ConvertCove

WEBM file format

WebM video. Open web video (VP8/VP9 + Opus) used by browsers, screen recorders and Chrome.

or drop files here · processed on your device, never uploaded

    What is a WEBM file?

    WebM is an open, royalty-free video format launched by Google in 2010. It uses a subset of the Matroska container with VP8, VP9 or AV1 video and Vorbis or Opus audio. Chrome’s screen recorder, OBS, many browser extensions and YouTube use it.

    Every major browser plays WebM, but iPhones, PowerPoint, many video editors and some messaging apps still handle MP4 far better. That is why WebM to MP4 is one of the most common video conversions.

    Extensions.webm
    MIME typevideo/webm
    Video codecsVP8, VP9, AV1
    Audio codecsOpus, Vorbis
    LicenceRoyalty-free (BSD)
    Developed byGoogle, 2010

    ConvertCove encodes WebM with VP8 video and Vorbis audio, the variant that encodes fastest in the browser.

    Convert WEBM to…

    Every conversion listed works in the converter above: add a WEBM file and pick the target format.

    Convert to WEBM from…

    MP4, MOV, WEBM, MKV, AVI

    Detailed guides: WEBM to MP4

    Part of the video converter · all formats.