Convert WebM to MP4
Screen recordings and downloads that only browsers open, moved to the container everything opens.
Runs in your browser. Your file never leaves your computer.
- AfterEditors, phones, TVs, all fine
- With hardwareMuch faster than playback
- WithoutEstimate shown before start
- ExtrasTrim, resolution cap
Browser-based screen recorders and web downloads produce WebM, and then an editor, a phone or a projector refuses it. Conversion to MP4 re-encodes the VP9 or AV1 video to H.264 with AAC audio, the pairing with universal reach. With a hardware H.264 encoder this runs quickly; without one the page estimates the software-encode time before you commit. Audio converts alongside, trim and downscale are available, and processing never leaves your browser.
Questions
Why do editors reject WebM recordings?
Many editing tools never added VP9 decode support. H.264 in MP4 is the interchange format the whole industry reads.
Will quality drop in conversion?
One re-encode at a healthy bitrate is visually transparent for screen content and ordinary footage.
How long will my file take?
With hardware H.264, well under playback time. Without it, the page tells you the realistic figure before starting.
Related conversions
- MP4 to WebMHardware VP9 or AV1 encoding for the toolchains and platforms that want open-format video.
- WebM to M4AMeeting captures and browser recordings reduced to their soundtrack, converted to AAC that plays anywhere.
- WebP to MP4A silent video that loops like the animation but weighs a fraction and plays in every player and timeline.
- GIF to MP4The classic upgrade. Video codecs were built for motion; the same clip drops dramatically and plays everywhere.
- MOV to MP4iPhone and Mac footage made universal. Already H.264? It repackages in seconds without touching a frame.
- MKV to MP4The container TVs and phones refuse, repackaged or re-encoded as the one they accept. Often instant.
- AVI to MP4Old codecs decoded in software by a bundled decoder, re-encoded to H.264 that plays on today's everything.
Part of convert video in your browser. Every other conversion is on the conversions index.