Are files uploaded for this tool?

This browser tool processes the selected media locally on this device. The file is not uploaded to ArtPlayer servers for this workflow.

Will the export have a watermark?

No. ArtPlayer browser tools do not add watermarks to exported files.

Why can processing take time?

The work runs in your browser, so speed depends on your device, browser, memory, source size, and the export settings needed for the result.

Which browsers work best?

Recent Chrome, Edge, and other modern Chromium browsers usually work best for heavier browser media processing.

What should I try if a large file fails?

Try a smaller source, close other heavy tabs, reduce resolution or duration first, and keep the tab open until the export finishes.

Can I blur a specific part of a video?

Yes. Place the privacy blur region over a face, license plate, username, or other sensitive area, then export a new MP4 with the blur burned into the frames.

Is this faster than FFmpeg filters?

This tool uses Mediabunny, WebCodecs, and canvas rendering instead of FFmpeg.wasm filters, which keeps the local workflow lighter for region blur.

Can I blur part of a video for privacy?

Yes. Apply blur to the selected area and export a new MP4 with the blur baked in.

Should I use blur or pixelation?

Use blur for a softer privacy effect and pixelation when you want a more visibly obscured area.

Browser video tool

Blur Part of a Video

Local processingMediabunnyNo upload

Blur part of a video online for free. Hide faces, license plates, usernames, or sensitive details and export an MP4 locally without uploading.

Source video

Drop a file here, or click to choose

0:00.0 / 0:00.0

Blurred area1 area

Blur radius14px

How it works

Three steps to finish the browser workflow.

1
Choose a video file
Blur part of a video online for free. Hide faces, license plates, usernames, or sensitive details and export an MP4 locally without uploading.
2
Add area
Drag or resize 1 privacy area on the preview.
3
Blur video
Choose a video, place a rectangular privacy blur area over the preview, then ArtPlayer renders that specific region into a new MP4 locally.

Everything you need

Core details about privacy, browser support, output, and practical limits before you start.

Manual privacy area

Move and resize one rectangular region for faces, plates, names, screens, or other sensitive details.

Soft blur effect

The selected area is blurred frame by frame for a softer privacy mask.

Local workflow

The video is processed in your browser with Mediabunny, WebCodecs, and canvas rendering.

Input, output and limits

Check supported inputs, output formats and usage requirements before you start.

Supported input	Video files such as MP4, MOV and WebM. Container and codec support depends on the browser and processing runtime.
Output result	Export options: MP4.
Processing and privacy	Processing runs on this device. Source media is not uploaded for this workflow.
Browser requirements	A browser with the decoding and encoding capabilities needed by the selected media. Available codecs vary by device.
Usage limits	Processing capacity depends on duration, dimensions, codecs, settings and available device memory. Large inputs can fail; keep the original file.
Can I blur a specific part of a video?	Yes. Place the privacy blur region over a face, license plate, username, or other sensitive area, then export a new MP4 with the blur burned into the frames.