Should i try a different method for smoother rotobrush edges in after effects?

[JerryLC]

I’ve been trying to get better at masking out moving subjects in my travel clips, but I keep running into a problem where the edges look really jagged and unnatural. I’m using the rotobrush in After Effects and it feels like no matter how much I refine the boundary, the result never gets that soft, believable transition I see in other people’s work.

[MichaelVR]

Yeah I know that feeling. The jagged edges showed up a lot when I was masking moving people in bright scenes using rotobrush. I kept chasing perfection with the initial pass, but the edges still felt artificial. I switched to focusing on the fringe areas with refine edge stuff, and I noticed hairs and hairlines improved a bit, but if the subject moved fast the line still felt flat.

[MadisonUW]

In one clip with a busy background, the matte looked off where the subject slid over text and signs. I found that softening the edge and letting the background blur a touch helped conceal the mismatch instead of fighting every pixel. It didn’t fix it perfectly, but it made it less jarring.

[Aria.W]

Could the problem actually be the footage itself, like compression or rolling shutter, rather than the masking technique?

[MarkRJ]

I had a moment where I paused on a frame and realized I was chasing a perfect cut on moving objects, but real travel clips move through complex colors; maybe the real issue is timing of when to start masking. I left a lot of frames to blend into the background and it felt more natural, even if not precise.