Keeping your room out of the video
The reason people do not record from home is rarely the recording. It is the room. A camera bubble is small, but it is sharp, and it shows the bed, the kitchen and whoever walks past. All three have a fix that takes one tap.
Blur, when the room is fine but busy
Blur keeps the shape of where you are without any of the detail. It reads as deliberate rather than as hiding something, and it survives movement better than a replacement — if you lean out of frame, a blurred edge is forgiving where a hard cut-out is not.
A replacement image, when the room is wrong
Putting an image behind you removes the room entirely. Choose something plain. A busy photograph competes with the app you are showing, and the edge around your hair is more visible against detail than against a flat colour.
Removal, when you want only yourself
Cutting the background out completely leaves you over the app itself. It is the most striking option and the least forgiving: it wants even lighting and a still-ish subject, or the edge flickers.
Framing does half the work
Before reaching for any of it, move. A wall behind you at arm's length beats any processing, costs nothing, and never flickers. A bubble that shows your head and shoulders shows very little room to begin with.
Check it before the take, not after
The preview in Settings shows the camera and the processed result side by side, so you can see exactly how much of the room survives. Look at it once; it takes a second and saves a re-record.
Does a background cost performance?
It is a second pass over each camera frame. On recent devices it is not noticeable in the recording.
Can I use a video as the background?
Yes, as well as an image — fit or fill, and it loops.
