||3g2 was originally developed by the 3rd Generation Partnership Project 2. It is an audio and video format for use on 3G phones. It can also be played on some 2G and 4G phones. It is designed for transmitting multimedia files over the internet and is mainly used for viewing videos on mobile phones. 3G2 is also known as 3GPP2 which is based on the MPEG-4 standard which was derived from Apple's QuickTime. You are probably familiar with it if you have an Iphone.
||Convert 3G2 file
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||3g2 is very much like MPEG-4 Part 14 (MP4) but a much more simplified version of it. It is designed to reduce bandwidth requirements in order to accommodate mobile phones. It is also designed to decrease storage - it stores video streams as MPEG-4 Part 2 or MPEG-4 part 10. It stores audio streams such as AMR-WB, AMR-NB, AMR-WB+, HE-AAC or AAC-LC. The idea is that 3g2 stores and transfers the most significant bytes first.
||Apple QuickTime Player
Microsoft Media Player Classic
VideoLAN VLC Media Player
||3rd Generation Partnership Project 2
||Find out about more 3G technologies
A handy troubleshooting guide for trying to open 3g2 files
Convert 3G2 file