How do you delete frames to create a jumpcut like effect?

thomaskay wrote on 12/30/2004, 11:09 AM
Here's the situation: I have a subject about 40 feet away from me. He walks up to the camera and stops directly in front of it. I want to do that jump-cut effect where frames are deleted as he proceeds. What is the best way to do this? I hope I'm explaining this somewhat clearly.

Thomas

Comments

Liam_Vegas wrote on 12/30/2004, 11:44 AM
Do you want to

1) produce a jerky/low frame rate effect?
Or

2) do you want to just choose various points to cut a batch of frames?

if 1) then you need to mess around with the playback properties of the clip (right click the event and look at the properties). You can "undersample" the image that should throw away frames making the result look "kerky"

if 2) then you just need to split the clip ("s" key) at various points and simply drag the right edge of the resulting clips to throw away parts of the video that you don't need. Then you just have to move the smaller clip segments so there is no space between these clips.

Give it a try,
BillyBoy wrote on 12/30/2004, 12:25 PM
Watching someone walk 40 to get close to the camera is a very long time. You can do all kinds of things in Vegas. I would probably keep a few steps at the start and end then just do a cross-fade or disolve trasition cutting the middle frames out. If you want a more comical effect you could drop in the velocity envelope and have him increase his pace and stuff like that.
thomaskay wrote on 12/30/2004, 4:47 PM
I don't want to degrade the picture (I'll pocket that idea, though. Sounds cool). Cutting frames with crossfading - I think I can see how that would come out. Will try.
FrigidNDEditing wrote on 12/30/2004, 5:11 PM
yea, just take the strip of video and cut out the sections inbetween the sections that you want to show up. then you could either a) butt the ends of the clips right next to each other, or b) drag them accross each other so that the subject fades from one spot to another. (I would only suggest this assuming that you have a tripod shot being used as apposed to handheld)

As far as which one I'd use, I would say that depends on the effect you are looking for. If you want to get the feeling of it taking a long time, use the fades. If you want to give the effect of a quick / high paced just butt the ends together or possible just a 1-2 frame overlap. IMO
FuTz wrote on 12/31/2004, 6:09 AM
I just did a quick test and it worked. But you won't be able to choose the exact sections you'd like to show :

render at:
4 frames/second (or slower...)
Uncompressed (AVI)
Field Order: none (progressive)

WIth this rendered clip you could then apply some motion blur if you want.
FuTz wrote on 12/31/2004, 6:16 AM

I figure out you can do all the above at different frame rates, stack the tracks on top of each other and put opacity envelopes to play with so your final clip jumps or fades between one track to the other. That could be great too (?).
JohnnyRoy wrote on 12/31/2004, 7:40 AM
You also might want to check out Pixelan SpiceFILTERS StepTime. This should do what you want and has a lot of variations on that theme with dissolves, ghosting, etc. (and its a whole lost quicker than playing with cutting frames)

~jr