Add your M4V file
Drop one or more .m4v 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.
M4V to M2TS
Pulling the soundtrack out of a .m4v video into .m2ts 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 M4V 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 MPEG-4 video to Blu-ray transport stream
Pulling the soundtrack out of a .m4v video into .m2ts audio keeps what you can hear and drops the picture entirely. An .m4v file is Apple's flavor of the MPEG-4 container, used by iTunes for movies, TV episodes, and music videos. Structurally it is almost identical to .mp4, but the .m4v extension signaled iTunes-specific features such as chapter markers and, on purchased content, FairPlay copy protection.
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. For this route the practical draw is preserves full disc quality, including lossless audio tracks and seekable and damage-tolerant like every transport stream — balanced against file sizes are very large, often tens of gigabytes per title, which is worth knowing before you commit a large batch.
Why convert M4V to M2TS?
The usual reason to take .m2ts audio out of a .m4v 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, fairPlay-protected files play only in Apple apps on authorized devices, and no converter can open them; on the target side, the payoff is preserves full disc quality, including lossless audio tracks, which is exactly what you want for archiving personal Blu-ray projects and camcorder discs.
M4V vs M2TS at a glance
| Aspect | MPEG-4 video (.m4v) | Blu-ray transport stream (.m2ts) |
|---|---|---|
| Format type | Container — quality depends on the codecs and settings inside | Container — quality depends on the codecs and settings inside |
| How it stores data | identical ISO base media layout to MP4, distinguished only by branding atoms and the extension | 192-byte packets whose arrival timestamps enable the precise buffer control disc players require |
| Strongest at | playing back iTunes-era video libraries | archiving personal Blu-ray projects and camcorder discs |
| Weak spot | fairPlay-protected files play only in Apple apps on authorized devices, and no converter can open them | file sizes are very large, often tens of gigabytes per title |
| Metadata | full iTunes atom metadata: title, show, season, episode, artwork, chapters, and content ratings | chapter and playlist information lives in separate CLPI and MPLS files on the disc, not inside the .m2ts stream |
Pick M2TS as the output
Select .m2ts in the output menu next to each file. The menu only offers targets this engine can genuinely produce, so if M2TS 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 M2TS file. Outputs keep the original filename with the .m2ts extension.
M4V to M2TS questions, answered
Will converting M4V to M2TS lose quality?
Since m4v is container-oriented and m2ts is container-oriented, the conversion preserves the source content exactly as stored; no additional compression pass is applied beyond what .m2ts itself requires.
Is it private to convert M4V files here?
Yes — the .m4v 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 M2TS file work?
Desktop players such as VLC and MPC-HC play .m2ts smoothly and editing software imports it, but no browser or mobile OS supports the container. Converting to MKV keeps every track, while converting to MP4 favors device compatibility.
Will the M2TS file be bigger or smaller than my M4V?
Much smaller — the video stream is usually 80–95% of a .m4v 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 M4V 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, full iTunes atom metadata: title, show, season, episode, artwork, chapters, and content ratings; none of it is transmitted anywhere because the file never leaves your browser.
Can I convert M2TS back to M4V?
Yes — the reverse route exists as a separate tool. Bear in mind that round-tripping .m4v → .m2ts → .m4v is not a perfect undo when any lossy step is involved; keep your original if fidelity matters.