Convert MP4 to AIFF
Extract the audio from your MP4 video files and save it as AIFF, directly in your browser.
How to convert video to audio in 3 steps
Choose a MP4 video file.
Click convert to AIFF.
Download your AIFF audio.
Format descriptions
MP4 — MP4 is the most widespread and compatible video container. It supports H.264/HEVC and AAC codecs, making it ideal for streaming, the web and mobile devices.
AIFF — AIFF is Apple's lossless audio format, similar to WAV. It delivers lossless quality with large files and is used in professional settings.
Technical comparison: MP4 vs AIFF
Technical breakdown of the MP4 and AIFF specifications: compression, colour, transparency and animation support.
| Property | MP4 | AIFF |
|---|---|---|
| Specification | MP4 (MPEG-4 Part 14) | AIFF (Audio Interchange File Format) |
| Media type | Video | Audio |
| Compression | Lossy · H.264 / HEVC + AAC | Uncompressed · Linear PCM |
| Color space / bit depth | YUV 4:2:0, 8-10 bit | 16/24/32-bit float |
| Transparency | Not supported | Not applicable |
| Animation | Yes (animated) | No (static) |
| Best for | MP4 is the most widespread and compatible video container. It supports H.264/HEVC and AAC codecs, making it ideal for streaming, the web and mobile devices. | AIFF is Apple's lossless audio format, similar to WAV. It delivers lossless quality with large files and is used in professional settings. |
What happens when converting MP4 to AIFF?
The MP4 data is decoded inside your browser with WebAssembly and re-encoded to the AIFF specification, so no file is ever uploaded to a server. AIFF uses lossy compression: the file gets far lighter, but a small amount of fine detail is discarded in the process. MP4 supports animation while AIFF does not, so only the first frame is kept. Audio is re-encoded with the AIFF codec while keeping the original duration, so audio and video stay in sync.
Frequently Asked Questions
What is video to audio conversion?
Video to audio conversion extracts the sound track from a video file, for example from MP4 to AIFF, keeping only the audio content.
Are my video files uploaded?
No. This tool processes video files directly in your browser. Your video files are never sent to a server.
Which video formats are supported?
This tool converts the audio of MP4 video files to AIFF, all in your browser.
Is it really free and unlimited?
Yes, the tool is completely free and you can convert as many videos as you want, with no limits.
Does it work on mobile too?
Yes, it works on any modern device, including smartphones, tablets and desktop computers.
Which format will the result be in?
The converted file will always be in AIFF format, ready to download and use.
About the video to audio converter
Extract and convert the audio from your MP4 videos to AIFF for free. Everything happens in your browser: your files are never uploaded to a server, and you need no downloads or sign-up to get started.
See also:
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- Convert MP4 to OGGExtract and convert the audio from your MP4 videos to OGG for free. Everything happens in your browser: your files are never uploaded to a server, and you need no downloads or sign-up to get started.