About Convert Video
Transcode video between MP4, WebM, MKV, and AVI using a real FFmpeg build running as WebAssembly in your tab. Pick a quality preset and watch the live encoder log. Everything happens locally in your browser: nothing is uploaded, stored, or logged. This focused Convert Video page is designed for creators and teams making a video compatible with a browser, editor, presentation, or messaging app. It opens directly to the working tool, rather than hiding the function inside a general converter or account dashboard.
A WebAssembly build of FFmpeg reads the media from browser memory, runs the selected codec operation on your CPU, and writes the result back to the tab. Your filename and file contents stay on the device. There is no upload queue, temporary cloud copy, account record, or server-side conversion job to delete later. That makes the tool practical for personal records, work material, and drafts that should not be handed to an unknown processing service.
The important limitation is straightforward: The FFmpeg engine is roughly 30 MB and downloads once per session. Large or long files are limited by your device's memory. Knowing that boundary helps you choose the right source file and check the result before relying on it. Processing speed and maximum size depend on your browser and available device memory, which is the honest trade-off for doing the work locally.
FileForge charges nothing for this tool and does not add a watermark. Once the page and its processing engine have loaded, the operation can continue without sending the file over the network. Use the numbered steps below, download the result, and review it before replacing an original file.