I was making a video the other day and I wanted to crop an image so it would fit into a thought bubble I had put on the screen. but I was only able to figure out how to crop top, left, right and bottom. I wasn't able to crop in shapes at all. How do you do this?
Crop Effect will be limited to a rectangle, with adjustments made to Top - Bottom - Right - Left.
To get a Shape, look into Track Matte Keying Effect, and create a Track Matte in the shape that is desired.
To crop around an image, instead of using a track matte, you might be happier with a garbage matte. If it is extremely detailed you might want the 16 point garbage matte. The 8 point is usually enough for most things and the 4 point for simple shapes.
The titler has full bezier curve controls. I don't have time right now to do a great job, but this was done with the pen tool - I did not make any curves because I don't have the time but I could have made the curves follow my head in a very accurate and detailed shape.
Click on the link above and watch the tutorial.
How to draw shapes with a curve:
When you draw your shape its a open bezier
when you are finished its a closed bezier
When you turn it into a shape to use as a matte for the track matte effect you change the Graphic Type to filled bezier and set the color to pure white.
If you need to animate the matte you place a garbage matte on a white solid instead of using the Titler. Unfortunately the garbage matte does not go beyond 16 points and no bezier handles.
You can feather a matte by adding a Fast/Gaussian Blur to the shape.