-
24p or 60i?
I’ve been given a couple of short SD files. The files are about 5 minutes in length and a mix of archival home video and recently shot interviews. FCP recognizes the files as NTSC 60i. However, upon inspection in the viewer:
1. during the interviews I’ve got 3 progressive frames followed by 2 interlaced frames.
2. during the archival home video, I’ve got all interlaced frames.If i put the file into a 60i timeline, in the canvas, it’s the same. If I make that timeline a progressive frame timeline:
1. during the interview I’ve got 4 progressive frames followed by the 5th frame which is a duplicate of the 4th frame.
2. during the archival footage, every frame is progressive with no duplicates.QUESTION: Does that mean that the interviews were shot 24p or 24pA?
QUESTION: Should I edit this in a 30p timeline, or do some sort of conform to 23.98 and edit in a 23.98 timeline? I assume that if I conform, then my archival footage will look a bit weird with skipped frames, but my interview footage will look ok.
Final delivery will most likely only be for the web, in which case the progressive frames are perfect. However, whoever edited this didn’t know what he/she was doing and didn’t treat his footage properly to mix the frame rates.
-trevor ward
Red Eye Film Co.
http://www.redeyefilmco.com
orlando, fl -
1 Reply
-
From your descriptions, one is shot 24p with standard pulldown and the other us shot standard interlaced 30fps interlaced (60i). Why are you making a progressive timeline? Because of the web? As with all thongs, work natively until delivery and then convert.
You should edit in a interlaced TL then deinterlace for the web. You’ll really need to deinterlace even if you’re working in a progressive TL because working in a progressive TL is only going to affect rendered added material like transitions and moving overlays.
If you need to do a few tests. But you should be working on 30fps not 24. Adding pulldown is standard practice. Removing frames from 30fps is not a good look.
The reason 24fps has become such an international standard is that it adapts to NTSC or pal easily. A slight speed up conform makes it 25fps pal, and adding a simple pulldown creates great NTSC interlaced 30fps. But 30fps doesn’t convert to 25 or 24 very well and 25 doesn’t convert to 30 very well. 24 is the beat choice for mass market shooting.
Reply to this Discussion! Login or Sign Up