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WebM is an audiovisual media file format. [5] It is primarily intended to offer a royalty-free alternative to use in the HTML video and the HTML audio elements. It has a sister project, WebP , for images.
VP8 is a traditional block-based transform coding format. It has much in common with H.264, e.g. some prediction modes. [8] At the time of first presentation of VP8, according to On2 the in-loop filter [9] and the Golden Frames [10] were among the novelties of this iteration.
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Original file (WebM audio/video file, VP9/Opus, length 14 s, 1,082 × 1,920 pixels, 8.59 Mbps overall, file size: 14.69 MB) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
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The WebM container .webm is mostly used on online video platforms (e.g. YouTube), and is usually treated as a video file by operating systems & media players. Even if a WebM file contains only Opus audio and no video, some music players do not recognize WebM files as audio files and do not support reading of file metadata. [72]
libvpx was released as free software by Google on May 19, 2010, after the acquisition of On2 Technologies for an estimate of over 120 million US dollars. [ 2 ] [ 4 ] In June 2010, Google amended the VP8 codec software license to the 3-clause BSD license [ 5 ] [ 6 ] [ 7 ] after some contention over whether the original license was actually open ...
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