Hello, do you confirm that if we want to reduce the speed from a 240 fps video down to 30 fps video, as we can't exceed a 4X slow down, we have to do it in 2 steps. First move from 240 to 60 (4x) then render to 60 fps then finally perfom a 2X from this 60 fps video down to 30 fps. Thanks for clarification.
Right click the clip and insert a velocity envelope. that will allow you to slow it in 1 step.
Just set your project to 30 fps, rightclick your 240 fps in the Project Media map and choose "Add at Project Frame Rate".
Another yet not dissimilar method is to right click the event, click on Properties and then click on the Conform to Project Frame Rate button in the Properties window. The field to the left of the button should then update to show the % frame rate compared to the event's original frame rate.
Another yet not dissimilar method is to right click the event, click on Properties and then click on the Conform to Project Frame Rate button in the Properties window. The field to the left of the button should then update to show the % frame rate compared to the event's original frame rate.
This method, I cannot support, because you have to re-adjust then the event length afterwards and audio is not stretched.
Each to his/her own … what works for one doesn't work for another. I used the Properties approach today because the project is at a very rough-cut stage, so every shot is eventually going to be trimmed for in/out points anyway. And the audio issue is not an issue for this project.
Necessary re-adjusting event length is not the same as trimming and in my opinion an extra step, also you have to do this for every event separately, with the "add at project framerate method" you can import all necessary events at once, but as you said "each to his/her own..."
A good example for the use of the "add at project frame rate" option is following issue I had two years ago. In that time I had an actioncam with internal stabilization that only worked fine when recording at 47,952 fps. Unfortunately my TV doesn't support 47,952 fps. So I set my projectsettings to 50 fps, which is perfectly supported by my TV, and imported all 47,952 fps clips at 50 fps. While the audio is also speeded a little up, which isn't heard, I was able to easy edit and watch my holiday memories.
@3POINT ... Please note that the OP has marked LongIslanderr's suggestion as the solution, yet that solution does not stretch the audio either, and adjusting the length of the event (whether its called trimming or otherwise) is also needed as adding the velocity envelope +/- 100% does not alter the length of the original event on the TL. I therefore assume that you do not support LongIslanderr's approach either.
OP had already marked LongIslanderrs suggestion as "the solution" before I posted the "add at project frame rate" solution. Personally I find LongIslanders suggestion even worse than your's, but again "each to his/her own..." I really don't care...