As described previously, MP4 is a particular part of the MPEG-4 file format for audio and video compression-decompression. MP4 is a container, which allows a range of different digital data streams to be encoded for transport and playback. What makes MP4 so popular is it is predominately used to carry what’s known as the H.264/AVC (Advanced Video Coding) codec (the algorithm that actually processes the original large file size media into a tiny package that can yield very high quality at very low bit rates if necessary). Because it’s so versatile within the range of parameters that can be programmed, H.264 is rapidly becoming the go-to codec both for Internet streaming (which wants lower bit rates) and even for very high-end products like Blu-ray discs (which handle extremely high bit rates.) Also advancing H.264’s adoption is its being embedded in the impending conversion to HTML5, so web browsers will be able to transport high quality video and audio more easily and reliably.
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