--- On Wed, 12/3/08, Lee Menningen <[EMAIL PROTECTED]> wrote:
> (3) "Editing" cards? I didn't know there
> was such a thing, unless you actually mean a "capture" card.
That'd be hardware from Media 100 or the cards Radius used to make for the
NuBus era Macintosh computers. They put a lot of the processing and rendering
function into the hardware to speed things up. (Dunno how much that's true for
the current generation M100 stuff.)
I have an old Radius 81/110 (110mhz PPC 601 PowerMac 8100 clone in a HEAVY all
steel case) with maximum RAM (264 meg) and the Media 100 NuBus cards. It has
I/O for composite, S-video, and component video and XLR and RCA audio I/O. For
best results it needs professional editing decks with S-video or component
video and time base correctors. The hardware has no frame buffer so the tiniest
little synch glitch makes it stop capturing.
Having been produced before the creation of the HFS Extended file system, video
capture is broken into 2gig chunks. However, when OS 9.1 ins installed, ye olde
M100 version 2.6.2 has no problem exporting to as large a Quicktime file as can
be.
Maximum capture rate (with the dongle that unlocks every hardware feature) is
150K per NTSC frame (PAL slightly higher). It's a perfectly adequate system for
4:3 ratio DVD, though rendering and digital export would benefit bunches with a
G3 upgrade card. G3 upgrade has to be turned off for capture, but that encoding
is 100% handled in hardware. Someone who really knows their way around ResEdit
might be able to overcome the 2gig capture chunk limit.
Before the advent of giant capacity hard drives and multi-Ghz CPUs and gigs of
RAM, video was captured at low quality to save space. The edits were made and
effects applied. The system then used an edit list to prompt the user (or
control a tape library for the big $$$$$ systems) to change tapes to re-capture
at highest quality only the parts actually in the final video. (Assemble
editing, requires decks with timecode support and tapes recorded with
timecode.) It could also capture specific chunks of video, apply the
edits/effects then record the edited video back to tape exactly where the
original was. (Insert editing.)
If I could find a G3 upgrade and a professional Super VHS deck with TBC,
S-Video or component output, and RS-422 serial control port, I'd actually use
the thing. :)
People who've never used this "antique" stuff don't know how easy they have it
with today's practically unlimited storage, super fast computers and
all-digital end-to-end production. ;) Don't complain about the cost, look up
what a fully optioned M100 system cost circa 1996. (I didn't pay that,
"obsolete" equipment is often dirt cheap.)
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