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1080p not a choice AND 2 pops not lining up
First off I should tell you that I am working on a 24p animated CG film. We have been doing HD exports here and there all year. I do not have an option to export as 1080p, therefore I have been exporting in a timeline set as 1080i, 24p and the exports look fine. When getting advice from the company that set up up they feel that doing a 24p export at 1080i may make a progressive output, but I am confused on why there is not a 1080p option. It just makes me a uneasy. Any solid info on this would be great.
I should mention that we did a 35mm print of an edit and had a strange problem with frame rate drifting with the sync with the audio from our sound designer when rbought together at Dolby. This is why I became concerned and wanted to make we are doing everything correctly on the editorial side. Like I said, I do all my HD exports at 24p sq pixels at 1080i. This drifting could have been a mistake made outside of FCP as well on the audio dept side. I just want to find the root of our problem.
Another problem that may have a connection – I am now getting files from our music editor and the tail 2 pop is not lining up with our edit. We are both working in 24p. Any ideas on what is going wrong? They seem to think it is a bug in FCP. Although an older music file seemed to line up fine… although now I am seeing some strange things in FCP. I sometimes see visually a 2 pop in two locations when I zoom into both where it should be and where the new file has it, but only hear it in one. They delivered 48k, 24bit wav files and I converted them to 48k, 16bit aif files since that matches out timeline settings more accurately. Although I did check both files and the 2 pops line up in the same place on the timeline for both. Is this something they maybe did differently when deliverying the files the second time. Is there a known big in FCP?
Please help if anyone knows what may be wrong.
Thank you.
Melissa
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35 Replies
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[Tippytink] “but I am confused on why there is not a 1080p option.”
Where do you want to see this option and where aren’t you seeing it?
[Tippytink] “Like I said, I do all my HD exports at 24p sq pixels at 1080i”
You mean you add pulldown to get you to 1080i 29.97? 1080p24 is different from 1080i29.97.
FCP can handle 24bit wavs, what happens if you keep that file the same (don’t convert it) and put it in the timeline, does it line up then?
Jeremy
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[Tippytink] “1080i, 24p and the exports look fine. When getting advice from the company that set up up they feel that doing a 24p export at 1080i may make a progressive output, but I am confused on why there is not a 1080p option. It just makes me a uneasy. Any solid info on this would be great.”
What you are saying here doesn’t make any sense. You say there’s no option for 1080p, yet you are using one by outputting 1080p24. There’s no such thing as 1080i/24p. 1080i is interlaced, 29.97 frames per second. 1080 24p is 24 frames per second, progressive-scan.
There is such thing as 1080p60, and yes, FCP does not support it. Nor do most professional VTRs, switchers, monitors, etc.
Final Cut likes to work with 1080 23.98p (normally called psf instead of p, but that’s not important). This is “telecine speed”. When convering film to video, it is generally slowed down by .1% to match the timing signals of televisions. So 24fps becomes 23.976fps (FCP rounds the number to 23.98).
Cinema Tools can conform your quicktimes from 23.98 to 24 and vice-versa. This will slow down or speed up the audio to match. This probably has something to do with your sync issue.
Sean
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What I mean to say is that in the FCP timeline settings there is no 1080p option. My timeline is set for 24 frame per sec and I then choose the only 1080 option I see, which is 1080i. I am not technically saying any one thing is happening… I am just stating what settings I am choosing. I can take a snap shot if that helps.
Melissa
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That file does not line up either. I did try that. I am having the sound designer and music editor check their sessions to my LFOA list.
Melissa
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Here is a snap shot since I may not be saying this in a clear way. I have a feeling all is well when concerning the settings since it comes up with no rendering and the exports look good, I just wanted to make double sure.
https://www.tippytink.com/1080i_24p.jpg
Melissa
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That’s an aspect ratio popup. The i is not relevant. It’s just the most common form.
All the best,
Tom
Author: “Final Cut Pro 5 Editing Essentials” and “Final Cut Express 2 Editing Workshop” Class on Demand “Complete Training for FCP5” and “Final Cut Express Made Easy” DVDs
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What Tom says.
As long as you have the frame rate set for 24 and your field dominance set to none, you are ok.
You have both of those set properly.
Jeremy
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Thank you Tom and Jeremy, I had a feeling I was trying to fix something that was not broken, but I wanted to be sure.
I am still curious about my 2 pops not lining up. The music editor is sure he is all good on his side. All the reels he delivered are consistently off at the tail 2 pop. Which of course worries me. What is strange is that the tail 2 pop is ending early not late. Any ideas?
Melissa
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How far out are you talking about over how long a program? Sure someone’s not running at 23.976?
All the best,
Tom
Author: “Final Cut Pro 5 Editing Essentials” and “Final Cut Express 2 Editing Workshop” Class on Demand “Complete Training for FCP5” and “Final Cut Express Made Easy” DVDs
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FCP is almost 99% of time actually editing in 23.976fps, not 24
Sound people, however, are almost always at 24.
Have your sound editor coform their mix in a 29.97 fps project, and export those files to you. 29.97 and 23.98 are essentially the same as far as audio is concerned.
when you get a film print done, the Dolby technician should be made aware of the speed your audio gear is running at, and they’ll correct for the percentage on the MO disc.
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