A higher bit rate is required to code the frames in separate subsequences as opposed to a single sequence, since they are spaced farther apart in time and prediction does not perform as well.

• 更高的比特率要求将帧按照独立的后续帧进行编码以避免形成单一序列，因为单一序列在时间间隔较远以及也不能表现出良好的预测性能。