For anyone reading this, referring back to original post, the behavior seen by OP is NORMAL. If for instance you put a 60p clip into a 30p timeline, is does NOT automatically play in slow motion. Rather, Premiere assumes - and rightly so - that it should play the clip at a "normal" speed. Unless you tell it otherwise. Lots of folks work with mixed footage of various frame rates and if they all played at various speeds of slow motion automatically, what a mess that would be!
There are two ways to set speed. One is to use Modify > Interpret on the clip in Project Bin. If we tell Premiere to treat the 60p clip as if it is 30p, then that clip will be twice as long when placed in the 30p timeline and will seemingly play at 50% speed. If a 120p clip went into same 30p sequence, and was also Interpreted as 30fps, that clip would become 4x longer and play at 25% speed. Hope that makes sense. Basically Premiere will be playing every frame of original clip in these scenarios.
The second way to achieve slow motion is to do it manually. Don't interpret the footage, just drop that 60p clip into 30p sequence, then set Speed to 50%. Same result, Premiere then shows every frame and duration is 2x. Or set 25% for that 120fps clip in 30p sequence. Of course 50% would also work, but then still skipping half the frames.
To for the original question of 120p clip into 24p sequence, just drop into timeline and apply 20% speed to see all frames.
Why do this rather than Interpret? I might shoot a wedding at 60p and edit as 30p. I don't want it all to appear in slow motion, just a few select scenes. Since I did not interpret footage, all looks normal unless I should choose to make a certain clip 50% then I get that lovely smooth slow motion on just that clip.
Thanks
Jeff
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