How to convert Y4M to MTS
To convert Y4M to MTS, upload your Y4M 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 Y4M videos into MTS files in your browser, with no software to install and no watermark. When the video and audio inside your Y4M 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.
Reasons to switch from Y4M 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 smaller file than the Y4M original, because MTS compresses more efficiently.
- MTS output uses 192-byte AVCHD-style packets with H.264 video and AC-3 audio.
- Y4M files are huge because they are uncompressed, so uploads can take a while on slower connections.
- The first audio track is kept. Subtitle tracks, extra audio tracks and chapters are not included in the converted file.
Y4M vs MTS
| Property | Y4M | MTS |
|---|---|---|
| Full name | YUV4MPEG2 | AVCHD Video |
| Released | 2000, MJPEG Tools / Xiph.Org | 2006, Sony and Panasonic |
| Generation | Niche | Pro |
| Typical file size | Huge | Medium |
| Plays on | ffmpeg, x264, x265, aomenc, VLC and other video tools | Camcorder software, VLC and professional editors; limited on phones and the web |
| Best for | benchmarking codecs; feeding raw video to encoders | importing camcorder footage into editors; archiving AVCHD clips |
Steps to convert Y4M to MTS
- Drop your Y4M 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 Y4M to MTS?
Upload your Y4M 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 Y4M 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 Y4M 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 smaller than the Y4M original?
Expect a smaller file than the Y4M original, because MTS compresses more efficiently. 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.