Convert AIF to MKV — Free Online Converter

AIF is Apple's uncompressed PCM audio format from 1988, storing big-endian audio data in an IFF-based container designed for professional use on classic Mac OS. MKV (Matroska Video) is an open, flexible multimedia container developed by the Matroska project, capable of holding virtually any combination of video, audio, subtitle, and metadata tracks in a single file.

Converting AIF to MKV places audio content inside a video container. Since AIF contains only audio, the resulting MKV file will be audio-only — no video stream is generated. Matroska is particularly suited for this because it supports virtually every audio codec (PCM, FLAC, AAC, Opus, Vorbis, MP3) and preserves rich metadata including chapter markers and tags.

MKV is the preferred container for complex media projects. Converting AIF to MKV is useful when assembling a Matroska project where audio tracks need to be in the same container format as other media assets. Video editors, media servers like Plex and Jellyfin, and Matroska-based workflows may require all assets in MKV format.

MKV also offers superior metadata capabilities over AIF — chapter markers, multiple audio tracks, tags, and attachments (like cover art as separate files). For long-form content like audiobooks, lectures, or concert recordings, MKV's chapter system provides precise navigation that AIF's simpler container cannot match.