60i/24p deinterlace issue

Ralph D

Ralph D

Active member
I've done searches about this and have learned quite a bit, but I still need to confirm something.

Here's my situation. I have footage for a short film that was shot on the DVX in 24p and 60i (to slow down in FCP 6 to 40%). The project has been completely edited in a 29.97 timeline. It looks great on my TV but I just now noticed some interlacing when I watched the film being projected. The goal is to put this project on DVD, have it projected at festivals and perhaps put it on the internet.

I now know that it should've been shot in 24pA. I read, however, that I can use Cinema Tools to reverse telecine and conform the footage I have to 23.98 so I can use a 23.98 timeline, but I would have to re-edit the film. Does that mean I can only do this on the raw, captured footage and not the footage that has already been edited in the 29.97 timeline? What about the 60i footage and the already edited audio?

Is this the only way to solve the problem, aside from using a filter and losing resolution as I've read?

Any help would be greatly appreciated. Thank you.
 
You should be able to use Cinema Tools or a program like DVFilm Maker to reverse telecine and remove the pulldown from the 23.976 footage, but the 60i footage that was slowed down will skip because fields will be removed and blended.

Are there a lot of 60i slow down shots? It would probably be best to redo those slow down shots individually to get the best motion. So you would reverse telecine you final movie and then put it in a 24p project. Then you'd have to bring in your 60i and redo the slow mo at 24p. This will give you the best motion without having to redo you entire edit.

In the future, it's always better to edit at 24p because it's the most flexible fps to have since it can be turned to NTSC with a pulldown and PAL with only a slight speed up.

Hope this helps,
Andy
 
Thank you for the response Andy.

There are a couple of slow down shots, but nothing major. I can slow them down again if that's what will work.

So, if I use Cinema Tools, can I just reverse telecine and conform the edited video that's in the 29.97 timeline so it can go in the 23.98 timeline? No having to start from scratch and edit again?
 
To be honest I think you'll find the work incredibly tedious at this point. It means taking every original captured clip- not edited clip, opening in CinemaTools, manually finding your a-frame and reverse telecineing. And then cutting and pasting the entire sequence into a 23.98 sequence and resyncing all your audio/finesse every edit which will have now shifted from the new timeline. It's sort of like saying- here's a completed building, now make every floor 2 feet shorter. :) Anyways- here's the CinemaTools workflow:

http://www.kenstone.net/fcp_homepage/pana_24p__cinetools.html

-Noah
 
I'm confused as to why you need it to be on a 24 frame timeline? Why can't you have it be 24p at 29.97?
 
markyf said:
I'm confused as to why you need it to be on a 24 frame timeline? Why can't you have it be 24p at 29.97?
Click to expand...

Because viewing it on any but an interlaced tv will have the interlaced lines from the pulldown show up. If its 24p with a pulldown and the tv/dvd player can remove the pulldown then it will have stuttered motion for his 60i slowdown footage.

Sorry, DVXmusic, I'm not experience with Cinema tools. If it does a reverse telecine and can process the entire movie at one then there's not need to use a program like DVFilm maker. But you still have to reedit your 60i slow motion footage into the 24p timeline. Then when you are done you add a pulldown back in to get it to be 29.97 and it will play fine on any NTSC DVD or TV and even progressive computer monitor via dvd because the dvd player will remove the pulldown. Right now, you probably see the pulldown when projected because it's not consistent and the projecting device can't remove it correctly.

Best,
Andy
 
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