- Posts: 8
- Joined: Sat Jan 14, 2017 3:18 pm
I'm trying to replace the sky of a shot with camera panning (1920x1080). I've keyed out the original sky, and I found a photo with enough resolution to become the replacement and have enough sky for the whole pan (3072x2048). I also found a very clear feature of the original footage that appears in all the frames which gave me good tracking for one tracker.
I'm transforming and then cropping the replacement sky photo so that it matches the dimensions of the footage. My plan was to "connect to" the center of the transform tool of the replacement sky to the "tracker path/position" property of the tracker tool of the original footage so that their movement matches. That resulted in the sky moving in the right direction, but the movement was exaggerated, as if the movement of the tracker was being multiplied by some unknown factor. I figured that this could be because of the relative coordinates used for the center of the transform, so I enabled "Use Frame Format Settings" under "Reference size", but that didn't help.
Is there a way to match the tracker position when the resolution of the two sources differs so much? I also tried animating the offset of the crop tool instead, but it wasn't very obvious what I should connect the X and Y sliders to.
This is for practice (and it may be that I'm out of my depth) but it seems like it should be a relatively easy thing to do.
Many thanks,
Stathis
I'm transforming and then cropping the replacement sky photo so that it matches the dimensions of the footage. My plan was to "connect to" the center of the transform tool of the replacement sky to the "tracker path/position" property of the tracker tool of the original footage so that their movement matches. That resulted in the sky moving in the right direction, but the movement was exaggerated, as if the movement of the tracker was being multiplied by some unknown factor. I figured that this could be because of the relative coordinates used for the center of the transform, so I enabled "Use Frame Format Settings" under "Reference size", but that didn't help.
Is there a way to match the tracker position when the resolution of the two sources differs so much? I also tried animating the offset of the crop tool instead, but it wasn't very obvious what I should connect the X and Y sliders to.
This is for practice (and it may be that I'm out of my depth) but it seems like it should be a relatively easy thing to do.
Many thanks,
Stathis