Related introduction:
1 and MP4 = MPEG-4 files use H264 video codec and AAC audio codec.
2.WebM = WebM file uses VP8 video codec and Vorbis audio codec.
3.Ogg = Ogg file uses Theora video codec and Vorbis audio codec.
Extended data
To realize the extensive application of HTML5 technology, it is necessary to turn these patented products into open products. Taking video format as an example, the two camps are controversial about the setting of video format. One camp is represented by Apple, and the other camp is represented by Opera, Firefox and Google.
The WPEG camp belongs to Apple. Because everyone uses this format, we insist on this format as the standard. However, the WebM camp believes that the WPEG format has not been released, and the openness of HTML5 technical requirements is not up to standard, so it does not agree to use it as a standard format.