Convert 3G2 to AVI — Free Online Converter

AVI (Audio Video Interleave) is Microsoft's classic multimedia container from 1992, still widely used in legacy Windows environments, surveillance systems, and older video editing software. Converting 3G2 to AVI transforms mobile phone recordings from the CDMA2000 container into the RIFF-based AVI format, ensuring compatibility with Windows-centric playback and editing workflows that do not support mobile video containers.

While AVI is an aging format, it remains the expected input for many industrial and enterprise video systems. Surveillance DVRs, medical imaging viewers, and legacy video editing suites like VirtualDub often require AVI input. Converting old 3G2 phone recordings to AVI makes them accessible in these specialized environments.

AVI enjoys near-universal support on Windows systems going back to Windows 3.1, and many legacy applications only accept AVI input. If you need to import old CDMA phone recordings into VirtualDub, Windows Movie Maker (legacy), industrial monitoring software, or any system built around the RIFF/AVI container, this conversion is necessary.

AVI also supports uncompressed video streams, making it useful when you need a codec-neutral intermediate format. Some video processing pipelines — particularly in forensics and medical imaging — prefer uncompressed AVI because it eliminates all codec dependencies and produces deterministic output for analysis.

FFmpeg re-encodes the 3G2 H.263 or MPEG-4 Part 2 video to MPEG-4 Part 2 (or optionally DivX/XviD) inside the AVI RIFF container. Audio is transcoded from AMR to MP3 at 128 kbps, since AVI does not natively support AMR audio. The AVI container uses interleaved audio/video chunks with an index at the end of the file. For maximum compatibility with legacy players, the output uses the standard AVI 1.0 format rather than OpenDML (AVI 2.0).