DV50 codec over firewire

[Shane Ross]

[Tom Dunn] “Is it possible to capture DV footage via Firewire using the DV50 codec?”

Nope…need a capture card. Capturing via firewire captures native formats only….besides that HDV as ProRes via firewire deal. That is unique.

Shane

Littlefrog Post

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[Tom Wolsky]

But even that ProRes deal requires a box, doesn’t it? Don’t you need the AJA IoHD for that?

All the best,

Tom

Class on Demand DVDs “Complete Training for FCP6,” “Basic Training for FCS2” and “Final Cut Express Made Easy”
Author: “Final Cut Pro 5 Editing Essentials” and “Final Cut Express 3.5 HD Editing Workshop”

[Shane Ross]

[Tom Wolsky] “But even that ProRes deal requires a box, doesn’t it?”

Nope…

https://library.creativecow.net/articles/poisson_chris/hdv-prores.php

Shane

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[Herb Sevush]

Tom –

As others have stated, you can’t upconvert via firewire.

My question for you however is why will you re-conform the DV50 material? DV50 is basically identical to DigiBeta, and unless you are doing heavy compositing in 10Bit I don’t see the advantage of going to uncompressed. We went from Beta to DV50 2 years ago for all our SD Broadcast work and it looks great.

Herb Sevush
Zebra Productions

[Chris Borjis]

is DV50 = DVCPRO?

In my opinion DVCPRO looks no different than BetaSP.

I would not necessarily consider it Digibeta equal though.
There is definitely more noise in DVCPRO/BetaSP image
than native aquired Digibeta. Though its very subtle at that.

[Uli Plank]

There’s DVCPro25 and DVCPro50. The latter comes pretty close to DigiBeta.

Regards,

Uli

Director of the Institute of Media Research (IMF) at Braunschweig University of Arts

[Tom Dunn]

Thank you for your answers. Regarding why I would conform to uncompressed: I am seeing a bit of noise in the shadow areas of some of my shots (lot of footage in low-light situations) that I hope I can eliminate by not compressing my footage. I know that technically, DV50 compression at 4:2:2 and roughly 2:1 should not be visible to the human eye, so before I go to the work of recapturing, I will review my camera masters to see if the noise exists there or if it was introduced during capture.

Tom

It’s ALL ball bearings these days.

[Herb Sevush]

Chris –

DV = DVCAM = DVCPRO 25, a digital format sampled at 4:1:1

DVCPRO 50 is sampled at 4:2:2, with twice the file size of DV.

DVCPRO 50 is to DigiBeta as DVCPRO is to DVCAM. That is, as Panasonic is to SONY.

Personally I don’t think DV is as good as BetaCam, which is not sampled at all but rather an analog format. I’d place BetaCam’s quality between DV25 and DV50, but that is somewhat subjective. And then, of course, there are the dropouts.

Herb Sevush
Zebra Productions

[Shane Ross]

when you capture DV, you aren’t compressing the footage. It is a simple file transfer. The 4:1:1 DV compression (5:1) was already done to the tape. That compression cannot be undone.

Shane

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[Bret Williams]

Digibeta is 2:1 and DV50 is 2.5:1. A bit of a difference. Plus, in this situation, it’s not native DV50, it’s down a generation with the artifacts of analog noise thrown in. In other words, Betacam is a noisier format than digibeta. Betacam further compressed to DV50 is even noiser than digibeta again, and compressed more as well. Taking the betacam in uncompressed would be a good idea if you’re looking for the best quality in this instance.