3G2 is a multimedia file format used for storing video and audio content. It is commonly used by mobile phones and portable devices for recording and playing back videos. 3G2 files are compressed and optimized for mobile devices, offering a balance between video quality and file size, making them suitable for mobile streaming.
AVI is a video format developed by Microsoft that stores both video and audio data in a single file container. It supports multiple codecs and is known for delivering high-quality output, though files can be large. AVI is compatible with most media players and remains a reliable format for local video playback.