Convert MPEG-2 Transport Stream (.m2ts) to Apple Lossless Audio Codec (.alac) online for free. Fast, secure video conversion with no watermarks or registration.
Conversion settings — add a file to adjust
Upload your .m2ts 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.
M2TS containers from Blu-ray and AVCHD hold high-quality audio tracks — Dolby AC3 surround, DTS at up to 1.5 Mbps, or uncompressed 24-bit LPCM. ALAC (Apple Lossless Audio Codec) compresses audio to 40-60% of its uncompressed PCM size while preserving every sample bit-for-bit. Converting M2TS to ALAC extracts the audio from high-definition video sources into a lossless, space-efficient format that integrates seamlessly with the Apple ecosystem.
ALAC is Apple's lossless codec with native support across iPhones, iPads, Macs, Apple TV, HomePod, and Apple Music. When you want to archive audio from Blu-ray movies or camcorder recordings without any quality loss, ALAC provides the smallest file size while guaranteeing perfect audio preservation. It is the ideal format for building an Apple-native lossless audio library from high-definition video sources.
FFmpeg extracts and decodes the audio stream (AC3/DTS/LPCM) from the M2TS, then compresses it using the ALAC encoder into an M4A container. Multi-channel content can be encoded as multi-channel ALAC (up to 7.1) or downmixed to stereo. ALAC achieves approximately 40-60% compression versus raw PCM through linear prediction and entropy coding. The M4A container supports iTunes-compatible metadata for seamless library integration.
ALAC is mathematically lossless — the decoded output is bit-identical to the input PCM. From LPCM Blu-ray tracks, this means perfect preservation. From AC3/DTS sources, the ALAC perfectly captures the decoded audio at its maximum quality. No further quality degradation occurs regardless of how many times the ALAC is decoded and re-encoded.
| Device | M2TS | 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
8MB free, 50MB Nitro
M2TS to ALAC conversion is the optimal path for Apple ecosystem users who want lossless audio from Blu-ray and camcorder sources. You get perfect quality preservation in a compact format that plays natively on every Apple device.
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| No |
| الميزة | M2TS | ALAC |
|---|---|---|
| الاسم الكامل | Blu-ray BDAV MPEG-2 Transport Stream | Apple Lossless Audio Codec |
| الامتداد | .m2ts | .m4a |
| الأفضل لـ | Blu-ray format | Lossless |