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Delivering 24 and 25 FTS

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Ben Edwards
Delivering 24 and 25 FTS
on Aug 4, 2014 at 5:34:55 pm

Hi, I am dealing with a film where the source material has lots of different framerates. The delivery is 2k cinema (24fts) and DVD (UK PAL 25fts). The edit is in Premiere so I can export 24 or 25fps. My gut feeling is I should grade at 25 and then use Premiere to downsample the final grade to 25 for DVD.

Thoughts?

Ben

--
Ben Edwards - Freelance Picture Editor
http://www.funkytwig.com

i5 3550 3.3Ghz, Windows 7 / Mac Lion, Nvida 550 Ti, 16GB Mem


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Marc Wielage
Re: Delivering 24 and 25 FTS
on Aug 5, 2014 at 5:13:38 am

The Optical Flow conversion in Resolve should theoretically be able to handle speed changes with better quality than Premiere, but I think that's a subjective call.

Me personally, I'd much rather have the entire project already be converted to one speed (including slo-mo, speed ramps, etc.) before it's handed to me, just to avoid any potential issues. I'm generally concerned about sync timing for the sound mix when the color-corrected files are locked with sound for delivery. Bear in mind they have to do a 4% (or sometimes a 4.1%) speed-up for 24 or 23.98 sound files to 25fps, which may require pitch-shifting and other kinds of processing.

The worst-case scenario is when you have mixed-field rates between 23.98, 24, 25, and 29.97, particularly when the 29.97 material was sourced from film at 23.98. That's a big mess. I just watched a CNN The Sixties special over the weekend where they very expertly mixed a lot of formats like this and did a flawless job, particularly in de-interlacing the interlaced footage. It's great when this stuff is done well.


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Margus Voll
Re: Delivering 24 and 25 FTS
on Aug 5, 2014 at 9:46:21 am

Like Marc says it is good idea to have one frame rate to avoid sync problems.

Later on you just convert what ever you need and for feature work sound guys usually
know how to approach it.

Important question is how the edit is done.

I had a feature that was shot on red and 25 fps.
For some reason it was edited on 24 FPS.
There was some ramps and there was some VFX. And some was on 24 fps and some on 25.

So you could imagine the mayhem i had to go trough conforming and finalising that
project.

So if you can look in to the future and foresee the workflow that gives you less problems
that would be the way to go. Of course you have to talk it over with sound guys.

--

Margus

http://iconstudios.eu
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Ben Edwards
Re: Delivering 24 and 25 FTS
on Aug 5, 2014 at 10:13:15 am

Première seems to handle the mixed framerate/frame size footage fine. We watched the whole thing (24fts) on a 2k projector and it looks fine. What had actually been done was everything had been converted to 24fts DNxHD (it was actually a highish bitrate mp4 we we watched. This is not the issue.

The issue is that we now need to grade and create a 24 and 25 fts version (2k cinema/DVD). The project involved 70 artists and film-makers each making 1 minute segments which are then edited (sequenced being a better word). none know anything about the others except they are a single shot. This is to raise money for a volunteer run cinema in Bristol,UK called The Cube. The DVDs have to be good because part of the funding was to sell 70 limited edition DVDs.

So my question is should we (a) go back to the originals, export a 25fts version, grade that and then use the 25fts version and downscale to 24.

Or (b) grade at 24 and up scale to 25 to get the two versions.

Or (c) Grading the mixed frame-rate/framesize material in Resolve may be another option. Can it then export individual clips in there original frame-rate or can we export a 24 and 25fps version.

Lastly am I worrying unesseserily. Will the final quality of the DCP and DVD bothe bee fine, its not as if its Red or Arri footage (it is a mixture ranging from smart-phone to prores.

Ben

--
Ben Edwards - Freelance Picture Editor
http://www.funkytwig.com

i5 3550 3.3Ghz, Windows 7 / Mac Lion, Nvida 550 Ti, 16GB Mem


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Margus Voll
Re: Delivering 24 and 25 FTS
on Aug 6, 2014 at 6:52:15 pm

If you go to 24 or 25 does not matter id all the other material is
variable in many ways. Just see that it works out for you and
for the sound guys.

You just have to see which way works you best and use it consistently.

--

Margus

http://iconstudios.eu
https://vimeo.com/iconstudioseu/videos

DaVinci 10, OSX 10.8.5
MacPro 5.1 2x2,93 24GB
GUI 4000 / GPU GTX 780
DL 4K
Eizo Color
Scope Box
Full Ligthspace CMS


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