Free tool · no install · works on your phone
Free video converter — any video to MP4 online
MOV from a camera, WebM from a screen recorder, MKV from a download — convert any of them to h264 + AAC MP4 that plays on every device and uploads to every platform.
Preview free · download moves the result into your free Aperture library · 100 MB per file · first 60 s processed
How to convert to mp4 online
- Drop any video into the card.
- Press Convert it.
- Preview the MP4 here, download after a free sign-up.
Why convert to mp4 with Aperture
- h264 + AAC: the format every platform accepts
- Faststart flag for instant streaming playback
- Handles MOV, WebM, MKV, AVI and friends
- Up to 3 minutes per job, free
FAQ
Why MP4?
MP4 with h264 video and AAC audio is the single format supported by every browser, phone, editor and social platform — it ends compatibility problems.
Will converting lose quality?
The output uses CRF 20, visually transparent for most content. Source quality, not the converter, is usually the limit.
My MOV won't play anywhere — will this fix it?
Almost always. The converter re-muxes into a clean faststart MP4 with standard codecs.
More free tools
Need the full studio? Open the Aperture editor — timeline, transcript search, guest review, platform exports — free plan included.