Convert MTS to MP4
Turn your MTS file into an MP4 that plays where you need it, with nothing to install.
- Free to start
- Nothing to install
- Up to 1GB
How to convert MTS to MP4
Upload your MTS file
Drag and drop a MTS file to turn into MP4, or click to browse. Anything under 1GB, and nothing is installed.
Confirm MP4 as the output
MP4 is already selected, so there is nothing to configure. Switch to another format in the panel if MTS needs to go somewhere else.
Convert and download
We convert the MTS on our servers, usually in under a minute. Create a free account to download the MP4.
Why convert MTS to MP4?
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.
Container
Typical codecs
Best for
Plays on
File size
| Feature | 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 |
MTS to MP4 questions
Is the MTS to MP4 converter free?
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.
Do I need to install any software?
No. The conversion runs on our servers and you use it from a browser tab, so it works the same on Windows, macOS, Linux, iPhone and Android. Nothing to install at either end. Where MTS plays: Camcorder software and VLC; rarely anything else. Where the MP4 you get back plays: Every phone, browser, TV and editor.
Does converting MTS to MP4 reduce the quality?
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. What changes is the container and the codec. MP4 holds: H.264 video, AAC audio. Converting the same file back and forth repeatedly will eventually show, so keep your original.
How large a file can I convert?
Anything under 1GB per upload, which is more footage in some formats than others. MTS: Large, and split into chunks. MP4 coming back: Small for the quality. For anything bigger, trim or compress it first, both are free tools here.
Is my file kept private?
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.
Why is my camcorder footage split into several MTS files?
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.
Other formats
Everything else you can do here.
Every conversion for a format
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Convert MTS to MP4 now
Free, nothing to install, and the file stays open in a full video editor afterwards.