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- Newsgroups: rec.video.production
- Path: sparky!uunet!noc.near.net!usenet.ccur.com!mark
- From: mark@westford.ccur.com (Mark Thompson)
- Subject: Re: Supermac's DigitalFilm Video capture and export board
- Message-ID: <1992Dec23.155757.1456@westford.ccur.com>
- Sender: usenet@westford.ccur.com (UNIX News)
- Organization: Radiant Image Productions, Merrimack NH.
- References: <33800010@hpfcmgw.FC.HP.COM> <1992Dec18.171008.22140@westford.ccur.com> <1992Dec23.065501.19144@mnemosyne.cs.du.edu>
- Date: Wed, 23 Dec 1992 15:57:57 GMT
- Lines: 42
-
- >I wrote:
- >>At a resolution of 720x486 and a 10:1 compression ratio, thats 1.8 GB/minute.
-
- Oooops. Will McCown at Rhythm & Hues pointed out a teensy error. I forgot
- to factor in the actual 10:1 compression. The correct number is 180MB
- per minute. Sorry.....
-
- nwickham@nyx.UUCP (Neal Wickham) writes:
- >EditMaster's least
- >compression is 15:1 which they claim is visually lossless and of 3/4 inch
- >Betacam quality.
-
- I would agree that 15:1 is nearly visually lossless and probably exceeds
- Beta SP quality by a good margin. But depending on your source image, I
- would bet that even 20:1 would suffice in many cases to achieve Beta SP
- quality.
-
- >I *think* 25:1 is in the SVHS catagory and would suit many needs and with
- >it you'll get 833 sec per Gig or about 14 min.
-
- I would say more like 30:1 but this is all very subjective source dependant.
-
- >>I for one would not compress
- >>less than 20:1. You will lose FAR more going to video output than you do
- >>in a 20:1 jpeg compression.
- >
- >...you mean "more" than 20:1??
-
- I meant less, but after looking very carefully at some very "jpeg stressful"
- images, I think I would do my animation masters at between 15 and 20 to 1
- depending on video format destination.
-
- >You could get an EditMaster and a Video Toaster for about $5000. :)
-
- Add a Sunrize AD516 for $1500 and you really have an amazing setup.
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