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Old 12th May 2011, 21:30   #1  |  Link
BilboFett
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Join Date: Oct 2005
Posts: 80
need help unblending previously blended frames rather than dropping frames

Hi, I have a source clip I want to edit in Adobe premiere.
It is 1280x720 (720p) but the moron set the frame rate to 30fps.
30fps video is outside the spec for 720p format and won't display in premiere. (You can only do 23.976, 24, or 59.94 for 720p content).
What's worse, it was presumably shot in interlaced, then post-blended to become progressive, so wherever theres movement, theres blurry blended frames, and it looks pretty bad.
I've already scolded the gentleman and told him theres absolutely no reason he needs to be shooting interlaced for 720p target video. And I told him that if he's at least going to convert interlaced content to progressive from his HD camera, to use interpolation instead of blurry frame-blends. But what's done is done.
In order to edit this video, I have to convert it to standard 720p frame-rate spec, which is going to be 23.976 or 24 (59.94 is not an option).
Obviously when I do frame rate conversion (in something like vdub) to 24, it highlights/heightens the blurry effect and makes it even worse, probably adding jitter as well.
I need a recommendation for a tool to take it from 30 fps to 24 for proper 720p spec for importing into premiere.
So far I haven't had alot of luck (probably doing something wrong).
Any recommendations for some unblending tools
that may do a better job than just ditching some blended frames. I've already used stuff like decomb in avisynth to decimate from 30 to 24 but the blurry/blended frames are still there on all the movement. I did a simple framerate conversion in vdub to 24 and it greatly increased the perception of blurriness/shakiness/jitter.
Any guidance would be appreciated!
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24fps, decimate, frame blending, frame rate conversion, unblend

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