MPEG-4 visual is divided into two sections. MPEG-4.2 includes the original MPEG-4 video codecs discussed in this section. MPEG-4.10 specifies the “advanced video codec,” also known as H.264, and is discussed in the next section.
The visual specifications are optimized for three primary bit-rate ranges:
- less than 64 kbps
- 64–384 kbps
- 0.384–4 Mbps
For high-quality applications, higher bit-rates are possible, using the same tools and bitstream syntax as those used for lower bit-rates.
With MPEG-4, visual objects (video codecs) use specific combinations of tools to efficiently represent different types of visual objects. Profiles use specific combinations of visual object types to efficiently service a specific market segment. ...