Convert MP4 to CAF
Extract the audio from MP4 videos and save it as CAF — ideal for iOS app sounds and Apple developer workflows.
- No upload — 100% private
- Fast, lossless when possible
- Free & unlimited
- Works on iPhone & Android
Keep this tab open — the conversion runs on your device, nothing is uploaded.
Add more files above to keep converting.
How to convert MP4 to CAF
- 1
Tap Choose files and select one or more MP4 files (or drag them in).
- 2
Check that CAF is selected. Use Advanced options for bitrate, channels or trimming.
- 3
Press Convert. Everything happens on your device — no upload, no waiting in a queue.
- 4
Your CAF downloads automatically. Converting several files? Grab them all as a ZIP.
MP4 vs CAF
Only the sound is kept — the picture is dropped, so the CAF file is far smaller than the MP4 video.
| MP4 | CAF | |
|---|---|---|
| Full name | MPEG-4 Part 14 | Core Audio Format |
| Type | Video | Audio |
| Compression | Lossy | Lossless |
| Developed by | MPEG | Apple |
| Introduced | 2001 | 2005 |
| Plays on iPhone | ✓ Yes | ✓ Yes |
| Plays on Android | ✓ Yes | ✕ No |
| Plays on Windows | ✓ Yes | ✕ No |
| Plays on Mac | ✓ Yes | ✓ Yes |
About MP4 and CAF
MP4: MP4 is the universal video format. With H.264 video and AAC audio it plays on every iPhone, Android phone, smart TV, browser, WhatsApp, Instagram and YouTube.
CAF: CAF is Apple's flexible audio container used inside iOS and macOS apps and by GarageBand. Files can be any length and hold many codecs.
Frequently asked questions
How do I convert MP4 to CAF on my phone?
Will converting MP4 to CAF reduce quality?
Can I convert only part of the MP4?
Is this MP4 to CAF converter free?
Are my files uploaded to a server?
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