Based on the MPEG-4 video traffic of low quality and high quality, a hybrid model is presented to capture the frame size at multiple time scales: the change of scene and fluctuation of bit-rate.
针对MPEG - 4的低质量和高质量两种编码质量的视频源，给出了一种混合模型，此模型在多个时间尺度上反映帧大小的变化：场景的变化和同一场景内码流的波动。
For the first time, such databases now exist at multiple scales, they're stable, and they're ready to use.
现在，这样的数据库终于出现了，它们不但适用于不同领域，而且稳定、随时可供使用。
For the first time, such databases now exist at multiple scales, they're stable, and they're ready to use.
现在，这样的数据库终于出现了，它们不但适用于不同领域，而且稳定、随时可供使用。
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