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You are here: MacNN Forums > Our Archives > General Archives > Digital Video & Audio Archives > Converting NTSC DV to 24fps.

 
Converting NTSC DV to 24fps.
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Fresh-Faced Recruit
Join Date: Feb 2001
Location: SDF-1
Status: Offline
Oct 13, 2003, 07:21 PM
 
I'm working on a video project.

I have a short movie that was shot in DV.

I want to convert it to 24fps and then back to DV so that it has a simulated film feel to it.

I was wondering how to do this reliably and how to take care of interlacing issues? I've tried this in several different ways and ended up with them pesky interlacing lines.
     
Mac Elite
Join Date: Oct 2001
Location: Internet
Status: Offline
Oct 13, 2003, 09:21 PM
 
You shot interlaced... the only way to get rid of interlaced images is to de-interlace - this is done by throwing out either the top or bottom field resulting in 1/2 resolution of original media (interpolation also has its issues). This is historically a tough problem for videographers that want to make their video look like film. Short answer... they can't. There are a few tricks, but none really work that well.

Getting 24fps... Just export in Quicktime Pro and set it to 24fps.

The only way to get the effect you are looking for on video is to use one of the new progressive scan DV cams. Other than that, I would not waste your time trying to get your interlaced media to look like film cause it wont. If it was easy/possible more people would be doing it.

MacBook Air 11" 1.6Ghz 4GB 128GB Backlit Keyboard, 4S, iPad 2
     
Professional Poster
Join Date: Apr 2002
Location: New York City
Status: Offline
Oct 13, 2003, 11:54 PM
 
There are actually tricks that work. They won't fool experts, but you can go a long way to making it 'feel' more like film. Unfortunately if you've already shot the project you have missed your opportunity to do the most important thing, which is light the project like you would light for film (assuming you didn't). The next steps is to de-interlace and then use QT Pro or Compressor to bump the framerate to 24 fps. There is also an AE plugin called Magic Bullet that is specifically made for making video feel like film. It is very expensive (I think $1k), but I hear it works wonders.

The basic things that make film and video feel different are as follows:

• film is lit differently
• unless the camera you shot with is incredible, film has better color
• film is 24p, not 60i
• film has darker blacks
• film has grain that is tough to simulate (the best simulation of this I've seen was in Shake. Bling bling).
• If you can afford to shoot with film, your production value will be higher in general. you will have nicer gear, better lenses, better sound, better actors, better sets etc.

I'm waiting for this to come out, because it looks like a very affordable way to do some basic tweaking. If you have FCP, this might be just what you're looking for.
     
CIA
Mac Elite
Join Date: Dec 1999
Location: Utah
Status: Offline
Oct 14, 2003, 09:49 AM
 
Pulled this from Post magazine, see if it works for you....:
In FCP, de-interlace the video track with odd fields and then place a 50% transparency of the even fields from the same track over the original odd field de-interlace.
Dosen't make much sense, but might work...
     
 
   
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