How to use the M2TS to MP4 converter
- Choose your M2TS video or drop it on the box.
- Check the settings. "Same as original" resolution is fastest and lets fast mode copy compatible videos without re-encoding. Lower it to 720p for a smaller file.
- Click "Convert to MP4". A progress meter shows how far along it is.
- Download your MP4.
Why convert M2TS to MP4?
M2TS files from Blu-ray folders and camcorders are large and unsupported on phones. MP4 makes them portable.
- M2TS: large files.
- MP4: plays almost everywhere.
- MP4: good quality at small sizes with H.264.
M2TS from camcorders usually holds H.264, which can be copied as-is. Blu-ray discs with copy protection cannot be converted.
M2TS vs MP4
| M2TS | MP4 | |
|---|---|---|
| Full name | BDAV MPEG-2 Transport Stream | MPEG-4 Part 14 |
| Type | Video | Video |
| Created by | the Blu-ray Disc Association (2006) | Moving Picture Experts Group (MPEG) (2001) |
| Compression | Lossy | Lossy |
| Typical codecs | H.264 or MPEG-2 + AC3 or PCM | H.264 + AAC |
| Best for | Blu-ray video files and camcorder imports | Sharing videos online, phone recordings, social media uploads and streaming |
| Plays on | VLC and some media players; phones and websites usually do not | Windows, macOS, iPhone, Android, smart TVs, game consoles and every modern browser |
Does converting M2TS to MP4 lose quality?
Often none. When the M2TS contains H.264 video, MP4 can hold it as it is, so fast mode copies the streams without re-encoding. Other codecs (including HEVC while "Play everywhere" is ticked) are re-encoded at "Balanced" quality, which looks the same as the original to most people.
How long does it take?
Seconds when fast mode applies, even for a full film. If the video must be re-encoded, expect a few minutes for a long HD video.
What is an M2TS file?
M2TS is the transport-stream format used on Blu-ray discs and by AVCHD camcorders when copied to a computer. It is the same structure as MTS with a longer extension.
What is an MP4 file?
MP4 is a container that usually holds H.264 or H.265 video with AAC sound. It is built on Apple's QuickTime file structure and became an ISO standard in 2001. Because almost every phone, browser, TV and editing app can play it, MP4 is the safest choice when you need a video to just work.
Frequently asked questions
Is the M2TS to MP4 converter free?
Yes, completely free, with no sign-up and no watermark. Files up to 1 GB each can be converted, and there is no daily limit.
Is my file uploaded to a server?
No. The converter runs inside your browser using WebAssembly, so your file is processed on your own device and never sent to us or anyone else.
Will the MP4 sound and look as good as the M2TS?
Often none. When the M2TS contains H.264 video, MP4 can hold it as it is, so fast mode copies the streams without re-encoding.
Can I convert MP4 back to M2TS?
Yes, use the M2TS Converter and choose M2TS as the output.
An M2TS will not play on a phone. What should I do?
Convert it to MP4.
Does it work on iPhone and Android?
Yes, in Safari, Chrome and other modern mobile browsers. Short files work best on phones; for long or high-resolution videos a computer is faster.