The clip above shows a small animal there, then gone, with the ground still tracking naturally under the camera instead of smearing into a patch. Scaling the same idea up to a person is the harder version of the job in DaVinci Resolve, because a person is bigger, moves through the frame instead of sitting still, and drags a shadow along with them.
The DaVinci Resolve route
Resolve ships more object and person removal tooling than most editors. Magic Mask can isolate a person automatically from a single click, so you're not hand-drawing the outline. Once the mask exists, Object Removal and Patch Replacer, both Resolve FX, can fill the space left behind. For anything those don't handle cleanly, the Fusion page gives you paint and tracking nodes to build the mask by hand. Some of the AI-assisted versions of these tools are gated to Resolve Studio, the paid tier, so check what your license includes before you plan a shot around one of them.
Where it breaks
These tools are built around a reasonably short, stable range. A person walking across the frame changes shape on every step, and if the camera is moving too, the fill has to invent more of the background on more frames than a stationary object ever requires. That shows up as a smeared patch where the person used to be, a flicker where the fill loses track of what's behind them, or a faint outline where the mask ran a few pixels short. The shadow is the most common miss: if Magic Mask only caught the body, the shadow stays on the floor after the person is gone, and that's the first thing a viewer's eye catches.
The AI pass, for a person that moves
The fix is the same tracked-mask idea, scaled to a bigger, more complex subject.
1. Mask the whole clip, not one frame
Draw or generate the mask on a frame where the person is clearest, then track it forward and backward through the shot. Scrub the result at full speed and mark where it drifts, usually where they turn, are partly blocked, or cross someone else.
2. Grow the mask to cover the shadow and reflection
A person removed cleanly but still casting a shadow on the ground, or still visible in a window or puddle, is the fix to make before anything else.
3. Remove and rebuild the background across the shot
Run the removal on the tracked region so the background behind the person is rebuilt over time instead of patched frame by frame. That's what keeps it moving naturally with the camera rather than sitting on top of the image.
4. Round-trip back to Resolve
Export the result as EDL, FCPXML or OpenTimelineIO and bring it into your Resolve project on the timeline or color page. Grading, mixing and final delivery stay exactly where you'd normally do them.
Asking an agent to do the AI pass
Remove the person walking through this shot. Track them through the whole clip, including their shadow, and keep the background moving naturally with the camera. Show me the result before replacing the original, then export it as an EDL.
With the run mode set to review, the agent masks and removes the person and waits for your approval before touching the original clip. You decide if it's clean, and the export lands straight into your Resolve timeline.
When Resolve's own route is enough
If the person barely moves, the camera is locked off, and the shot runs a couple of seconds, Magic Mask into Object Removal or Patch Replacer is faster than setting up a separate pass, and you never leave Resolve. Reach for the tracked-mask route once the person is walking, turning, or getting crossed by someone else, or you want to script the same cleanup across many clips with Resolve's Python or Lua API.
Download the free Shoty editor for the tracked-mask route. For the masking step on its own, see AI rotoscoping, and for the Premiere Pro version of this job, remove person from video Premiere Pro.