Mixing frame rates in a timeline with slow motion

The Time Interpolation settings in the Export panel will only be applied when the Source (Sequence) frame rate doesn't match the Export frame rate. If Source and Export are both the same (like 30p), then it does nothing regardless of what frame rate the individual clips in the sequence are.

As for using slow motion in the timeline, in your situation you may not need to use Optical Flow, which is meant to create new in-between frames where none existed before to smoothen motion.

In your case of having high-frame rate sources, you can apply 50% slow to 60p clips in the 30p Sequence and will get perfect slow motion without any interpolation, and could do the same with 120p clips at 50% or 25% speed. No fancy interpolation needed at all. If you drop to a lower speed where frames start to get duplicated in the slow-mo replay, then the Interpolation options can be used to smooth the motion out, otherwise not needed as far as I know.

So in other words, you may be trying too hard when in fact you may not need to do anything other than a basic Speed/Duration change to get great results. I often apply 50% speed to 60p clips in a 30p Sequence with excellent results, no interpolation applied.

Thanks

Jeff Pulera

Safe Harbor

You might need to test. Create a sequence or select a section of a sequence with short clips in various forms as you'll be using, export it, and watch it both back within PrPro and maybe on a TV via usb stick. See what it looks like in a couple different settings.

Neil