a lower cost vs. traditional film.
But the real beauty of 1080P/24 is that it can then be transferred to virtually every format in use worldwide with high quality results, without the problems of digital artifacts (a major problem when mastering in 720P/30 or 1080I/60).
Compatible formats include 1080I/60 (used by CBS, NBC, HBO and PBS), 720P/60 (used by ABC), 480P/60 (used by Fox), NTSC 525/60 (the current analog standard), PAL 625/60 (used in Europe), 1080I/50 (used in Australia and other markets) and 35 mm film formats. It is also an example of letting the marketplace sort things out, with minimal regulatory interference. The marketplace may not always make the best choice (Beta was better than VHS) but it usually is a pragmatic and economically efficient choice.