![]() These subsets, called Profiles, limit the size of the tool set a decoder is required to implement. ![]() Subsets of the MPEG-4 tool sets have been provided for use in specific applications. With the help of standard procedures, MPEG-4 data can be interpreted and transformed into other signal types compatible with any available network. MPEG-4 is efficient across a variety of bit-rates ranging from a few kilobits per second to tens of megabits per second. To deal with this, the standard includes the concept of profiles and levels, allowing a specific set of capabilities to be defined in a manner appropriate for a subset of applications. This means that there are probably no complete implementations of the entire MPEG-4 set of standards. ![]() ![]() The key parts to be aware of are MPEG-4 Part 2 (including Advanced Simple Profile, used by codecs such as DivX, Xvid, Nero Digital and 3ivx and by QuickTime 6) and MPEG-4 part 10 (MPEG-4 AVC H.264 or Advanced Video Coding, used by the x264 encoder, Nero Digital AVC, QuickTime 7, and high-definition video media like Blu-ray Disc ). ![]()
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