I’m currently trying to work my way through cam tracking in cycles. I have short clip which has tracked well and I put the Tears of Steel Quadbot on the parking place for testing. I have a plane as shadowcatcher, which also works nicely. However, in the rendered composite, I have a black line where there the edges of the shadowcatcher plane are. It probably has something to do with anti-aliasing messing with the alpha channel. At least that would be my guess. Does anybody have a good idea what to do about this?
Here’s my nodes. You can see the black line in the viewer backdrop:
And here’s my scene: