Clip speed duration vs interpreting footage final answer

[Jeremy_at_work]

Hello all,

I'm hoping to solve this issue as I want to fully understand each method for best practice moving forward.

The example i'll use is footage shot at 60fps and editing on a 30fps timeline. The end result using either method is 50% slower.

I have found two different answers on this forum.

Without using optical flow (keeping footage at default interpolation) is there any difference or does Premiere use the same method for both?

I personally use clip duration as I like to know the exact % of speed i'm at. Every project/shot is different and I use different rates to get my result. If I used interpret footage, it would be a global setting in the project and instead of knowing I want it 10% faster than 50%, I would need to figure that out with frame rate.

[excited_Genie16B8 · Accepted solution]

There is no difference using those numbers.  Change the numbers, and the results may change as well.

By the way, the Interpret method is specific to individual clips, it's not a global setting.  You select the clips you want to change, right click and choose Modify>Interpret Footage...  Only those clips will be affected.

[Jeremy_at_work]

Thanks Jim. Both methods are equal as far as results when the footage speed is cut in half.

Good catch on the "global setting in the project". I just refer to anything modified to a master clip to be a global setting on a master clip rather than laying it down on a sequence and modifying it  there.