Convert Ogg Vorbis (.ogg) to Apple Lossless Audio Codec (.alac) online for free. Fast, secure audio conversion with no watermarks or registration.
Conversion settings — add a file to adjust
Upload your .ogg 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 .m4a file when it's ready.
OGG Vorbis is Xiph.org's open-source lossy codec with excellent quality characteristics. ALAC (Apple Lossless Audio Codec), open-sourced by Apple in 2011, provides lossless compression within the M4A container and plays natively on every Apple device. ALAC achieves roughly 40-60% compression compared to raw PCM while preserving every audio sample bit-for-bit.
Converting OGG to ALAC decodes the Vorbis audio to PCM and re-encodes it losslessly using ALAC. The result is a file that preserves the full decoded quality of your OGG source in Apple's native lossless format, ready for the entire Apple ecosystem.
Apple devices cannot play OGG Vorbis natively. ALAC is Apple's native lossless format with hardware-accelerated decoding on iPhone, iPad, Mac, HomePod, and Apple Watch. Converting OGG to ALAC ensures your audio is playable across all Apple hardware while preserving every decoded sample.
ALAC also provides a lossless safety net for future transcoding. If you later need AAC, WAV, or any other format, the ALAC file preserves the full decoded quality of the OGG source without further generation loss. The M4A container supports rich metadata including album art, lyrics, and chapter markers.
FFmpeg decodes the Vorbis stream from the OGG container to PCM, then encodes the raw samples using the ALAC encoder (-c:a alac) into an M4A container. Since Vorbis is lossy, the PCM represents the quality ceiling of the OGG source. ALAC then compresses this PCM losslessly. The output preserves the source sample rate and channel layout. Vorbis comment metadata is mapped to MP4 atom tags for iTunes/Apple Music compatibility.
The ALAC encoding stage is lossless — every decoded Vorbis sample is preserved exactly. The overall quality is bounded by the Vorbis source: a quality 5 (~160 kbps) OGG file produces an ALAC with exactly that quality level, permanently preserved. The ALAC file is larger than the OGG (roughly 5 MB/min vs 1.2 MB/min) because lossless compression is less efficient than lossy.
| Device | OGG | ALAC |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Partial | Native |
| iPhone/iPad | Partial | Native |
| Android | Native | Partial |
| Linux | Partial | Partial |
| Web Browser | Native |
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
OGG to ALAC preserves the full decoded quality of your Vorbis audio in Apple's native lossless format. The conversion ensures Apple ecosystem compatibility with zero additional quality loss.
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Regisztracio nem szukseges
Azonnal kezdhet konvertalni
Mindenhol mukodik
Barmely bongeszo, barmely eszkoz
| No |
| Jellemzo | OGG | ALAC |
|---|---|---|
| Teljes nev | Ogg Vorbis | Apple Lossless Audio Codec |
| Kiterjesztes | .ogg | .m4a |
| Leginkabb ajanlott | Open source | Lossless |