How to convert M4V to MTS
To convert M4V to MTS, upload your M4V file, choose MTS as the output format and press Convert. The finished MTS file is ready to save to your phone or computer in seconds, free, with no watermark and no sign-up. Your file is deleted from our server about 30 minutes after the conversion.
This free online converter turns M4V videos into MTS files in your browser, with no software to install and no watermark. When the video and audio inside your M4V file can be placed in MTS as they are, the streams are copied without re-encoding, which is faster and keeps the original quality. Otherwise the video is re-encoded as H.264 video with AC-3 audio in AVCHD-style 192-byte packets.
Why convert M4V to MTS?
- Stores high-definition H.264 footage
- Native output of many camcorders
- Keeps full camera quality
- Plays on: Camcorder software, VLC and professional editors; limited on phones and the web
What to expect from this conversion
- Expect a larger file than the M4V original, because MTS is a less efficient format for the same quality.
- MTS output uses 192-byte AVCHD-style packets with H.264 video and AC-3 audio.
- Videos bought from iTunes may be copy-protected. DRM-protected files cannot be converted by any tool, but your own M4V recordings work fine.
- The first audio track is kept. Subtitle tracks, extra audio tracks and chapters are not included in the converted file.
M4V vs MTS
| Property | M4V | MTS |
|---|---|---|
| Full name | iTunes Video | AVCHD Video |
| Released | 2001, Apple | 2006, Sony and Panasonic |
| Generation | Modern | Pro |
| Typical file size | Small | Medium |
| Plays on | iTunes, Apple TV, iOS, macOS and VLC | Camcorder software, VLC and professional editors; limited on phones and the web |
| Best for | syncing videos to iPhone or iPad; playing on Apple TV | importing camcorder footage into editors; archiving AVCHD clips |
Steps to convert M4V to MTS
- Drop your M4V video file onto the converter, or click to choose it.
- Check that MTS is selected as the target and adjust the options if you want.
- Press Convert, then download your new MTS file when it finishes.
Tips for the best result
- Leave Fast mode on to keep the original quality whenever the streams can be copied.
- Pick a lower resolution if the file is for a phone or messaging app.
- Use Mute if you only need the picture.
Frequently asked questions
How do I convert M4V to MTS?
Upload your M4V file, make sure MTS is the selected target and press Convert. When the progress bar finishes, download the MTS file. No account or software is needed.
Is the M4V to MTS converter free?
Yes. It is free, with no watermark, no sign-up and no daily limit on how many files you convert. The site is supported by ads.
Will I lose quality when converting M4V to MTS?
Not necessarily. If the video and audio streams already fit inside MTS, they are copied without re-encoding, so quality stays identical. If the file has to be re-encoded, the High setting keeps almost all visible detail, while Small trades some detail for a smaller file.
Why is my MTS file larger than the M4V original?
Expect a larger file than the M4V original, because MTS is a less efficient format for the same quality. Choosing a lower quality or resolution reduces the size further.
Which devices can play MTS files?
MTS files play on Camcorder software, VLC and professional editors; limited on phones and the web.
How large a file can I upload?
You can upload videos up to 500 MB. Files are deleted from the server about 30 minutes after conversion.