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Activity Forums Adobe After Effects 23.976 to 29.97 timecode issue

  • 23.976 to 29.97 timecode issue

    Posted by Marcel Valcarce on May 15, 2007 at 11:49 pm

    So I have edited some TV commercials shot on film. and transfered to DVCPro-HD at 23.98 fps. All editing has been done at 23.98fps. There are a lot of spots that need to be combined on a couple of digibeta tapes so I laid out all the spots in FCP on a 23.976 timeline with each spot starting at 1 minute intervals.

    Now I need to use AE to downconvert to SD D1 rez and output 29.97 fps. I know how to do this using the field rendering and add pulldown settings in the Render settings.

    However when placed on a drop frame timeline my spots no longer hit on the minute marks, but drift by +2 frames each minute (due to the drop frame timecode).

    My masters need to be drop-frame. How do I account for that so that the timecode works out right? This is driving me nuts.

    Sam Moulton replied 19 years ago 2 Members · 3 Replies
  • 3 Replies
  • Sam Moulton

    May 16, 2007 at 4:35 am

    this has nothing to do with time code, everything with frame rate. Read the help files. they will walk you through the process of adding 3:2 pulldown to your movie.

  • Marcel Valcarce

    May 16, 2007 at 5:35 pm

    Thanks for your replies. No it’s not a matter of framerate, the framerate is correct after adding pulldown. It’s that we did not take the change in timecode numbering from 23.987 which is essentially non-drop timecode, to what we need on our masters which is drop-frame timecode.

    We laid out all our spots (over a hundred) in fcp on 23.98 timeline where each spot starts at a minute mark. When converted the framerate is correct, but due to drop-frame timecode the spots do not start on their mark (they slip 2 frames per minute). We should have accounted for that in fcp when laying out the spots, but we didn’t, so now I get to cut them all apart in AE and slip them to correct timecode locations.

    Fun!

  • Sam Moulton

    May 20, 2007 at 3:06 am

    don’t feel bad. I know folks that have been in TV for 20 years that don’t get the difference between DF and NDF time code. Just remember that DF always counts hours minutes and seconds accurately but doesn’t always count frames sequentially. NDF time code, after only a minute of running time, does not display the correct hours minutes and seconds but it does always display frames sequentially.

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