Video metadata

Reads and strips MP4 / MOV / M4V / 3GP metadata without re-encoding. MP4 is a tree of boxes (ISO/IEC 14496-12), and metadata lives in dedicated containers: moov.udta (Apple-style tags), moov.udta.meta.ilst (iTunes-style: artist, album, cover art), moov.meta (standard ISO), moov.udta.©xyz (iPhone GPS in ±lat±lon/ format), QuickTime uuid boxes with extra camera data. The tool parses the tree, shows what it found (Major brand, duration, capture date in the right timezone, detected software, GPS coordinates, the list of iTunes tags), and a single click removes ALL udta/meta boxes from the entire tree — including at the track level. The media data itself (moof / mdat with the video and audio) is untouched: the video plays back identically on the same devices; the file shrinks by tens of kilobytes. Especially relevant for clips shot on iPhone, Android, GoPro and Insta360: they store the full GPS trail of the shoot inside moov, and once you upload to a social network everyone can see it. Limitations: fragmented MP4 is supported partially (cross-references inside moof are not re-validated); encrypted MP4 (DRM) is not touched. No vendors. Processing happens in the browser, the file never leaves your device.