Convert any video file to AIFF format online for free. Fast, secure, and easy-to-use video to AIFF converter with no software installation required.
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Max file size: 50 MBMax duration: 30 min
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Drag and drop your MP4 file, or click to browse for it.
Choose AIFF as the output and click Convert. The conversion runs on our servers, so your device does none of the work.
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Your file is used only to make your conversion. It is never published or shared, and the download link expires after one hour.
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How the two formats differ on the things that change your result.
| Specification | MP4 (source) | AIFF (result) |
|---|---|---|
| Container | MPEG-4 Part 14 | IFF / AIFF |
| Developed by | MPEG | Apple |
| Introduced | 2003 | 1988 |
| Audio codecs | AAC, MP3, ALAC | PCM |
| Compression | Depends on codec | Uncompressed |
| Approx. file size | 38–150 MB per minute | 10–32 MB per minute |
| Metadata / tags | Container tags | ID3 chunk (limited) |
| Licensing | Patent-licensed | Royalty-free |
| Plays natively on | Native: Web browsers, Windows, macOS, iOS, Android, Smart TVs | Native: macOS, iOS · Needs a player: Windows, Android, Web browsers |
| Best for | web delivery, social media uploads, sharing with anyone | studio editing, the Apple ecosystem, mastering |
This extracts the audio and discards the video entirely. The soundtrack inside a MP4 file is typically AAC, and it is re-encoded to PCM on the way out.
Expect a much smaller file. Video accounts for most of the bytes, so about 94 MB per minute becomes roughly 21 MB per minute of AIFF.
Choosing lossless AIFF means nothing further is lost, though it cannot exceed the AAC track stored in the source video.
Subtitles do not survive audio extraction, since an audio container has nowhere to store them.
When a video holds several audio tracks, the main one is extracted; alternate language tracks are not merged into the result.
Extracting AIFF audio from a MP4 video pulls the soundtrack out of the MPEG-4 Part 14 container and writes it as a standalone IFF / AIFF file. The video stream, which holds most of the data, is discarded.
Developed by MPEG in 2003, MP4 carries H.264, H.265, or AV1 video and AAC, MP3, or ALAC audio. That combination sets the upper bound on what any conversion can preserve.
AIFF was introduced by Apple in 1988. It holds uncompressed audio (PCM) and plays natively on macOS and iOS.
After converting your file, you can use Scriptivox transcription services to convert your audio to text. Perfect for meetings, interviews, podcasts, and more.
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