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A quick way to understand who this helps, what it solves, and where it connects next.
People adapting portrait and landscape clips for social placements, storefronts, and promo video layouts
Making one clip fit a new canvas without cropping away the subject
Capture blurred-fill framing intent with a practical browser-first video page
Cleanor Labs
These sections explain the job in plain language and set expectations for what the tool should do well.
To add a blurred fill, upload one video and pick the target canvas — portrait, square, or landscape — that matches where the clip will be posted. The tool places your original frame in the center and fills the surrounding space with a blurred, enlarged copy of the same video, then exports a new MP4 at the chosen size.
You control the blur strength, so the background can be a subtle soft fill or a heavier blur that pushes focus onto the centered clip. The audio track from the source video is preserved on export, so the result is ready to post as-is.
All processing happens locally in your browser. The video you upload never leaves your device, which keeps unpublished or client footage private.
Blurred background fill is a practical alternative to hard cropping when the source aspect ratio does not match the destination. Instead of cutting off part of the frame to fit a vertical or square slot, the blurred fill keeps the whole original frame visible and fills the empty space attractively.
Note that this is a fill effect, not subject segmentation. Video Background Blur creates a blurred copy of the frame behind your clip — it does not use AI to isolate a person from the background. For a clean filled frame on social or storefront placements, that fill approach is usually exactly what you want.
Short answers for the questions people usually have before trying a utility like this.
No. Video Background Blur creates a blurred fill behind the original frame, not AI subject segmentation. The full original frame stays visible over the blurred canvas.
Yes. Portrait, square, and landscape presets are included, along with manual size control, so the export matches where you plan to post.
Yes. The MP4 export preserves the original audio from your video.
No. Video Background Blur runs entirely in your browser. The clip is processed locally on your device and never uploaded.
Yes. Video Background Blur is free to use with no account and no upload required.
Every tool on Cleanor is free with no sign-up, no credits, and no limits. Files are processed privately in your browser. Looking for on-device phone cleanup and Premium features? That lives in the Cleanor app.
Place the source video over a blurred canvas to fit portrait, square, or landscape layouts.