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Video converters are computer programs that can change the storage format of digital video. They may recompress the video to another format in a process called transcoding , or may simply change the container format without changing the video format.
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.
Some containers only support a restricted set of video formats: DMF only supports MPEG-4 Visual ASP with DivX profiles. EVO only supports MPEG-4 AVC, MPEG-1 Video, MPEG-2 Video and VC-1. F4V only supports MPEG-4 AVC, MPEG-4 Visual and H.263. FLV only supports MPEG-4 Visual, VP6, Sorenson Spark and Screen Video. MPEG-4 AVC in FLV is possible ...
Original file (WebM audio/video file, VP8/Vorbis, length 3 min 20 s, 1,920 × 1,080 pixels, 2.06 Mbps overall, file size: 49.08 MB) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
Original file (WebM audio/video file, VP9/Opus, length 58 s, 1,920 × 1,080 pixels, 2.58 Mbps overall, file size: 17.83 MB) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
Original file (WebM audio/video file, VP8/Vorbis, length 3 min 0 s, 1,280 × 1,024 pixels, 682 kbps overall, file size: 14.61 MB) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
Note that a video file normally contains both video and audio content, each encoded in its own format. The browser has to support both the video and audio formats. See HTML audio for a table of which audio formats are supported by each browser. The video format can be specified by MIME type in HTML (see example). MIME types are used for ...
libvpx is a free software video codec library from Google and the Alliance for Open Media (AOMedia). It serves as the reference software implementation for the VP8 and VP9 video coding formats, and for AV1 a special fork named libaom that was stripped of backwards compatibility.