Add your M2TS file
Drop one or more .m2ts files onto the converter above, or browse for them. They load into browser memory only — nothing is uploaded, so there is no size-based pricing and no server queue.
M2TS to ALAC
Pulling the soundtrack out of a .m2ts video into .alac audio keeps what you can hear and drops the picture entirely. Free, private, and validated — the file never leaves your browser.
Private for supported formats — processed in your browser
Runs on your deviceConvert supported files
Drop M2TS files here
Batch files can each use a different output. Nothing uploads for local conversions.
Working inputs include camera RAW, browser-local audio/video, PDF, CBZ/CBR comics, office documents, ebooks, markup, 3D models, structured text, images, and archives.About converting Blu-ray transport stream to Apple Lossless audio
Pulling the soundtrack out of a .m2ts video into .alac audio keeps what you can hear and drops the picture entirely. An .m2ts file is a BDAV transport stream, the container Blu-ray discs and AVCHD software use for high-definition video. Open a Blu-ray's BDMV/STREAM folder and every title is an .m2ts file pairing H.264, VC-1, or HEVC video with multichannel audio.
ALAC, the Apple Lossless Audio Codec, compresses music with zero quality sacrifice, and the .alac extension is occasionally used to label such files explicitly even though the codec normally travels inside an .m4a container. Decoding reproduces the original samples exactly, making it Apple's counterpart to FLAC. For this route the practical draw is native on every Apple platform from iOS to HomePod and mathematically lossless reconstruction — balanced against compresses slightly worse than FLAC on average, which is worth knowing before you commit a large batch.
Why convert M2TS to ALAC?
The usual reason to take .alac audio out of a .m2ts file is that only the sound matters — a talk, interview, song, or podcast segment. Keeping the video stream would waste storage, and a dedicated audio file is easier to trim, tag, and play. On the source side, file sizes are very large, often tens of gigabytes per title; on the target side, the payoff is native on every Apple platform from iOS to HomePod, which is exactly what you want for building a lossless library that syncs cleanly to iPhones and the Music app.
M2TS vs ALAC at a glance
| Aspect | Blu-ray transport stream (.m2ts) | Apple Lossless audio (.alac) |
|---|---|---|
| Format type | Container — quality depends on the codecs and settings inside | Lossless — every pixel or sample is preserved exactly |
| How it stores data | 192-byte packets whose arrival timestamps enable the precise buffer control disc players require | linear-prediction compression conceptually similar to FLAC, typically reaching 40 to 60 percent of PCM size |
| Strongest at | archiving personal Blu-ray projects and camcorder discs | building a lossless library that syncs cleanly to iPhones and the Music app |
| Weak spot | file sizes are very large, often tens of gigabytes per title | compresses slightly worse than FLAC on average |
| Metadata | chapter and playlist information lives in separate CLPI and MPLS files on the disc, not inside the .m2ts stream | inherits the full iTunes metadata atom set from its MPEG-4 container, including artwork, composer, and grouping fields |
Pick ALAC as the output
Select .alac in the output menu next to each file. The menu only offers targets this engine can genuinely produce, so if ALAC is selectable, the route is real and validated.
Convert on your device
Press Convert. A WebAssembly FFmpeg build demuxes the audio track and re-encodes it locally; the video stream is simply discarded.
Verify and download
Each result is signature-checked before the download unlocks, so a failed encode can never masquerade as a valid ALAC file. Outputs keep the original filename with the .alac extension.
M2TS to ALAC questions, answered
Will converting M2TS to ALAC lose quality?
Since m2ts is container-oriented and alac is lossless-oriented, the conversion preserves the source content exactly as stored; no additional compression pass is applied beyond what .alac itself requires.
Is it private to convert M2TS files here?
Yes — the .m2ts file is processed inside your browser tab and never uploaded. A WebAssembly FFmpeg build demuxes the audio track and re-encodes it locally; the video stream is simply discarded. Close the tab and the file is gone from memory.
Where will the ALAC file work?
Every Apple device and application plays ALAC natively, and cross-platform players such as VLC and foobar2000 handle it on Windows, Linux, and Android. Outside the Apple world support varies by player, which is why cross-platform archives still tend to favor FLAC.
Will the ALAC file be bigger or smaller than my M2TS?
Much smaller — the video stream is usually 80–95% of a .m2ts file's weight, and it is discarded entirely. The remaining audio is re-encoded at the bitrate implied by your quality setting.
What happens to the metadata in my M2TS file?
This converter strips container metadata deliberately (the FFmpeg command runs with metadata mapping disabled) so exported files do not leak recording details. In the source, chapter and playlist information lives in separate CLPI and MPLS files on the disc, not inside the .m2ts stream; none of it is transmitted anywhere because the file never leaves your browser.