Free online CAFF to OGG converter

Source format: CAFF

CAFF stands for Core Audio Format File, an Apple audio container format used mainly on macOS and iOS systems. It can store uncompressed or compressed audio, along with metadata such as markers and channel information. CAFF is most often encountered in professional audio workflows, Apple software, and applications that use Core Audio for recording or playback. Typical uses include voice recordings, sound effects, and archived audio where Apple compatibility is important.

Target format: OGG

OGG is a free, open container format most commonly used with Vorbis or Opus audio. It is widely supported by media players, web tools, game engines, and open-source software. OGG is valued for its good compression, patent-free ecosystem, and broad compatibility across desktop and mobile platforms. It is commonly used for music, speech, podcasts, and in-app audio assets.

How to perform the conversion

The most reliable way to convert CAFF to OGG is with a desktop audio tool such as FFmpeg. If you prefer a no-install option, you can convert the file on 101convert.com for free in your browser.

Using FFmpeg

1. Install FFmpeg if it is not already available on your system.
2. Open a terminal or command prompt in the folder containing the CAFF file.
3. Run a command such as ffmpeg -i input.caff output.ogg.
4. If you want to control quality, specify the OGG codec explicitly, for example ffmpeg -i input.caff -c:a libvorbis -q:a 5 output.ogg for Vorbis, or ffmpeg -i input.caff -c:a libopus -b:a 96k output.ogg for Opus.
5. Play the resulting OGG file in your target application to confirm it works as expected.

Using a graphical editor

1. Open the CAFF file in an audio editor that supports Core Audio input, such as Audacity with the proper import support or another compatible editor.
2. Check the sample rate, channels, and duration before exporting.
3. Choose File → Export or File → Export Audio.
4. Select OGG Vorbis or Opus as the output format.
5. Save the file and verify playback.

Notes on quality, compatibility, or limitations

CAFF may contain audio that is already compressed or may be uncompressed; converting it to OGG usually involves re-encoding, which can reduce quality if the source is not lossless. For best results, start from the highest-quality CAFF source available. If the CAFF file contains multichannel audio, some OGG encoders or players may handle channels differently, so test the output in your intended playback environment. Also note that OGG is a container, so the exact codec matters: Vorbis is common for general audio, while Opus is often better for speech and lower bitrates. If you need maximum compatibility with older software, Vorbis is usually the safer choice.