OpenAnyFile
Works
Viewing, inspecting and verifying. You get a full player with scrubbing, volume and fullscreen — provided your browser has a codec for the stream inside. File details, exact byte size and the detected signature are always shown.
How to open a .mts file
The short version: MTS is an AVCHD Video from Sony and Panasonic. The longer version — including the quirk that trips most people up — is below, along with a viewer that runs entirely on your own device.
What is a .mts file?
AVCHD Video is a video format developed by Sony and Panasonic, first appearing in 2006. It is normally produced by Camcorders and DSLR video modes.
An MPEG-2 transport stream carrying H.264. Camcorders split a single recording at the 2 GB mark, which is why one continuous take arrives as several .mts files that need joining in order.
| Full name | AVCHD Video |
|---|---|
| File category | Video |
| MIME type | video/mp2t |
| Magic bytes (file signature) | 47 (sync byte, repeating every 188 bytes) |
| Developer | Sony and Panasonic |
| Introduced | 2006 |
| Usually created by | Camcorders and DSLR video modes |
| OpenAnyFile engine | HTML5 video player |
| Opens without upload | Yes — parsed locally in your browser |
Open a .mts file in your browser
OpenAnyFile routes .mts to its HTML5 video player, which plays a full player with scrubbing, volume and fullscreen — provided your browser has a codec for the stream inside.
- Open the OpenAnyFile opener in this browser — nothing to download or sign up for.
- Drag your .mts file onto the drop zone, click to browse for it, or paste it with Ctrl+V.
- The extension is detected and the file is handed to the HTML5 video player.
- Your MTS opens on its own viewer page: a full player with scrubbing, volume and fullscreen — provided your browser has a codec for the stream inside.
- Use fullscreen for a closer look, or download the file back out unchanged. No account, no upload, no watermark, no file-size gate.
What you can and cannot do with it here
Does not work
Editing and re-saving. OpenAnyFile is a reader, not an editor — for changes you still need special software or an equivalent.
Local-only by design, not by promise
Plenty of sites promise they delete your uploads. OpenAnyFile avoids the promise by avoiding the upload. When you drop a .mts file in, the browser grants the page temporary read access to those bytes and nothing more — the page has no path to send them anywhere. You can verify it in seconds: open DevTools, switch to the network tab, and open a file. The request list stays empty.
Frequently asked questions about MTS files
Can I open a .mts file without installing special software?
Yes. OpenAnyFile's HTML5 video player runs in your browser, so you can read a MTS file with nothing installed. You get a full player with scrubbing, volume and fullscreen — provided your browser has a codec for the stream inside. For full editing you still need the original application — this is a viewer, not an editor.
How can I check a file really is a MTS file?
Look at the first bytes rather than the extension. A genuine MTS begins with 47 (sync byte, repeating every 188 bytes). Opening the file in OpenAnyFile shows that signature in the file-details panel, so a file renamed to .mts by mistake is easy to spot.
Is it safe to open a MTS file online?
With OpenAnyFile, yes, because nothing is uploaded. The file is read locally through your browser's File API and never leaves your device, so there is no server copy to leak, log or retain. That matters most for the kind of file people are least willing to hand to a random converter site.
What is a .mts file, exactly?
AVCHD Video — a video/mp2t format created by Sony and Panasonic since 2006. An MPEG-2 transport stream carrying H.264. Camcorders split a single recording at the 2 GB mark, which is why one continuous take arrives as several .mts files that need joining in order.
Does the same viewer handle formats related to MTS?
Yes — the same engine also opens .mp4, .avi, .mkv, so you can compare related files without switching tools.
Related formats
These open with the same engine, so if you have one of these sitting next to your .mts file, it will open too: