After effects and 24p advanced

G

gupit

New member
Hi,

I have some aerial footage that I shot using DVX100A (24p advanced).
I captured the footage using Adobe Premiere 1.5 and scene detect.

However there is a lot of camera shake in the footage (windy day). So I wanted to pull this footage into Adobe After Effects and motion-stabilze the footage before using it.

AE however interprets the footage as 29.97 frames per sec (from the file). Should I force the frame rate to be 23.976?

I searched for after effects on this forum but couldn't get any useful results.

Also, this footage really lacks in clarity. The crispness and details are sort of lost. Could it be because I shot in 24p? Or is it a technical limitation of the dv format. The green landscape sort of blends together and you can't see the detail in it.

Or could it be related to the focus? I had set the camera on manual focus and used the infinity focus control to set the focus. While discussing this problem with a friend who does aerial still photography, he mentioned that the focus shouldn't be set on infinity, but a bit short of infinity focus. Does that make sense? BTW, I was shooting through a reasonably clear plastic glass window of the Cessna. And though it was a bit hazy, stills captured by a fellow passenger were really clear.

Any tips, suggestions? Can I post process the footage to gain back the clarity a bit?

Thanks in advance
Gupit
 
gupit said:
I had set the camera on manual focus and used the infinity focus control to set the focus. While discussing this problem with a friend who does aerial still photography, he mentioned that the focus shouldn't be set on infinity, but a bit short of infinity focus.
Click to expand...
Your friend is correct. Infinity on the DVX100a is around 95. Note, if you are using the anamorphic lens then this value is around 93.

Here's one focus chart:

http://www.lightbyeye.com/more/morestuff/dvx100focus.htm

Search this board or google for "dvx focus chart" and you should find more info.
 
Thx for the information on focus. Wish I had known it earlier.

Any suggestions on how to import this footage into Adobe After Effects?
Thx
 
Shadow said:
HansK, is this chart the same with DVX100A ?
Click to expand...
No, it's a little different for the 100A. Not sure where to find an updated one. Oh, in Barry Green's DVX book:

http://www.dvxuser.com/articles/dvxbook/

gupit said:
Any suggestions on how to import this footage into Adobe After Effects?
Click to expand...

Not off hand. Make sure your composition is setup as 23.97. Also, try forcing the footage to be interpreted as 23.97.

Btw - The motion stabilizer might work. Also, it will take forever to render. Test it with a small piece of the footage. Tweak the parameters until it starts to look good. Then apply to more of the footage.
 
After Effects- If you haven't already removed pulldown (convert to pure 24fps) then import the footage. Select clip in bin, use menu File > Interpret Footage -> Main ->Guess 24pa pulldown

Make comps 23.976 fps
 
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