Ouch. The mask vertices are determined by the PIXELS of the layer: x pixels horizontally, y pixels vertically. I'm afraid you're stuck scaling up the masks.
You could use those scaled up tiffs as a track matte, so drop your final seq underneath the test one and change the Trk Matte on the layer from None to Alpha Matte
That might work, but I wouldn't count on it. Apparently, the TIFFs that count are 8 times larger than the ones that were masked. To use the originals as a track matte means scaling them up to 800%, and those edges are NOT going to look good. But it all depends on the nature of the masking done originally.
I'm assuming you used proxy files that were very small. You may have to do some math to figure out exactly what numbers you are going to need to work with. Without knowing exactly what your comp settings are and what the original dimensions of your original tiff files are I can't tell you what to do, but here's how to fix the problem that should work even without calculations.
- Make a note of the scale value of the layer you did your masking on.
- Take the layer you scaled up to roto back to 100% scale.
- Pre-compose that layer moving all attributes
- Add your full sized tiff images to the new composition (here's where the math may come in)
- If your full sized images are the right size for the comp then all you have to do is scale the pre-comp back up to 800% and collapse transformations to clean up the edges of the matte
- If your full sized images are not the right size for the comp then you'll have do to some math and then scale the pre-comp up to match or just scale the pre-comp by eye to line up
- Make the pre-comp an Alpha Track matte for the full sized image sequence.
Just a hint for future reference. If you use low resolution footage in a comp and have to scale it up to fill the frame you are not saving any production time because AE is going to make the calculations on the scaled up pixels, not on the original. The only reason to use PROXY footage that is low resolution is to save storage space. It does not make AE work any faster at all unless you are working in a smaller comp that you plan to resize later.
Dave, would converting his masks to shapes and scaling get around the edge issue?
If you try and convert your masks to a shape layer you'll end up with tiny shape layers. You could scale them to 800% and use them as a track matte.
My first fix needs to be modified.
Here's what to do,
- Scale down your rooted layer to 100%
- Select the first mask and all of it's keyframes and copy
- Use the Pen Tool to start a new shape layer and paste
- Make sure there is no stroke applied
- You will now have a shape layer that should exactly match the first mask
- Repeat the process for any other animated masks
- Scale the shape layer up to 800%
- This will only work if you have not changed the anchor point or position of the small tiff sequence
You can do this in the pre-comp. Turns out that Masks on layers that are scaled will not continuously rasterize so you'll get rough edges. Sorry for the bad advice.
Ok, thanks for all the ideas guys. I wound up just redoing the masks