3G2 is a digital multimedia container format developed by the Third Generation Partnership Project (3GPP). It can save both video and audio tracks, just like its sister format, 3GP. However, it’s the updated version of the former because it is designed for CDMA (Code Division Multiple Access) mobile phones, whereas 3GP is intended for GSM phones.
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MXF (Materia Exchange Format) is an audiovisual container format developed by SMPTE. It contains full metadata and timecode support and is considered as the future standard for audio and video applications. Theoretically, MXF can streamline data between different platforms, like servers and digital cameras.
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SMPTE (Society of Motion Pictures and Television Engineers)