M2TS to 7Z Converter
Processing entirely on your device — large files may take a moment.
Blu-ray MPEG-TS Video and 7-Zip Archive exist for different jobs: M2TS is the Blu-ray and AVCHD camcorder transport stream — high-quality footage that most phones, social apps and editors refuse to open directly. 7Z is ideal for big archives you store or share with power users; convert to ZIP when the recipient just needs to double-click.
This converter runs entirely in your browser using WebAssembly — your files never leave your device, nothing is uploaded, and there are no watermarks, sign-ups or queues. Drop in several files at once to convert them as a batch.
How M2TS compares to 7Z
| M2TS | 7Z | |
|---|---|---|
| Compression | MPEG-2 / H.264 inside | LZMA / LZMA2 |
| Best for | Camera footage and disc structures | Maximum compression, secure archives |
How to convert M2TS to 7Z
- 1
Select your files
Select your M2TS file — it never leaves your device.
- 2
Convert instantly
The engine packs the file, byte for byte, into a 7Z container — no re-encoding, no quality change.
- 3
Download results
Download the finished 7Z archive.
About the M2TS format
M2TS is the transport stream of Blu-ray discs and AVCHD camcorders: MPEG-2 or H.264 video in fixed 188-byte packets, built for broadcast-style resilience rather than compactness. Copy a camcorder's clips off its card and you are holding M2TS files; so is most of a decrypted Blu-ray folder structure.
The format plays in VLC and a handful of editors, but phones, social platforms and web apps reject it. Converting to MP4 is the standard hand-off: the video re-encodes to H.264 at your chosen quality and the result plays literally everywhere.
+Strengths
- ✓Broadcast-grade error resilience
- ✓Native to Blu-ray and AVCHD cameras
- ✓Carries high-bitrate, high-quality footage
!Limitations
- −Rejected by phones, web players and social platforms
- −Packet overhead inflates file size
About the 7Z format
7Z is the native format of Igor Pavlov's 7-Zip (1999), built around LZMA/LZMA2 compression — for years the ratio king against ZIP and RAR — with AES-256 encryption, solid archiving (similar files compress as one stream) and open, unpatented specifications. A 7Z of the same photos or code is routinely 20–40% smaller than its ZIP.
The trade-off is platform defaults: Windows Explorer and macOS Archive Utility do not open 7Z without third-party tools (7-Zip, PeaZip, Keka). It is the format for maximizing compression on your own terms, and for encrypted archives done properly (header encryption included).
+Strengths
- ✓Top-tier compression ratio (LZMA2)
- ✓Real AES-256 encryption, optional header encryption
- ✓Open format, free tooling everywhere
!Limitations
- −No native OS support — recipients need tools
- −Solid mode makes single-file extraction costly
Why convert M2TS to 7Z?
Think of it as moving your file to the container that fits the job. Rejected by phones, web players and social platforms 7Z works differently: Top-tier compression ratio (LZMA2) If any of that sounds like your task, run the conversion — it takes seconds and nothing leaves your device.
Frequently asked questions
Is this M2TS to 7Z converter really free?
Yes — completely free, with no sign-up, no watermark and no daily conversion limits. The site is supported by advertising.
Are my files uploaded to a server?
No. The conversion runs entirely inside your browser using WebAssembly, so your files never leave your device — that is what makes it instant and private.
Does it work on Windows, Mac, iPhone and Android?
Yes. Anything with a modern browser works: Windows, macOS, Linux, Android and iOS. No software installation is required.
Is there a file size limit for M2TS to 7Z?
The only limit is your device's memory, since nothing is uploaded. Files up to a few hundred megabytes work fine on a modern desktop browser; very large files simply take a little longer.
Why is video conversion slower than image conversion?
Every frame has to be decoded and re-encoded. This site runs that work on your own CPU via WebAssembly — nothing is uploaded, but a multi-minute video reasonably takes a few minutes. Images, by comparison, are single-frame jobs.
Does converting M2TS to 7Z re-encode my video?
Yes. The video is decoded and re-encoded with the settings chosen by the quality slider, which is what allows the format and size to change. For an archival copy, keep higher quality; for sharing, lower quality gives a much smaller file.