taking advantage of 60 and 120 fps in an edius timeline

[Mat Cain]

Ok - I have been shooting and editing a lot with GoPros. I have typically shot at 60 fps. When I load the video on a a standard 29.97 fps timeline the video loads in fine - it looks like it doesn't use the extra frames or ignore them. I can put it in slow-mo at 50% and it looks great (but am I looking at interpolated slow-mo or is it taking advantage of the doubled frame rate?) I am not sure what is the proper way to take advantange of this frame-rate.

I have also experimented with the 120fps video. However, when I slowed it down it doesn't look as good. So I am wondering - what is the best way to take advantage of the high frame rates?

I shoot go-kart footage and want it to play back fine until I need it in slow mo then I want clean slow-mo at my disposal. It might be that i am doing this all wrong so I was wondering what is the proper way to take advantage of higher frame rates.

http://youtu.be/6bNbeNp4Bts

Thanks for any help

[Khoi Pham]

Try go into property and change that clip frame rate to match timeline frame rate and you should see smooth slomo without applying slomo to the clip.

[Ron Evans]

Ok - it looks like it doesn't use the extra frames or ignore them.

29.97 and 60p have the same temporal motion. ie the same number of exposures per second so they fit on the same timeline just fine at the same speed. 29.97 interlace is 60 interlaced fields per sec ( actually 59.94 to be correct) so the exposure rate is the same as 60P ( which is also 59.94 ) . Very confusing I know 29.97 is the time code rate for 60i. Not to be confused with picture frames. So there are no extra frames for 60p from 29.97. For 29.97 there are 59.97 interlaced fields ( half vertical resolution pictures) and for 60p there are 59.97 full picture frames per second, same exposure rate out of the camera for both, one has half the vertical resolution of the other.


Ron Evans

edit: 30P is different and has only 29.97P fps. For a 30P timeline the 60P video could then be slowed down to 30P timeline. But a normal 29.97 timeline is really 60i timeline.

[Mat Cain]

good stuff - so how does 120fps fit in?

[Ron Evans]

good stuff - so how does 120fps fit in?

It depends. On a 60i ( 29.97 ) or 60P timeline it would slow down to half speed. For a 30P timeline it could be slowed down to a 1/4 speed. For really slow motion you would need even faster exposure/frame rates. Just be careful to note the difference between true exposure rates and time code rates for interlace.

Ron Evans