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jittery motion in 24p
I shot in 24p using dvx100b and downloaded it to a 24p timeline in Premiere. I exported the edited video to AE for color grading then exported it to Encore for burning the DVD.
Do you think this is what’s causing the jittery movements: I worked on a timeline at 24 frames per second (24p preset), I then exported uncompressed using “29.97” and used the footage in after effects, then I exported to encore with the mpeg2-dvd preset (which is also 29.97)
I think what I should have done is edit in 24p, export intermediate video file to AE (for color grading) using “24fps” settings (23.976), then when in AE export again to encore with mpeg2-dvd at 29.97.
ut in omnibus glorificetur Deus
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5 Replies
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2 possibilities:
Is your “24P” consistently 23.98P ?
Or is it actually true 24P at times?Also– to get to 29.97, you will have to introduce 3:2 pulldown, and I believe you will have to explicitly do this.
-Jeff
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Thanks Jeff!
[Jeff Brown] “Is your “24P” consistently 23.98P ?
Or is it actually true 24P at times?”What does that mean? I shot with a Panasonic DVX100B, then attached a firewire to my PC and downloaded to a 24p preset timeline in Premiere. As far as I know, the DVX100b shoots 23.976.
[Jeff Brown] “Also– to get to 29.97, you will have to introduce 3:2 pulldown, and I believe you will have to explicitly do this.”
24p cameras record at 29.97 (to be NTSC compliant) but when you drop it to the 24p preset timeline and when you can count the frames by scrolling the timebase counter, it’s 24. So I guess premiere automatically removes the pulldown. Now how do I “explicitly” introduce back the pull down to make it 29.97 again when I export?
ut in omnibus glorificetur Deus
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Film cameras can shoot at 24.000 FPS. Video, is of course, typically 23.98. Audio programs also need to make a distinction between 24.00 and 23.98 for obvious reasons. I have not used the Premiere 24P preset to know which Premiere uses…
Sorry to say I have not used a 24P timeline out to 29.97 in Premiere either, but in a compositing program you usually just check a “add 3:2 pulldown” box. Have you tried authoring to a 24P (OK, 23.98P) DVD and see how the player interprets it? That might give you the best results.
-Jeff
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Thank you very much Jeff. I will try adding the pulldown in AE (I’m not sure if it has, but I’ll look for it). I will also try authoring a 23.98p DVD and see which one will give the best results.
ut in omnibus glorificetur Deus
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Clyde– That is the best way: testing! Props to you for being willing to try a couple variations. So many people seem to want the quick fix, when we are all engaged in “researching” a lot of the time.
-Jeff
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