Convert Apple Lossless Audio Codec (.alac) to Ogg Vorbis (.ogg) online for free. Fast, secure audio conversion with no watermarks or registration.
Conversion settings — add a file to adjust
Upload your .m4a file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .ogg file when it's ready.
ALAC is Apple's lossless codec storing bit-perfect audio in M4A containers. OGG Vorbis is Xiph.org's open-source lossy codec, delivering excellent quality-per-bitrate with zero patent encumbrances. Vorbis is natively supported by Firefox, Chrome, Android, and is used internally by Spotify.
Converting ALAC to OGG transcodes from lossless Apple audio to the open-source lossy standard. Starting from lossless ensures the Vorbis encoder receives perfect PCM — producing optimal quality for the target bitrate with only a single lossy encoding step.
OGG Vorbis is royalty-free and essential for game audio (Unity, Unreal, Godot), Linux media libraries, and web applications. ALAC cannot be played natively on Android, Linux, or in Firefox. Converting ALAC to OGG enables cross-platform distribution in the open-source ecosystem.
The lossless ALAC source provides the best possible starting point for Vorbis encoding. Unlike converting from MP3 or AAC (which compounds lossy artifacts), ALAC-to-OGG produces a single-generation encode from perfect PCM.
FFmpeg decodes ALAC to perfect PCM, then encodes using libvorbis into an OGG container. Vorbis uses VBR encoding by default with quality levels -1 to 10. The lossless PCM input ensures optimal Vorbis encoder performance. Metadata from M4A atom tags is mapped to Vorbis comments. Album art can be embedded via METADATA_BLOCK_PICTURE.
Starting from lossless ALAC means the Vorbis output is the best achievable for the quality level. At quality 5 (~160 kbps), most listeners cannot distinguish the output from the lossless original. At quality 7 (~224 kbps), it is effectively transparent. This is significantly better than transcoding from another lossy format.
| Device | ALAC | OGG |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Native | Partial |
| iPhone/iPad | Native | Partial |
| Android | Partial | Native |
| Linux | Partial | Native |
| Web Browser | No |
Resolution: N/A
Bitrate: 320 kbps
OGG Vorbis preferred
Resolution: N/A
Bitrate: 256 kbps
AAC format required
Resolution: N/A
Bitrate: 128 kbps
Lossless FLAC/WAV for best quality
Resolution: N/A
Bitrate: 128 kbps
MP3 mono for spoken word
ALAC to OGG Vorbis produces optimal lossy output from lossless Apple sources. The single-generation encode from perfect PCM delivers the best Vorbis quality for any target bitrate.
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| Native |
| Özellik | ALAC | OGG |
|---|---|---|
| Tam Ad | Apple Lossless Audio Codec | Ogg Vorbis |
| Uzantı | .m4a | .ogg |
| En İyi Kullanım | Lossless | Open source |