In PAL land but want to use NTSC 60fps for slow mo

FilmingPhotoGuy wrote on 2/13/2011, 7:53 AM
Since the only difference between PAL and NTSC in HD is the frame rates and NOT frame size can I safely use 720p at 60fps? The final output is PAL 720p at 25fps.

The cam can switch between PAL (50fps) and NTSC (60fps). I want it for slo mo purposes. I assuming I will get 10 extra frames per second if I use 60fps.

Are there any side effects to my assumptions?



Comments

Rainer wrote on 2/13/2011, 6:54 PM
I've been playing around with this type of slo mo, dropping 30p onto a 25p timeline, slowing the framerate by .8333 and extending the clip. No side effects. I first went to the trouble of creating a sequence of single frames numbered 1 to 30 (not that hard, just made and loaded 30 jpegs correspondingly named 1-30 as a sequence) to make sure no frames were skipped or doubled on render, and I can now tell you it actually conforms properly. Since you are shooting 60p and rendering to 25 (p?) you could get an extra 35 frames - smooth slo mo. Just be very careful of the order you do things. Not sure how much you'd need to slow things down - I guess .4166. You might do a similar jpeg sequence and play around with the slow-down rate.
corug7 wrote on 2/13/2011, 8:12 PM
You'll want to be careful about what you are using for light. Sunlight obviously won't be a problem but you might have some problems with strobing indoors due to the mains frequency in PAL land.
FilmingPhotoGuy wrote on 2/13/2011, 10:47 PM
To get the benifit of the 10 extra frames you have to right click the event-properties- and select "disable resample" otherwise Vegas will resample the 60fps clip to your project settings.

I need confirmation on this!!
farss wrote on 2/13/2011, 11:08 PM
No need to worry about this.
If your timeline is 25fps and you have shot 60fps do the following.

1) Set project to 60fps and ruler to absolute frames.
2) Note length of event in frames.
3) Change project to 25fps.
4) Ctl+ Drag end of clip to the exact same number of frames noted in 2).

That's it. Vegas will now play the same number of frames at 25fps.
You can use the same technique for any frame rate change.

Bob.