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Frame rate of video affected by composite mode.
Hello,
I’m having a weird issue inside Final Cut. I’m working on a 1920x1080i 23.98fps square pixel Apple Pro Res 4444 sequence. All my assets are at 23.98 fps. I created a simple animation in AE, brought it into Final Cut an placed it on my timeline. So far so good. It plays back fine and smooth. But, when I set its composite mode to Overlay… every 2 frames it repeats the last frame… basically the playback on this clip becomes choppy….I really don’t understand why. If i go back to Normal composite mode then the playback is back to smooth. I made sure to render the timeline, maybe that was the issue… but no… checked the safe RT and Unlimited RT and no luck…. I even exported a quicktime using quicktime conversion and the same issue…
Any ideas on why this?
thanksRenzo Reyes
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12 Replies
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[Renzo Reyes] “All my assets are at 23.98 fps. I created a simple animation in AE”
Make sure to specify 23.976 in AE, not 23.98. It makes a big difference.
Jeremy
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Thanks Jeremy. That actually did fix the problem. Who knew that going from 23.98 to 23.976 would fix it. Amazing.
Thanks!
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[Dave LaRonde] “A newbie can think 23.98’s a real-live frame rate, and then it comes back to bite him or her.”
Totally. That would mean adding a digit and 29.97 would become 29.970.
I think the whole NTSC broadcast industry should standardize to even frame rates. How bout 24.0! 60.0! 30.0! 😉
Jeremy
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[Dave LaRonde] “That can’t happen until everybody has all-digital receivers AND all-digital TV sets — no picture tubes. “
And all cameras would need to be firmware updated everywhere, or simply thrown out and repurchased/remanufactured.
Sounds like an economic stimulus plan to me.
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Aunt Bertha needed to get DTV anyway!
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Surely Jeremy, the answer is to standardise on 25 fps. After all most of the broadcast world uses this frame rate and it is a simple matter for cinemas to run digital projection at this rate.
Death to decimal frame rates. Mind you a huge percentage of Cow posts will disappear overnight.
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[Michael Gissing] “Surely Jeremy, the answer is to standardise on 25 fps.”
Well, but of course! I’ll write a letter to the powers that be.
[Michael Gissing] “Mind you a huge percentage of Cow posts will disappear overnight.”
I woudl think there would just be new things to wrry about like, “I have a beta tape that’s 29.97, and need to get it 25. Help!”
Jeremy
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[Dave LaRonde] “I want smoother motion than that.”
It would be 50fps in 720p.
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[Dave LaRonde] “Not a whole lot of flexibility there.”
If everything was shot at 25 or 50, it wouldn’t matter, which is Michael’s argument.
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[Dave LaRonde] “I wonder how this scene will play out if I shoot at 15 fps instead? Or maybe at 12?””
And you think that will make for smoother motion? What? 🙂
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