WEBM to MP4

Why convert WEBM to MP4 with Tools Root

WEBM works great in modern browsers, but not every video editor, older device, or platform recognizes it as reliably as MP4. This free WEBM to MP4 converter handles that conversion directly in the browser.

Genuine re-encoding for real compatibility

The WEBM file's video and audio are properly decoded and re-encoded into real MP4 format using a real FFmpeg engine, producing a file that plays correctly virtually anywhere, not just a renamed container.

A free WEBM to MP4 converter for maximum compatibility

Screen recordings, downloaded web video, and browser-based exports commonly save as WEBM — efficient for the web, less universally recognized in editing software and on older devices. This tool converts to the far more broadly compatible MP4 format at no cost, with no video length limit.

Common use cases

Converting a screen recording from WEBM to MP4 for editing in video software that expects MP4, preparing downloaded web video for compatibility with an older device, converting WEBM clips for a platform that specifically requires MP4, standardizing a mixed-format video collection into consistent MP4 files, or converting WEBM footage for compatibility with video editing timelines.

Related conversions

Need to go the other direction? MP4 to WEBM handles that reverse conversion for smaller, web-optimized output.

Why WEBM isn't as universally supported as MP4

MP4's long-established, broad hardware and software support made it the de facto standard most devices, editors, and platforms still default to. WEBM, despite strong technical qualities, particularly for web streaming, simply hasn't reached that same universal baseline outside browser-based playback, which is the practical reason conversion is often necessary.

Converting between two modern video codecs

Since WEBM's VP9 and MP4's typical H.264 are both real, modern, efficient video codecs, converting between them is a genuine re-encode rather than a lossless container swap — a real, if generally modest at reasonable quality settings, additional processing step worth being aware of.