About H.264 Format
H.264 is a video compression technology, or codec, that was jointly developed by the International Telecommunications Union (as H.264) and International Organization for Standardization/International Electrotechnical Commission Moving Picture Experts Group (as MPEG-4 Part 10, Advanced Video Coding, or AVC). Thus, the terms H.264 and AVC mean the same thing and are interchangeable.
H.264/AVC is a major video compression scheme and is widely used in a number of applications as it provides a far more efficient codec than any other algorithm. Its main advantage is that it can encode video with 3 times fewer bits than any other comparable format. This enables it to fit more television programs into a given channel bandwidth, deliver quality video over limited bandwidth channels (like 3G mobiles), and fit a high-definition video onto a standard DVD.
As a video codec, H.264 can be incorporated into multiple container formats, and is frequently produced in the MPEG-4 container format, which uses the .MP4 extension, as well as QuickTime (.MOV), Flash (.F4V), 3GP for mobile phones (.3GP), and the MPEG transport stream (.ts). Most of the time, but not all the time, H.264 video is encoded with audio compressed with the AAC (Advanced Audio Coding) codec, which is an ISO/IEC standard (MPEG4 Part 3).
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