How to remove the background from a video without a green screen

Can you remove the background of a video already taken?

Yes, even if nobody thought about it when you filmed. A green screen works by colour: everything of one green goes. Background removal without one works by recognising the person: a model trained on people decides, frame by frame, which pixels belong to them, and turns that into a matte, a black-and-white map of what to keep. The picture is then drawn through the matte, with the person kept and the room taken away, or the other way round.

That is why it works on footage shot anywhere, and also why it struggles in the places a person is hard to tell from the room: wisps of hair, a fast hand, a dark jumper against a dark wall.

What makes a cut-out look clean?

The edge. A viewer forgives a plain new background and never a fizzing outline. These are the usual troublemakers, and what helps:

How do you remove the background from a video without a green screen in Sharpy?

The person is found on your Mac, frame by frame, and the cut-out works whatever the crop, placement or phone rotation.

1. Open the clip's THE PERSON section in the inspector. It has three settings: keep the person, which cuts the rest away; cut them out, which keeps everything but the person; and words behind, described below.
2. Choose keep the person. The room goes and the person stays.
3. Put the new background on the track beneath. A still, a video, a colour or another shot. Sharpy's search covers stock video from Pexels and Pixabay, fetched at the size of your piece, and their credit goes into the video's description, never onto the picture.
4. Fix the edge. Expand grows the outline to take in hair the cut-out missed; set it below zero and it shrinks the outline to drop a halo of the room. Feather softens the edge. Each goes up to a twentieth of the picture's shorter side, which is already past a person's hair.
5. Paint a fix where it is wrong. If the cut-out misses on a frame, paint the correction onto that frame.
6. Make the light agree. Grade the new background until its light and colour sit with the person. Sharpy can also relight the face to suit the new scene.
7. Play it through. On a 4K test recording, the cut-out holds the speaker's head, glasses, shoulders and raised hands with soft edges.

From Claude or Codex, the same edit is one sentence: "keep the person, put this clip behind them and grow the edge a little."

You do not have to replace the background at all. The effects shelf has a background blur behind the person, which softens the room and leaves the person sharp, and a look can grade the room around the person while their skin stays as it was. Colour grading in Sharpy explains looks that reach around the person.

How do you put text behind a person in a video?

Choose words behind in THE PERSON section, and Sharpy draws the person again over the words, so a title sits in the room and the presenter passes in front of it. The person drawn on top is the exact picture beneath, grade and all, so nothing looks pasted on.

You decide word by word. The words panel has a BEHIND THE PERSON switch for each word, so one word can slip behind a head while the next stays in front, as in reels where a single word disappears behind the speaker and the rest of the line reads across the front. With the words behind him, a 4K recording played back as a 1080 × 1920 reel showed 149 of 150 frames on time, the same as without the cut-out, on the base Mac mini M4.

Sharpy also reads every word back while it is on screen and refuses a word it cannot read whole, suggesting a place where it can; your own instruction can still put it where you ask. And it is not only words: an effect can sit behind the person too. In one test, sparks burst on every beat of a 134 bpm track, 18 of 18 beats, and passed behind the owner without once landing in front of him. Animated captions covers the styling.

When is a green screen still the better choice?

When the edge must be perfect. A green screen gives cleaner results on fine hair, fast motion and see-through things such as glass or smoke, because the software keys a colour it knows instead of judging where a person ends.

For green screen removal, Sharpy keys too. It judges each pixel by the direction of its colour, so a shadow across the screen keys out with the lit cloth beside it, and it keys the way a compositor does, with a garbage matte, the core, the edge and spill suppression, plus choke and light wrap. A keyed clip goes over whatever is beneath it rather than replacing it. On a Mac for free, iMovie removes a green or blue screen too: per Apple's guide, place the clip above another, open the video overlay settings and choose Green/Blue Screen, then use Softness and Clean-up for the edge.

Can CapCut remove background?

Yes. CapCut has an automatic video background remover. On its desktop app it sits under Video, then Remove BG, then Auto removal; in its online editor, under Smart tools, then Remove background, then Auto removal. CapCut's own page calls it free and offers chroma key for green screen footage and a custom removal with brushes for touching up the edge. Sharpy and CapCut compares the two editors more widely.

Sources

Checked on 18 October 2026.

• CapCut: remove video background
• Apple: create a green-screen effect in iMovie on Mac
• Pexels and Pixabay, stock video credited in the video's description