Convert XviD MPEG-4 Video (.xvid) to Apple Lossless Audio Codec (.alac) online for free. Fast, secure video conversion with no watermarks or registration.
Upload your .xvid 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.
XviD, the open-source MPEG-4 Part 2 codec born from reverse-engineering DivX, became the backbone of internet video distribution during the CD-R era. Scene groups encoded DVD-quality video into 700 MB AVI files using XviD, pairing the video with MP3 audio at 128-192 kbps. These files circulated across peer-to-peer networks and became the de facto standard for sharing movies online before H.264 and modern streaming took over.
ALAC (Apple Lossless Audio Codec) provides bit-perfect audio compression at roughly half the size of uncompressed PCM, with native playback on every Apple device. Converting XviD to ALAC extracts the audio track, decodes it from MP3 or AC3, and encodes it losslessly for integration with iTunes, Apple Music, iPhone, iPad, and HomePod.
ALAC is the optimal format for preserving XviD audio within Apple's ecosystem. It plays natively on every Apple device without third-party apps, syncs efficiently through iTunes and iCloud, and maintains bit-perfect quality from the decoded source audio. Unlike AAC (which introduces another generation of lossy compression) or AIFF (which is uncompressed and enormous), ALAC provides the ideal balance of quality and practicality.
For anyone migrating a large XviD collection to Apple devices, ALAC extraction creates master audio files from which you can later transcode to any lossy format without the quality penalty of double compression. The lossless preservation means your extracted audio library never degrades, regardless of how many times you re-encode it for different devices.
FFmpeg demuxes the XviD AVI container to extract the audio stream — typically MP3 at 128-192 kbps in scene releases, or AC3 in DVD rips. The audio is decoded to raw PCM samples, then encoded using Apple's ALAC codec with its adaptive linear prediction and entropy coding algorithms. Output is wrapped in an M4A container with iTunes-compatible metadata atoms. ALAC achieves approximately 50% compression compared to the raw PCM, with zero quality loss.
ALAC is mathematically lossless — the decoded output is bit-identical to the PCM input. Since XviD audio is already lossy (MP3 or AC3), ALAC simply preserves that decoded quality perfectly with absolutely no additional degradation. This makes ALAC the safest archival format: you can later transcode from the ALAC master to any lossy format without double-compression artifacts.
| Device | XviD | ALAC |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Partial | Native |
| iPhone/iPad | Partial | Native |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No |
Resolution: 1920x1080
Bitrate: 8-12 Mbps
H.264 recommended for fast processing
Resolution: 1080x1080
Bitrate: 3.5 Mbps
Square or 9:16 for Reels
Resolution: 1080x1920
Bitrate: 4 Mbps
9:16 vertical, under 60s ideal
Resolution: 1280x720
Bitrate: 5 Mbps
Under 140s, 512MB max
Resolution: 960x540
Bitrate: 2 Mbps
16MB limit for standard, 64MB for document
Resolution: 1280x720
Bitrate: 4 Mbps
XviD to ALAC conversion captures the highest possible audio quality from open-source era scene releases in Apple's native lossless format, ideal for listeners who want their extracted audio preserved perfectly across the Apple ecosystem.
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| Caracteristică | XviD | ALAC |
|---|---|---|
| Nume complet | XviD MPEG-4 Video | Apple Lossless Audio Codec |
| Extensie | .xvid | .m4a |
| Cel mai potrivit pentru | Open source | Lossless |