Switching on the fly

O

OctoberPro

Member
Has anyone switch from 30p to 24p on the fly? Meaning that you're still recording and switch the scene file dial. Would this have any effect on the recording other than switching frame rates or would you suggest that you stop recording first?
 
Re: Switching on the fly

You can do it; it will continue recording, and it won't break the timecode.

However, some have said that it might be impossible to extract 24p from such a "mixed" clip -- though I was able to do so (I switched scene files accidentally from 24p to 60i). But it may have been a fluke and I wouldn't count on it.

But what are you *planning* to do which would require this? If you don't have to do it, I'd suggest stopping and restarting -- if you want to edit in 24p.

If you're simply going to edit in 60i, then I don't think it's an issue, but I can't imagine what possible advantage switching between 30p and 24p would give you.

So, now I'm curious . . .
 
Re: Switching on the fly

Well I'm shooting my first 24p wedding on Sat. I'm actually shooting the brides walk down in 30p because it's one of the few shots that I know will be slowed down in post. You can get acceptable 24p slo mo in Vegas as long as the camera remains steady, but I won't risk it for a money shot like that. It's all about testing. I've had really nice looking 24p slo mo and really really nasty stuff! Just need to be careful.

Once I get that shot I'm switching over to 24p. My wedding videos are different than most, as in the pacing and editing is faster, and broken down into chapters unlike a documentary.
 
Re: Switching on the fly

If you want to do it in 24p, I suggest using 60i for the bridal walk -- 60i will give you smoother slo-mo in 24p.

To be safe, I'd plan for some cutaway footage immediately before and after the bridal entrance so that you can stop recording and switch between the two. You might be able to get away with an on-the-fly switch, but I wouldn't bet the farm on it -- unless you've experimented extensively and are confident with it.
 
Re: Switching on the fly

I have messed around with switching between F*'s on the fly. I have never had a problem digitizing the footage and have never had a problem with dropouts...I have done this "Test" bunches of times.
 
Re: Switching on the fly

The footage will come through fine -- in 60i. Whether or not it retains the removable pulldown is another question entirely.
 
Re: Switching on the fly

But you don't need the removable pulldown if it is just 24p. We are not talking 24PA, so it doesn't matter if it retains the pulldown..right?
 
Re: Switching on the fly

Um, what are you guys talking about here? You can't switch modes on the fly while recording (at least not on the original DVX100). If you start in 24P and switch to a scene file that's 60i or 30p, the camera will continue recording in 24P, regardless of what the scene file says.

You can sort of switch on the fly when not recording, although going from 60i into 24P produces the long delay... but when the tape's rolling, you can't switch modes.
 
Re: Switching on the fly

[quote author=Kyle Sherman link=board=Events;num=1085668145;start=0#6 date=05/27/04 at 11:27:57]But you don't need the removable pulldown if it is just 24p.  We are not talking 24PA, so it doesn't matter if it retains the pulldown..right?[/quote]

It does if you want to edit on a 24p timeline.

Barry -- I'll try it again, but I'm pretty sure it switched modes.
 
Re: Switching on the fly

I tested it, set 24PN on F3 and 30P on F4, and switched during recording, then imported the whole clip as a 59.94i clip. There's interlaced fields at the beginning, as befits 24PN... and there's interlaced fields at the end, which wouldn't be there if it'd switched to 30P.

The manual also says on page 34: "Even when a scene file has been changed during recording, the progressive mode will not be changed. To change this mode, establish the recording standby mode."
 
Re: Switching on the fly

Well, then I guess it makes this whole thread moot . . . ::)

That explains why I was able to get the 24p out.
 
Re: Switching on the fly

Thanks for the help guys. I would have tried testing myself, but I'm at work right now. I might just go safe and shoot the ceremony 30p instead of going for a switch.
 
Re: Switching on the fly

Barry is absolutely right. While few months back, the discussion was hot conecrening the flicker on panning, one day I accedentally switched from F4 to F5 and I was extremly excited to see that there was NO panning flicker on F5. I thought i had made an extrordianay discovery in the DVX100A....something which even Adam Wilt could not get his hands on to...but my joy and arrogance were both short lived :-[ :-[ wen I read the brochure that one cannot change between these settings 'on the fly' ...
 
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