30P in Slo-mo looks bad

jkrepner wrote on 8/25/2005, 7:35 AM

I have some 30p footage that I need to slow down / ramp up using a velocity envelop on the event. Problem is, the 30P footage looks very choppy when the velocity is changed. I've tried a few things - motion blur, super sampling, and rendering with and without pull-down (I know none of that SHOULD matter anyway) - but nothing seems to help.

Is there any tricks you can share? Or will I need to live with.

Thanks.

Jeff

Comments

farss wrote on 8/25/2005, 1:50 PM

30p has only 30 frames per second against 60i's 60 fields, that's what's causing your problems.

GlennChan wrote on 8/26/2005, 10:22 AM

If you have the latest version of Shake, Boris / Optical Flow, RevisionFX or a similar plug-in they can do a much better job of slow-mo.

2- WIth Vegas, I think you can get the frame blending stuff where you blend two frames together to get the in-between frames. If Vegas is set incorrect, it may be trying to blend fields together instead of frames and that could look wrong.

jkrepner wrote on 8/26/2005, 1:34 PM

No Shake, or other apps but AE, but I'll try the field blending options in Vegas, but I think Farse is right... 30P just doesn't have enough material to make slo-mo look good.

Thanks guys.

Jeff

farss wrote on 8/26/2005, 4:05 PM

Just one tip about SloMo in general, if you know in advance you're going to SloMo a shot, faster shutter speeds will help, same goes if you're going to do motion compensation with things like Steadyhand.
Bob.