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  • Jerky Animation

    Posted by Andy Rennie on June 22, 2007 at 1:06 pm

    Hi, I have recently been given a number of 3D visuals (Google Earth Style Animation) they were supplied to me in WMV 640×480 30fps. The animations were very jerky, most likely due to the hardware used for output, I guess.

    The first couple of animations were only 5 seconds long; so I converted to QT, imported to AEP7, removed the still frames, played with time-remap and hey ho.. perfect.

    I have now received another file.. some 5 minutes in length and my question is, if anyone has a quick solution to smooth out the playback, without resorting to frame by frame..

    Many Thanks

    Andy

    Roland R. kahlenberg replied 19 years, 3 months ago 4 Members · 6 Replies
  • 6 Replies
  • Aharon Rabinowitz

    June 22, 2007 at 1:23 pm

    That’s how I would do it…

    —————————————-
    Aharon Rabinowitz
    arabinowitz(AT)yahoo(DOT)com
    http://www.allbetsareoff.com

    —————————————-
    Click the link below to subscribe to the Creative Cow After Effects Podcast, and get free AE video tutorials:

    https://phobos.apple.com/WebObjects/MZStore.woa/wa/viewPodcast?id=111087911

  • Andy Rennie

    June 22, 2007 at 1:57 pm

    Thanks for your reply Aharon.

  • Aharon Rabinowitz

    June 22, 2007 at 2:15 pm

    sorry i could not be more help. Other than going back to whomever provided the material and asking them to do it right, there’s not much you can do at the post production end, except hard work….

    But wait! Hmmm….

    Unless, you want to convert it to an image sequence (TIFF, TGA, PNG, JPEG), and then just delete duplicate frames. Not as much work as it sounds

    Import the footage into AE – but not as a sequence –

    then make a comp, drop all images in and then make them each one fram long (trim them tot he first frame).

    then select them all and choose Animation > Keyframe Assistant > sequence layers – no overlap

    Then move through it frame by frame deleting all duplicate frames.

    Then (again) select them all and choose Animation > Keyframe Assistant > sequence layers – no overlap

    That will do it. that should be easier, I think… Does that make sense?

    —————————————-
    Aharon Rabinowitz
    arabinowitz(AT)yahoo(DOT)com
    http://www.allbetsareoff.com

    —————————————-
    Click the link below to subscribe to the Creative Cow After Effects Podcast, and get free AE video tutorials:

    https://phobos.apple.com/WebObjects/MZStore.woa/wa/viewPodcast?id=111087911

  • Roland R. kahlenberg

    June 22, 2007 at 2:54 pm

    [Aharon Rabinowitz] “That will do it. that should be easier, I think… Does that make sense?”

    Hi Aharon, great solution there except for the trimming bit. There’s a preference setting to set the duration for stills. That alone will safe quite a bit of time for the trimmings.

    I was wondering if Dan would be able to write a script to look for duplicates and then I thought about using a different matte to help locate identical, adjacent frames.

    One way to go about this is to do the Sequence layers thingy. Then select all layers and duplicate them. After duplication, the duplicates will still be selected. leave them selected and precompse those.

    Now apply the Difference Matte for the first frame (layer) and set the precomposed layer as the Difference Layer. Save as Animation Preset. Select all single frame layers and then apply the Animation Preset. Nudge the precomposed layer one frame ahead in time.

    Now stepping through the timeline looking for repeat frames will be quick and easy – just delete any single layer frame should the comp window be pure black.

    Make ense?

    Cheers
    Roland Kahlenberg
    https://www.broadcastGEMs.com – Adobe After Effects project files
    https://www.myspace.com/rorkrgbspace

  • Kevin Camp

    June 22, 2007 at 5:47 pm

    if the duplicate frames are regular… ie always 3-in-a-row, then you could just drop the footage in to a comp that is the frame rate divided by the number of duplicate frames (frame rate/3, in my example). or use interpret footage to set the frame rate of the clip to the number of frames times the actual frame rate and put that into a comp that is the actual frame rate.

    either way, you may be able to precomp that and apply time remap on the precomp, or render the new footage, import and apply time remap.

    Kevin Camp
    Designer – KCPQ, KMYQ & KRCW

  • Roland R. kahlenberg

    June 22, 2007 at 7:26 pm

    Sounds workable. And my solutoin doesn’t need a Difference Matte. Just the Difference blending mode should do. That plus a few nudges for the precomped layer after each repeat frame is found.

    But the best solution is to get the bugger to provide better files to work with.

    Cheers
    Roland Kahlenberg
    https://www.broadcastGEMs.com – Adobe After Effects project files
    https://www.myspace.com/rorkrgbspace

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