Turn your MTS file into an MP4 that plays where you need it, right in your browser.
Drag and drop the file, or click to browse. Files up to 500 MB are supported, and nothing is installed.
MP4 is already selected, so there is nothing to configure. You can switch formats in the panel if you need to.
We convert on our servers, usually in under a minute. Create a free account to download the MP4, or keep editing the file in REQO.
MTS is what AVCHD camcorders write to their memory cards: H.264 video wrapped in a broadcast transport stream, with the recording split across several files once it passes the card’s size limit.
The practical problem: Phones, browsers and most editors will not open an MTS file. Long recordings arrive split across several files instead of one. The AC-3 audio track inside is not readable by a lot of consumer software.
MP4 solves that. Plays natively on every phone, browser, TV and editing app with no extra codecs. Every upload form accepts it, from YouTube and LinkedIn to Slack and email. H.264 keeps files small enough to send while still looking sharp at 1080p.
AVCHD camcorders write MTS files that almost nothing outside their own bundled software will open, and long recordings arrive split across several of them. Converting to MP4 gives you one ordinary file per clip that plays on a phone, uploads anywhere and imports into any editor.
| MTS | MP4 | |
|---|---|---|
| Container | AVCHD (MPEG-2 transport stream) | MPEG-4 Part 14 |
| Typical codecs | H.264 video, AC-3 or PCM audio | H.264 video, AAC audio |
| Best for | Footage straight off a Sony, Panasonic or Canon camcorder | Sharing anywhere, uploads, web embeds |
| Plays on | Camcorder software and VLC; rarely anything else | Every phone, browser, TV and editor |
| File size | Large, and split into chunks | Small for the quality |
Yes. Convert and preview the result for free, then create a free account to download it. There is no per-file charge and no watermark on the MP4 itself beyond the free-plan badge.
No. The conversion runs on our servers and the whole flow happens in your browser, so it works the same on Windows, macOS, Linux, iPhone and Android.
Converting re-encodes the video, so it is not bit-for-bit identical. We encode at a high quality target, which keeps the result visually indistinguishable from the MTS on normal viewing. Converting the same file back and forth repeatedly will eventually show, so keep your original.
Up to 500 MB per file. For anything bigger, trim or compress it first, both are free tools here.
Your upload is processed and then held only as long as your project needs it. Nothing is published, indexed or shared unless you create a share link yourself.
AVCHD splits a recording once it hits the card’s file-size limit, usually around 2 or 4 GB. Convert each one, then use the free merge tool to join them back into a single video.
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OpenFree, in your browser, and the file stays open in a full video editor afterwards.