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Frame Rate Madness
I am doing additional editing/adding footage to a project shot 24(23.98) FPS HDV on a Cannon XL-H1.
The first five hours of footage was captured to (Perhaps converted in Compressor) Apple ProRes 422 at 30FPS Progressive. The second five hours was captured as 24FPS HDV. The deliverables on this project will be Standard Definition, so I tried to down-convert both groups of footage to 23.976FPS anamorphic DV, and started editing on a 23.976 FPS DV timeline… the (formerly ProRez 29.97 FPS) stuff looks bad— It’s really “juddery”.My question is, how can I get smooth playback on both groups of footage when combined on the same timeline? Should I convert the HDV 23.98P footage to 30P Prorez or is there a solution that allows me to work in Standard Def without judder?
Any ideas are appreciated
JB
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4 Replies
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Are you viewing out of a broadcast monitor, or just your canvas window? The other thing to keep in mind, as you convert your HDV to DV is that HDV (all HD formats) have an Upper Field dominance (Odd) and DV NTSC has a Lower Field dominance (Even) so if this wasn’t adjusted when you converted in compressor, that could account for it.
Richard Sanchez
North Hollywood, CA“We are the facilitators of our own creative evolution.” – Bill Hicks
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I would recommend adding 3:2 puldown to all of the 24p footage then editing everything in a 60i (29.97fps interlaced) project. By trying to edit in a progressive project, you’ll never get both frame rates to look acceptable together. Adding 3:2 pulldown is the key to getting the 24p to play nicely with 30p.
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Good suggestion..
can I add that in Compressor (by converting straight to 29.97) or do I use Cinema Tools to add the pulldown?JB
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The Judder seems to occur both in the canvas and on my NTSC monitor. As for adjusting for the upper/ lower field dominance in Compressor… should I adjust that in the HDV files before converting them, or do I adjust that in the DV settings in the Compressor inspector?
JB
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