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Real-Time Playback Via Decklink
Reading thru Vegas 6 hype, it seemed not entirely clear whether or not most transitions and many effects (including color correct, speed, reverse, brightness/contrast et al) would playback real-time thru a Decklink card to an ntsc/pal monitor via sdi, component, s-vid or c-v. Anyone know the facts on that issue? Thanks in advance.
Bill Buchanan
Buchanan Film Co. -
3 Replies
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I think the answer is a qualified yes. If my understanding is correct it works very much like the firewire-to-NTSC previewing you are already used to.
This is just a barely-informed guess, so I’d suggest before you make any decisions you call a Blackmagic dealer like Promax and see what they have to say.
I’d be interested in knowimg more too, so post your findings.
Ron Grandia
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Ron:
I should have mentioned I already have a Decklink Extreme card, running PremPro1.5. But I’m only looking into Vegas at this point. PremPro does provide real-time playback of dissolves ONLY to ntsc/pal monitor via Decklink of 8 or 10-bit uncompressed files. The Decklink does not provide playback of (DV) files when a PremPro project is setup for DV (as opposed it being setup as a 8 or 10-bit uncompressed ntsc or pal or HD project (something Adobe ought to reconsider). The only way to playback DV project timelines is through your graphics card with an s-vid out or whatever that will feed a ntsc/pal signal to a TV monitor. This is why I’m interested in Vegas 6’s real-time features working with a Decklink card.
Bill Buchanan
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I see. Well here is what I would expect from Vegas: (Pulled directly from my backside, so buyer beware.)
It SHOULD work similar to realtime DV preview via firewire. Those who work with Vegas would know that means that you will get a surprising amount of realtime preview until the computer can no longer handle the load, at which point Vegas begins to dumb-down resolution and/or frame rate in preview depending on your settings. So yeah, it’s RT, but it’s not always perfect. But like I said, I think you will be amazed at what it does all by itself.
The grace with which your computer handles the tasks are mostly a function of your memory, processing power, and the speed of your storage. Vegas 6 is reportedly much more able to take advantage of HT and Multi-processor environments, but the jury is out on this one. (Give us all a few days to deliberate.)
I do a lot of SD work on a 2.8 HT machine with IDE raid and a gob of RAM – and I often sit and render sections to get a good look at my work. Other times I am perfectly happy letting the machine drop to 15 FPS, or with trickier sequences scrubbing the TL to see my changes and letting it all render out when I’m through. I’m due for an upgrade pretty soon, and am hoping for strides in multi-processing with the new rev of Vegas.
That’s my best guess.
Ron
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