Convert AIF to AVI — Free Online Converter

AIF is Apple's uncompressed PCM audio format from 1988, storing audio in big-endian byte order within an IFF-derived container. Developed for professional use on classic Mac OS, AIF preserves full audio fidelity at CD quality or higher. AVI (Audio Video Interleave) is Microsoft's multimedia container from 1992, designed to hold interleaved audio and video streams within a RIFF structure.

Converting AIF to AVI wraps audio content into a video container. Since AIF contains only audio, the resulting AVI file will be audio-only — no video stream is generated. This produces a valid AVI file that media players will handle as audio, though the video container adds some overhead compared to audio-specific formats.

Some legacy video editing workflows, multimedia authoring tools, and industrial control systems accept only AVI files as input. When these systems need to process audio from Mac sources, wrapping AIF audio in an AVI container provides compatibility without requiring the target system to understand the AIFF format. Broadcasting equipment and legacy Windows media servers sometimes mandate AVI for all media assets.

The AVI container also allows the audio to be muxed with a video track later in the production pipeline. By pre-converting AIF to AVI, the audio is already in the correct container for downstream video assembly workflows that operate exclusively with AVI.