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Compared with MPEG2, what Advantages and Disadvantages MPEG4 Has?

advantages disadvantages MPEG2 MPEG4
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Compared with MPEG2, what Advantages and Disadvantages MPEG4 Has?

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Advantages: (1) When encoding bit rate is lower than 2~3 Mbps, hardware-compressed MPEG4 can easily achieve better video quality than MPEG2 (2) Lowest bit rate encoding is normally lower than MPEG2 Disadvantages: (1) Each hardware MPEG4 encoder will create at least slightly different format of video, thus making playback difficult.

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