CAF to HE-AAC - Online Audio Converter
Convert CAF to HE-AAC online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
About CAF to HE-AAC
Convert CAF to HE-AAC. CAF is Apple's 64-bit container for large recordings beyond WAV limits. HE-AAC adds spectral band replication for efficient low-bitrate streaming. Needs an HE-AAC decoder; plain AAC players may play only half the bandwidth..
Why convert CAF to HE-AAC?
- Smaller files with HE-AAC lossy compression.
- Keep quality where supported.
- Private, no upload - runs in your browser.
CAF vs HE-AAC
| Codec | PCM 16-bit | AAC (HE) |
|---|---|---|
| Compression | uncompressed | lossy |
| Sample behavior | Full quality kept | Quality set by bitrate |
| Typical use | CAF is Apple's 64-bit container for large recordings beyond WAV limits. | HE-AAC adds spectral band replication for efficient low-bitrate streaming. |
When not to convert CAF to HE-AAC
- Skip HE-AAC for archival masters: lossy compression discards detail, so keep the CAF original.
- Keep a master copy: repeated exports stack small losses, so archive CAF before batch HE-AAC shares.
Limits
Starting point: CAF - CAF is Apple's 64-bit container for large recordings beyond WAV limits. Few Windows tools open it; convert WAV for sharing. Needs an HE-AAC decoder; plain AAC players may play only half the bandwidth. Encode HE-AAC (AAC (HE)) from CAF at 256k for music or 128k for speech, starting from the master.
How conversion works
Conversion runs entirely in your browser with FFmpeg WASM. Files never leave your device.