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Chapter 8. Natural Video Coding > Special Video Coding Tools

8.5. Special Video Coding Tools

This section describes the MPEG-4 special video coding tools. They are the interlaced, error-resilience, reduced resolution, sprite coding, and high-quality texture coding tools. In addition, the MPEG-4 short video header operational mode is presented in this section.

8.5.1. Interlaced Coding

Interlaced video is widely used in TV broadcasting. It still represents a good compromise between frame rate and spatial resolution and there is substantial legacy content. Acknowledging this fact, MPEG-4 has adopted a set of tools to support the compression of arbitrarily shaped interlaced VOPs. Some of these tools are extensions of the MPEG-2 interlaced video coding tools [MPEG2-2], such as frame/field DCT, frame/field motion compensation, and interlaced direct mode. In addition, some MPEG-4 video coding tools have also been extended to support interlaced VOPs, such as field padding and AC/DC prediction. Some of these tools will be briefly described in this section. For more details about all of the interlaced coding tools and their performance, please refer to [MPEG4-2, PXEL00].


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