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Gobhoblin
Participant
October 3, 2018
Answered

How do I turn off Time Interpolation?

  • October 3, 2018
  • 2 replies
  • 5544 views

I'm trying to export a sequence to create a CCIR 625/50 DVD from a project shot on film and digitised in 24p, but there are no options for speeding up the footage.

I have zero interest in frame sampling, frame blending nor optical flow. I just want the footage sped up, like any other film on DVD. Do I have to do this before exporting? There is no support for speed up during the export?

If so, what is the preferred method to make the entire film 25p without Premiere messing with any frames (just implementing a 4% speedup)?

    This topic has been closed for replies.
    Correct answer Averdahl

    Have you tested Interpret Footage?

    By using the Interpret Footage feature in Premiere Pro you can change your 24 fps to 25 fps and you will have no added or removed frames. The length will change and so will the pitch of the audio. Right click on a clip in the Project panel and choose Modify > Interpret Footage. Set the "Assume this frame rate:" to 25 and click OK. Every frame in the footage will be displayed on playback in a 25 fps timeline. No duplicated frames, no removed frames either.

    The audio pitch can be resolved by using Adobe Audition and speed up the original audio.

    My personal opinion is that dropping 24 fps footage in a 25 fps timeline looks really bad. Fast motion and camera pans will suffer from this extra, duplicated frame, every second and make the resulting video "jump". Static shots, ok. Motion, not ok.

    2 replies

    M
    Meg The Dog
    Inspiring
    October 3, 2018

    Unless I misunderstand your question, simply drop the 24fps source on to a 25fps timeline. The source video will now play on that timeline at 24 + 1 frames per second.

    MtD

    G
    GobhoblinAuthor
    Participant
    October 3, 2018

    Meg: If I drop a 24p clip onto a 25p sequence, the duration remains the same, which means all I've done is add frames.

    I don't want to add frames. I want the 24p footage to play faster. I have X number of frames, all I want is for them to be played corresponding to a speed of 25p. Equivalent to keeping each one of them on screen for slightly less time.

    I've exported my project to a uncompressed file, still 24p, so that I'm confident my frames are "intact", and I've tried speeding that clip up within a 25p sequence. I'm thinking this might force Premiere to do what I want, but the problem is: how do I actually test it? How do I know it didn't just drop a bunch of frames?

    M
    Meg The Dog
    Inspiring
    October 3, 2018

    Yes, you are correct and I was wrong. Rethinking this,  I think the best way to proceed is to follow the suggestion made by Averdahl

    and interpret your source to 25 fps and place it on a 25fps timeline.

    MtD

    R Neil Haugen
    R Neil Haugen
    Legend
    October 3, 2018

    Select the sequence, select a speed change, and go to 104% ... ?

    Neil

    Everyone's mileage always varies ...
    G
    GobhoblinAuthor
    Participant
    October 3, 2018

    Neil H: Speed/duration is greyed out for the sequence, and come to think of it, I've never seen it not greyed out on other projects. Is it, in fact, possible to change speed/duration for an entire sequence?

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