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html5 video element supports three video formats: 1, MP4 format, is a set of compression coding standards for audio and video information;2, WebM format, is proposed by Google, is an open, free media file format;3, Ogg format.

Operating environment of this tutorial: Windows 7 system, HTML5 version, Dell G3 computer.

HTML5 provides a standard for playing video files, which can be defined using tags, such as movie clips or other video streams.

Currently, elements support three video formats: MP4, WebM, and Ogg.

Format MIME-typeMP4video/mp4WebMvideo/webmOggvideo/ogg

MP4 = MPEG4 files using H264 video codec and AAC audio codec

MP4 is a set of compression coding standards for audio and video information, formulated by the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC) under the "Moving Picture Experts Group"(MPEG), the first edition was adopted in October 1998, the second edition was adopted in December 1999. The MPEG-4 format is primarily used for streaming over the Internet, optical discs, voice transmission (video telephony), and television broadcasting.

WebM = WebM files use VP8 video codec and Vorbis audio codec

WebM is an open, free media file format developed by Google. WebM video format is actually a new container format developed based on Matroska (MKV) container format, which includes VP8 video tracks and Ogg Vorbis audio tracks, in which Google has its own VP8 video encoding technology with a similar BSD license open source, Ogg Vorbis is originally an open format. WebM standards for web video are more open source and HTML5-based, and WebM aims to develop high-quality, open video formats for the web that are open to everyone, with a focus on solving the core web user experience of video services. Google says the WebM format is fairly efficient and should work smoothly on netbooks, tablets, handheld devices, etc.

Ogg = Ogg files use Theora video codec and Vorbis audio codec

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