WebM file is a video and audio file format designed for the web. It is an open, royalty-free, media file format that is used to compress the audio and video file formats. All the video or audio files having .webm file extension are WebM files. It defines the audio and video file formats along with the file container structure. They are the files containing audio and video streams, compressed by the VP8 or VP9 codecs for the video stream and Vorbis or Opus codecs for the audio streaming files.
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