Convert WebM to iPhone Video — Free Online Converter

WebM uses VP8/VP9/AV1 video with Opus/Vorbis audio — codecs with limited native support on iPhone. While Safari on iOS 14+ can play VP9 WebM, the native Photos app, iMessage video sharing, and hardware decoder path are optimized for H.264/H.265. The iPhone Video preset produces Apple-optimized video that works flawlessly across all iPhone features.

iPhone's native video experience is built around H.264/H.265. WebM files cannot be shared via iMessage, added to the Photos library natively, or used with Cinematic mode or Live Photo features. AirDrop also handles MP4/MOV more reliably than WebM. Converting to the iPhone preset ensures full integration with iOS features.

Older iPhones (pre-iPhone 12) have no VP9 support at all, making conversion mandatory for universal iPhone compatibility.