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Activity Forums Adobe Premiere Pro Changing Frame Rate without changing total runtime

  • Changing Frame Rate without changing total runtime

    Posted by David Bowen on June 6, 2023 at 5:34 pm

    Hi All,

    I’ve been asked to transcode a series of 22′ episodes from 29.97 to 25fps for international distribution, with the stipulation that runtime needs to stay the same.

    My understanding is this isn’t possible using Premiere without introducing stutter, as 20% of the information will be lost (since 1 frame out of every 5 will be missing). This will cause the videos to fail any decent QC pass.

    So, do you have any suggestions? Is this something Twixtor could do? I’ve also heard a little about Alchemist? Or would I need to invest in some niche hardware to handle this?

    David Bowen replied 1 year ago 2 Members · 2 Replies
  • 2 Replies
  • Hector Vera

    June 6, 2023 at 6:22 pm

    One question, what format are those 22 episodes of that series? And depending on the specs of your computer and format you use, you may be able to find something that will not studder. Losing frames seems to be only the result when there is a lack of required specs to run in the frames per second like its attended. Premiere Pro should be able to render videos without cutting frames with the right specs and format!

  • David Bowen

    June 6, 2023 at 7:03 pm

    I don’t think specs and format have anything to do with it, do they? Whether they’re h264, ProRes, or MXF — frames are frames. Converting 2997 footage to 25 without allowing a change in run time means one frame in five will be deleted. This will happen if the video is h264, or ProRes, or anything else.

    How good my computer is doesn’t affect this.

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