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Old April 11th, 2007, 02:45 PM   #1
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over/undercrank in DVCPro25??

We're getting an hvx200, and are wondering if you can over and undercrank footage when recording in Dvcpro25 onto tape?

I've read that when doing this recording onto P2, it works great, only recording frames that are used, thus saving space. I realize that same principle wouldn't work with tape, but maybe the same look can be acquired?

thanks
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Old April 11th, 2007, 03:27 PM   #2
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Sorry, no. Tape is always running 29.97, even if you shoot 24p or pA.
The slo-mo you can do with P2 cards is reason enough to have at least one card.
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Old April 11th, 2007, 03:38 PM   #3
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thanks, Mike. I had a hunch that was the case.

We're going to be picking up some p2 cards shortly, but seems everyone is currently out of stock! Might have something to do with the price drop in 8 gig cards and possible impending introduction of 16 gig cards.

thanks!
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Old April 11th, 2007, 10:53 PM   #4
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Can't shoot dvcpro25 to tape anyways.

What you can do is shoot 720pn overcranked and then dub to minidv tape in camera.

Jason
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Old April 12th, 2007, 02:48 PM   #5
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Exactly. You can get what you want, which is variable frame rates and slow-mo (or fast-mo) footage on the tape. You just have to go through an intermediary process -- you'd have to record it to a P2 card first, then execute an in-camera dub/downconvert. The end result is that you'll have film-style frame-accurate slow-motion footage on the tape.
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Old April 12th, 2007, 03:12 PM   #6
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Quote:
Originally Posted by Jason E. Ramsey View Post
Can't shoot dvcpro25 to tape anyways.
Yes you can, dvcpro25 = DV25
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Old April 12th, 2007, 10:39 PM   #7
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Quote:
Originally Posted by Bennis Hahn View Post
Yes you can, dvcpro25 = DV25
Identical bitstream & color sampling, but not EXACTLY the same thing. You can't record DVCPRO25 to tape on the HVX, only DV.

Fortunately for most of us, I would guess this little detail doesn't matter. Just pointing it out, for the sake of accuracy.
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Old April 20th, 2007, 11:56 PM   #8
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Quote:
Originally Posted by Bennis Hahn View Post
Yes you can, dvcpro25 = DV25
Not exactly, and (in PAL) not at all.

In the US, both DV and DVCPRO25 use identical compression and color sampling; the main difference between them would be the tape they were recorded to (DVCPRO = metal particle, DV = metal evaporated). But there's also some flags in the data stream in DVCPRO that aren't in DV; early DVCPRO gear won't accept a DV data stream through firewire. If working for a news station or someone that's expecting to be taking your data stream through firewire to their DVCPRO decks etc, you'd be wise to match formats by choosing DVCPRO in your HVX.

In the PAL camera it's very different. DVCPRO = 4:1:1 even in PAL, whereas DV = 4:2:0.
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Old April 21st, 2007, 11:54 AM   #9
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But even if it were the same, only DV can be recorded to tape.
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