Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!sol.ctr.columbia.edu!lll-winken!sun-barr!ccut!wnoc-tyo-news!scslwide!wsgw!headgw!cvgw!yamanaka From: yamanaka@cv.sony.co.jp (Brian Yamanaka) Newsgroups: comp.sys.amiga.graphics Subject: Re: Single Frame recorders Message-ID: Date: 5 Apr 91 08:22:39 GMT Sender: news@cv.sony.co.jp (Usenet News System) Distribution: comp.sys.amiga.graphics Organization: Sony Corporation, Consumer Video Group Lines: 69 In article <469@tlvx.UUCP> sysop@tlvx.UUCP (SysOp) writes: |In article , yamanaka@cv.sony.co.jp (Brian Yamanaka) writes: |..... |> Currently single frame recording is seen as a fad. Video tape |> technology may not be the best solution, and will be replaced by |> digital recording directly to hard disk (using some sort of |> compression). By storing the animation to disk it is easier to edit |> with guaranteed accuracy. Of course the final animation would be then |> recorded to video for distribution. |> | |If I create animations of several seconds or more in length, how easy would |it be to record them as one long animation? I've seen that VCR's with |the jog-shuttles are coming down in price; I ask the salesmen how it works |for editing, and they don't seem to clear on the specifics. :-) I mean, |they explain that it's for frame-accuracy "for use in editing," but what |good is that accuracy if you can't record? Could you record them, but there'd |be some sort of artifact inbetween the segments? I'm afraid someone |will have to go into a bit of detail on how you would edit (with 2 decks?). |(Currently I have a cheapo VHS VCR without much capability.) I would like |to get a new VCR one of these days anyway (in order to get the Stereo |HI-FI), and might as well try to get something that would be good for this |sort of thing, if at all possible. The consumer decks with jog-shuttle allow for easier editing and location of insert points. However, when switching from play-pause to record some may move a couple of frames. That is why VCR's have search accuracy and edit accuracy. Most can provide very accurate search accuracy (+/- 0 frames), but they cannot provide the same level of edit accuracy. Of greater concern is that to achieve a clean edit, the deck should do some sort of pre-roll. Pre-roll simply put means that a VCR remembers where it wants to insert, backs up the tape, plays until the insert point, and begins recording at the insert point. This requires two very important elements: time-code and flying erase heads. Flying erase heads are becoming a standard feature on most decks (all 8mm VCRs have them), but time-code is currently not available in any VCR. This will change in the future (look for them RSN). | |(I know, just wait until we have better compression and can simply play |the whole thing from the hard drive at once! Wait, I need to get a hard |drive.... :-) ) | |> Of course this is strictly my own opinion (and would probably surprise |> my employers). | |Why would it surprise them? It would suprise them that an employee of the personal video division (whose entire business is based on video tape) is saying that the format should be replaced by digital recording to another type of media. As usual everything I say in no way reflects the views of my employer. |-- |Gary Wolfe, SYSOP of the Temporal Vortex BBS // Amiga! |..uflorida!unf7!tlvx!sysop, unf7!tlvx!sysop@bikini.cis.ufl.edu \X/ Yeah! -- ------------------------------------------------------------------------------ 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 Phone: +81-3-5488-6160 | FAX: +81-3-5488-6469 |Hawaii,Illinois,Japan...what's next?