3GP is a multimedia container format defined by 3GPP for use on 3G mobile phones. It is a simplified version of MPEG-4 Part 14 (MP4). 3GP files have the filename extension .3gp or .3g2. 3GP stores video streams as MPEG-4 or H.263, and audio streams as AMR-NB or AAC-LC formats. 3GP files are always big-endian. 3GP also describes image sizes and bandwidth, so content is correctly sized for mobile display screens. 3GP files are viewable on a PC using QuickTime or RealPlayer.

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