25fps clips became longer when inserted in a 24 fps project
Can someone explain me why if I insert a 25pfs clip long 10 sec. in a 24pfs timeline the clip cover 10 second and 10 frames of the timeline?
And If I insert a 120pfs, or a 29.97fps, clip long 10 sec in the same timeline it still cover 10 second?
Differently for the 120pfs the speed became 20% and 80% for the 29.97fps. And this makes sense.
It seems that FCPX already conform the 25fps clip to the timeline setting, and it plays it for a longer time.
But if in the clip retiming options I select “automatic speed” the clip get a 96% slow???? And this it does not make sense to me.
I used a 10 sec. clip as sample, to simplify the problem…
But I have a 79 minutes documentary in 25fps that I wanted to convert at 24fps for movie theater distribution. I thought to use automatic speed to conform the final video to 24fps… but it seems that It will be enough to insert the clip in a 24fps project and it’s done!
Can someone explain me this issue, and confirm if the process to convert to 24fps is correct?