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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.
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That is the case with some video file formats, such as WebM (.webm), Windows Media Video (.wmv), Flash Video (.flv), and Ogg Video (.ogv), each of which can only contain a few well-defined subtypes of video and audio coding formats, making it relatively easy to know which codec will play the file.
Royalty-free Yes Yes Yes Yes Yes No Yes No No Vorbis: Lossy: 2000-05 Open source [92] Yes Private No No Tricky [δ] No No No No MP2: Lossy: 1991-12 Patent-free [ε] Yes Yes No Yes Yes Yes Yes No No MP1: Lossy: 1991-12 Expired patents Yes Yes No Yes Yes Yes Yes No No QDesign Music 1 and 2 Lossy: 1998 Proprietary: QuickTime [γ] No Yes No No No ...
Apple and Microsoft support the ISO/IEC-defined formats AAC and the older MP3. Mozilla and Opera support the free and open, royalty-free Vorbis format in Ogg and WebM containers, and criticize the patent-encumbered nature of MP3 and AAC, which are guaranteed to be “non-free”. Google has so far provided support for all common formats.
handbrake is a free (GPL'd) transcoder for Windows, Mac, and Linux; Adobe Premiere Pro can export videos directly in WebM format by using the free fnordware plugin (Win/Mac). For assistance with conversion, consider contacting the following editors: Raul654; Gmaxwell (Linux only) GChriss (Linux only) Makaristos (macOS and Linux) Alton ; Ivo ...
The WebM project site is just another Google site. Should the artikel not refer to Google as WebM seems to be a format convieved by Google and any IP rights on WebM would therefore also belong to google and any (free) licenses given on the format would also be from Google. Google is now mentioned as a sponsor.
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