OK, after an afternoon digging around the archives and elsewhere on the net I am still without a clear answer.
EDIT: It appears all you need for VHS is a deck with S-video out, as the signals are recorded separately.
I'm looking to archive a number of old VHS tapes. I'll be playing them out of a professional/broadcast deck that hasn't seen use in decades (crosses fingers). I'm digitizing them into an Avid Media Composer with external I/O (not the Mojo) but it's composite input is typically lacking.
I haven't been all that keen on the EDGE's composite input, but maybe I'm expecting too much.
So, here's what I've come up with as far as worthy contenders for external comb filters:
- RCA DRC8335
impressive zone plate performance, but exhibits flicker and dot crawl
- Holo3DGraph II
- Crystalio II
seems to be the most universally praised
- Entech's SVSI-1
external 2D filter (Composite to SVideo)
- Entech's CVSI-1 external 2D filter (Composite/S-Video to Component)
- Alchemy VPG Visual Reality Engine
- Kramer FC-4044
Am I missing anything? In what order would you rank the above? I'm not only interested in theoretical, but impressions from those who have used one or more of the above.
I don't currently have access to any of them, so cost and availability are an issue.
This archival project means a lot to me as my family had 8mm films etc transferred to VHS some time ago, and now of course the originals are nowhere to be found. All we've got are *ugh* VHS.
Although many people (including within my family) won't see an appreciable difference, I'd like to give future generations a shot in hell of watching some of these events without vomiting. The more detail I preserve, what little there may be, will help things in the end.
As always--thanks for any contributions!
Quote: Originally Posted by DonoMan
IMO the best is getting them onto a PC and processing them with AVISynth using TComb (or the older Guavacomb) or one of many other filters that can accomplish the task (lots of rainbow killers, and dedot, decrawl and some others that can help with dot crawl)
It takes a lot of effort to get things like this as good as possible, no matter what you use. And you will unfortunately never be able to get them back to original quality (though you seem to understand that already).
Great suggestion--thanks. I've used AVISynth extensively. What you're describing though is step #2
. I'm looking for step #1--getting
it digitized with a minimum of dot crawl, ghosting, bleeding etc introduced in the first place.
No doubt there will have to be some clean-up either now or down the road, but what I hope to achieve is to create a digital copy that is as close to the "original" as possible--during ingest
. There's no point in going to lengths to remove things that shouldn't exist in the first place.
A good comb filter will eliminate or greatly reduce dot crawl etc.