Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!uwm.edu!linac!att!pacbell.com!tandem!zorch!amiga0!mykes From: mykes@amiga0.SF-Bay.ORG (Mike Schwartz) Newsgroups: comp.sys.amiga.graphics Subject: Re: Single Frame recorders Message-ID: Date: 29 Mar 91 09:12:40 GMT References: Organization: Amiga makes it possible Lines: 59 In article yamanaka@cv.sony.co.jp (Brian Yamanaka) writes: >In article <5256@mindlink.UUCP> Ken_Cooper@mindlink.UUCP (Ken Cooper) writes: > >| >|Brian YAMANAKA writes: >| >|(Personally I'm waiting for digital recording to become available on the >|Amiga) >| >|--------- >| >|So this means D1 or D2 format (or somesuch), which then puts us back to >|thorough-bred prices :) > >I'm not talking about D1 or D2 but direct recording to hard disk as >shown by Super Mac at MacWorld. This method uses high speed hard >drives and JPEG compression to get full-motion video at 24 fps. Of >course this isn't 30 fps, but 24 fps is what the motion picture industry >uses. > >Having the video stored on hard disk allows editing to be done at the >frame level digitally withou generation loss. For single frame >animation this seems to be the best answer. JPEG hardware is not that >difficult to make and as hard drive capacities continue to grow and >prices continue to fall, this may be just the answer. > >Of course then the Amiga would need 24 bit color capability (which is >already becoming available) and a willing manufacturer. > >-- >------------------------------------------------------------------------------ > Brian YAMANAKA (aka The VISCA dude) |"I knew I should have made that > Sony Corporation, Personal Video Group | left turn at Albuquerque." > Email: yamanaka@cv.sony.co.jp | -Bugs Bunny >------------------------------------------------------------------------------ I suspect that we will see lots of 24 fps animation coming from CDTV programs in the not so distant future. One company that I know of already has a game on the market that does 12fps on the NEC Turbografix. The animation is done in a window smaller than the screen, and is slow. The reasons for this is in the limitations of the NEC machine itself. Considering that the Amiga hard disks can transfer 2MB per second, you get 87381 bytes per 24th of a second. This is more than enough to get you full frame HAM/SHAM/etc. animation from hard disk. For 6 bitplane HAM mode animation, it would require 69 Megabytes per minute of video (690 for 10 minutes). At 24 frames per second, there is a lot of time to allow for the CPU to perform decompression. If you get 50% compression, you could easily fit an entire 30-minute TV show on one hard disk. I am talking about existing/older Amiga technology, but it is still quite impressive. -- ******************************************************** * Appendix A of the Amiga Hardware Manual tells you * * everything you need to know to take full advantage * * of the power of the Amiga. And it is only 10 pages! * ********************************************************