Media workspace

Open workspace

A private mini studio. FFmpeg runs locally after a one-time core download — files never leave this tab.

Runs in your browser. Media is processed with FFmpeg WASM in this tab — nothing is uploaded to BrowserSpaces. The engine preloads in the background while you set up the tool.

Load once

Video or audio in memory.

Trim + format

Cut a region, choose output.

FFmpeg local

Self-hosted WASM core.

Private

No upload to BrowserSpaces.

Use the tool

Still images? Image convert. Lightweight audio? Audio convert.

Media file

No file selected.

First run downloads ~30 MB WASM core (cached by the browser).

Start (s)End (s)Format

How it works

Decode → edit → encode

On first use we load FFmpeg.wasm from a public CDN (cached by your browser afterward), write your file into the virtual FS, run ffmpeg commands, and hand you a download blob — the media itself never leaves your tab.

Before you start

First run downloads ~30 MB WASM core (cached by the browser).
Very long 4K clips may run out of memory — compress or shorten first.

Three steps

1
Add a file
Keep size reasonable (see soft limits).
2
Trim & format
Set start/end and container.
3
Export
Download the result.