A method of optimizing decoding of MPEG4 compliant coded signals is provided, comprising: disabling processing for non-main profile sections; performing reference frame padding; performing adaptive motion compensation. The method of decoding further including performing fast IDCT wherein an IDCT process is performed on profile signals but no IDCT is performed based on whether a 4x4 block may be all zero, or only DC transform coefficient is non-zero, and including CAVLC encoding of residual data. Reference frame padding comprises compensating for motion vectors extending beyond a reference frame by adding to at least the length and width of the reference frame. Adaptive motion compensation includes original block size compensation processing for chroma up to block sizes of 16 x 16.
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机译：提供了一种优化对符合MPEG4的编码信号的解码的方法，该方法包括：禁止对非主要配置文件部分的处理;以及执行参考帧填充;执行自适应运动补偿。解码的方法还包括执行快速IDCT，其中基于4x4块是否全为零，或者仅DC变换系数为非零，对配置文件信号执行IDCT处理，但不执行IDCT，并且包括残差的CAVLC编码数据。参考帧填充包括通过至少添加到参考帧的长度和宽度来补偿延伸超过参考帧的运动矢量。自适应运动补偿包括原始色块大小补偿处理，用于色度，最大色块大小为16 x 16。
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