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3GPP : GSM Network, Video: MPEG-4, H.263, Audio: AAC, AMR 3G2 : CDMA Network, Video: MPEG-4, h.263, Audio: AAC, AMR, QCELP MPEG-4 : allows you to optimize every part of the movie, while maintaining compatibility. MPEG-4 contains a wide variety of compression technologies to deliver the best performance for every kind of content.
