15.5. Coding Efficiency for Low and Medium Bit-Rate Test
Although not the only driving force, coding efficiency was a major requirement [N4319] for MPEG-4 as for previous video coding standards. The MPEG-4 Requirements document explicitly states in the “Object Quality and Fidelity” requirement:
Quality in MPEG-4 shall be as high as possible. This means that MPEG-4 shall provide a subjective video quality that is better than the quality achieved by the available or emerging standards in similar conditions.
In this section the results of the formal subjective verification test made to evaluate the performance of MPEG-4 video coding tools in terms of coding efficiency regarding MPEG-1 Video [MPEG1-2] at low and medium bit rates will be presented ...
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