Convert AIFC to MP4 — Free Online Converter

AIFC (AIFF-C) is Apple's compressed audio interchange format from the late 1980s, a relic of classic Mac OS supporting IMA ADPCM, MACE 3:1/6:1, G.711, and uncompressed PCM. MP4 (MPEG-4 Part 14) is the universal multimedia container, the most widely supported media format on Earth — playable on every smartphone, browser, smart TV, and operating system.

Converting AIFC to MP4 produces an audio-only MP4 file with AAC or ALAC audio. The result is functionally identical to an M4A file (which is simply MP4 with an audio-specific extension). This conversion takes the most obscure Apple audio format and delivers it in the most universally compatible container available.

AIFC is recognized by essentially no modern software or device. MP4, in stark contrast, is the default media format for the web, mobile, and desktop. Every web browser, every smartphone OS, every smart TV, and every media player on every platform supports MP4 natively. Converting AIFC to MP4 achieves maximum possible compatibility.

MP4 also provides robust metadata support, efficient streaming with the moov atom at file start, and compatibility with content delivery networks and social media platforms. For any use case involving sharing, streaming, or broad distribution of audio content, MP4 is the safest container choice.