FCP question about handling NX 1080 30p footage at DVinfo.net

John Vasey · May 17th, 2010, 05:12 PM

I shot some test footage in Santa Monica over the weekend at 1080 30p at the highest quality. I used FCP 6 Log and Transfer to convert the footage to Pro Res.

When I imported the clips onto the timeline, FCP wanted to changed the sequence settings to match the clip and I said yes. When I later checked the sequence settings, here is what it said:

1920 x1080
aspect ratio: HDTV 1080i (16:9)
pixel aspect ratio: square
field dominance: none
29.97
Apple Pro Res 422
100% quality
48Khz, 16 bit audio

My question is this...when you are recording with the NX5U at 1080 30p, is it being laid down an interlaced file on the card? (as the interlaced sequence setting on the FCP timeline seems to indicates)

Is this the normal workflow for shooting and editing projects that started out as being recorded in 1080 30p?

Perhaps I was getting confused because I thought I would be editing in true progressive frames like you can in 24 fps footage.

I just wanted to be sure this footage was coming in the way it should and that FCP was handling it correctly. The reason for shooting in 30p was for the smoother motion.

If any one can share advice on this issue, I would appreciate it.

Thanks,

John

Matt Lawrence · May 18th, 2010, 09:33 AM

All frame rates are native with this camera, so there is no pulldown on the card. The 1080i aspect ratio, I believe, is the only preset that matches this camera's footage. I could be wrong, but I don't think the "i" actually has any affect on whether you sequence is interlaced or not, it just refers to the HDTV standard. As long as you set the sequences in your project by dropping clips in the timeline (and answering yes when it asks to use that clip's settings), it will grab the right settings. You can check this afterwards by right clicking on a sequence in the browser and choosing Item Properties and there you should see that a progressive sequence will not be interlaced (Field Dominance = none). And if you export to a mov using the sequence settings it will also retain those settings.

I'm not an expert on FCP so I can't say what other implications the 1080i aspect ratio has. Maybe a question for the FCP forum.

John Vasey · May 19th, 2010, 06:18 PM

Hi, Matt...I believe your hunch is right...that the HDTV (i) setting doesn't necessarily mean it's interlaced...and the clue is to look at the field dominance (none) which would indicate progressive footage. I will check this out on a Final Cut Pro user site to be sure.

Thanks for the tip!

John

Cristian Adrian Olariu · May 20th, 2010, 03:03 AM

I think this may be a bug. I use Vegas, in version 9.0c had the same problem, it told that my 25p footage was 50i. But in next version, 9.0d, it was corrected.

May 17th, 2010, 05:12 PM	#1
John Vasey Regular Crew Join Date: Jul 2009 Location: Los Angeles, CA Posts: 75	FCP question about handling NX 1080 30p footage I shot some test footage in Santa Monica over the weekend at 1080 30p at the highest quality. I used FCP 6 Log and Transfer to convert the footage to Pro Res. When I imported the clips onto the timeline, FCP wanted to changed the sequence settings to match the clip and I said yes. When I later checked the sequence settings, here is what it said: 1920 x1080 aspect ratio: HDTV 1080i (16:9) pixel aspect ratio: square field dominance: none 29.97 Apple Pro Res 422 100% quality 48Khz, 16 bit audio My question is this...when you are recording with the NX5U at 1080 30p, is it being laid down an interlaced file on the card? (as the interlaced sequence setting on the FCP timeline seems to indicates) Is this the normal workflow for shooting and editing projects that started out as being recorded in 1080 30p? Perhaps I was getting confused because I thought I would be editing in true progressive frames like you can in 24 fps footage. I just wanted to be sure this footage was coming in the way it should and that FCP was handling it correctly. The reason for shooting in 30p was for the smoother motion. If any one can share advice on this issue, I would appreciate it. Thanks, John

May 18th, 2010, 09:33 AM	#2
Matt Lawrence Regular Crew Join Date: Feb 2010 Location: Madison, WI Posts: 69	All frame rates are native with this camera, so there is no pulldown on the card. The 1080i aspect ratio, I believe, is the only preset that matches this camera's footage. I could be wrong, but I don't think the "i" actually has any affect on whether you sequence is interlaced or not, it just refers to the HDTV standard. As long as you set the sequences in your project by dropping clips in the timeline (and answering yes when it asks to use that clip's settings), it will grab the right settings. You can check this afterwards by right clicking on a sequence in the browser and choosing Item Properties and there you should see that a progressive sequence will not be interlaced (Field Dominance = none). And if you export to a mov using the sequence settings it will also retain those settings. I'm not an expert on FCP so I can't say what other implications the 1080i aspect ratio has. Maybe a question for the FCP forum.

May 19th, 2010, 06:18 PM	#3
John Vasey Regular Crew Join Date: Jul 2009 Location: Los Angeles, CA Posts: 75	Hi, Matt...I believe your hunch is right...that the HDTV (i) setting doesn't necessarily mean it's interlaced...and the clue is to look at the field dominance (none) which would indicate progressive footage. I will check this out on a Final Cut Pro user site to be sure. Thanks for the tip! John

May 20th, 2010, 03:03 AM	#4
Cristian Adrian Olariu Regular Crew Join Date: Nov 2009 Location: Iasi, Romania Posts: 121	I think this may be a bug. I use Vegas, in version 9.0c had the same problem, it told that my 25p footage was 50i. But in next version, 9.0d, it was corrected.