What is a .WebM file?
WebM is an open, royalty-free video format designed for the web, using VP8, VP9 or AV1.
- Did you know
- Google released WebM in 2010 to give the web a royalty-free video format.
- WebM is a trimmed-down subset of the Matroska container, reusing its flexible binary structure for the web.
- Its audio is carried by the open Vorbis or Opus codecs, keeping the whole stack free of licensing fees.
- Google unveiled WebM at its developer conference and released the underlying VP8 codec under a permissive open licence.
- On the web a .WebM file is served with the MIME type
video/webm.
- What Analyser shows you
- Read the container, codec, resolution, and frame rate of MP4, MOV, MKV, AVI, and WebM video, step through frames, and extract the audio track. Raw H.264/H.265 elementary streams (.h264/.265) are remuxed to MP4 in-browser so they play too.
- Open a .WebM file
- Drag a .WebM file onto the Analyser home page (or tap to pick one). It opens entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.