Convert AVI to ALAC — Free Online Converter
Convert Audio Video Interleave (.avi) to Apple Lossless Audio Codec (.alac) online for free. Fast, secure video conversion with no watermarks or regis...
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Upload your .avi 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.
About AVI to ALAC Conversion
AVI files from camcorders, screen recorders, and legacy editing software often contain audio encoded as PCM, MP3, or AC3. ALAC (Apple Lossless Audio Codec) is Apple's lossless compression format, introduced in 2004 and open-sourced in 2011. ALAC achieves roughly 50% compression of PCM data with bit-perfect reconstruction — every sample is identical on playback. Converting AVI to ALAC extracts the audio track and compresses it losslessly in an M4A container recognized by iTunes, Apple Music, and all iOS devices.
Why Convert AVI to ALAC?
ALAC combines the quality guarantee of uncompressed PCM with file sizes roughly half as large, making it the optimal format for Apple ecosystem users who want lossless audio without the storage penalty. If you are building an iTunes library from AVI video recordings or need lossless audio for Apple-based music production, ALAC is the native choice — it plays seamlessly on every iPhone, iPad, Mac, Apple TV, and HomePod.
Common Use Cases
- Building a lossless music library in iTunes/Apple Music from AVI concert recordings
- Extracting high-fidelity audio from AVI interview footage for archival on Apple devices
- Preparing lossless audio assets from AVI source material for GarageBand or Logic Pro
- Creating space-efficient lossless backups of AVI audio tracks for cloud storage on iCloud
- Converting AVI audio for lossless streaming via AirPlay 2 to HomePod or Apple TV
How It Works
The conversion process demuxes the AVI file to extract the raw audio stream, decodes it to PCM (if compressed), then encodes to ALAC using FFmpeg's native ALAC encoder. The output is wrapped in an M4A (MPEG-4 Part 14) container. ALAC preserves the original sample rate (typically 44.1 kHz or 48 kHz), bit depth (16-bit or 24-bit), and channel layout. Compression ratio is typically 40–60% depending on audio content complexity — simple spoken word compresses more than dense orchestral music.
Quality & Performance
ALAC is mathematically lossless — the decoded audio is bit-for-bit identical to the input PCM. If the AVI source already contains lossy audio (MP3, AC3), the ALAC output will faithfully preserve the decoded quality without any additional degradation, though it cannot restore detail lost in the original encoding.
Device Compatibility
| Device | AVI | ALAC |
|---|---|---|
| Windows PC | Native | Partial |
| macOS | Partial | Native |
| iPhone/iPad | Partial | Native |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No | No |
Recommended Settings by Platform
YouTube
Resolution: 1920x1080
Bitrate: 8-12 Mbps
H.264 recommended for fast processing
Resolution: 1080x1080
Bitrate: 3.5 Mbps
Square or 9:16 for Reels
TikTok
Resolution: 1080x1920
Bitrate: 4 Mbps
9:16 vertical, under 60s ideal
Twitter/X
Resolution: 1280x720
Bitrate: 5 Mbps
Under 140s, 512MB max
Resolution: 960x540
Bitrate: 2 Mbps
16MB limit for standard, 64MB for document
Discord
Resolution: 1280x720
Bitrate: 4 Mbps
8MB free, 50MB Nitro
Tips for Best Results
- 1If your AVI contains 24-bit audio, ALAC will preserve the full bit depth — ideal for archiving high-resolution recordings.
- 2ALAC files can be converted to AAC later without quality loss beyond the single lossy encode — keep ALAC as your master copy.
- 3Tag your ALAC files with proper iTunes metadata (artist, album, artwork) after extraction to maintain a well-organized library.
- 4For maximum Apple ecosystem integration, ensure the output sample rate matches Apple's preferred rates: 44.1 kHz for music, 48 kHz for video-sourced audio.
Related Conversions
AVI to ALAC conversion delivers lossless audio quality in Apple's native ecosystem format. It is the ideal choice for users who want perfect audio fidelity with broad Apple device compatibility and reasonable file sizes.