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14.11. Summary

This chapter has illustrated how the MPEG-4 standard specifications, explained in the previous chapters, were used in the real world to implement an actual player that could demonstrate the MPEG-4 experience. This chapter emphasized the role of MPEG-4 Systems as one of the most innovative parts of the MPEG-4 standard, as was introduced in Chapters 3, 4, and 7. The chapter also has shown how the audiovisual decoders, introduced in Chapters 8 through 12, could be integrated into the player.

After presenting the concept of reference software in MPEG-4, this chapter elaborated on the software architecture of the MPEG-4 player. The chapter was written by members of the implementation group of this specific software and, as such, does not do full justice to the reference software effort as a whole. Nevertheless, MPEG-4 Systems, as the part that most differentiates MPEG-4 from other media representation standards and the core of the player implementation, well deserves this focus. A special attention was given to the trickiest parts of the implementation, hoping that the reader who tries to understand the reference software, designs his or her own implementation, or just wishes to deepen his or her knowledge of the standard will find these explanations useful.


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