MTS to M4A
Convert MTS files to M4A in seconds, for free. Nothing to install.
Files are deleted from the server automatically after 1 h.
Why convert MTS to M4A?
- MTS videos from camcorders and TV recordings are large and often will not open on phones or social networks.
- Keep only the sound: save music, a lecture or a podcast from a video.
- M4A is the native audio format of iPhone and Apple Music — good quality at a small size.
You don't need to install any software to convert MTS to M4A. Upload your file, choose M4A and download the result a few seconds later. The conversion runs on our servers and your file is deleted automatically after 1 h.
MTS vs M4A: comparison
| Feature | MTSAVCHD Video (MPEG-2 Transport Stream) | M4AMPEG-4 Audio (AAC) |
|---|---|---|
| Developer | Sony & Panasonic (AVCHD) | Apple / MPEG |
| Released | 2006 | 2003 |
| Type | video | audio |
| Compression | lossy | lossy |
| Opens with | VLC, Final Cut Pro, Premiere Pro, Windows Media Player | iTunes / Apple Music, VLC, Windows Media Player |
Tip: choose the bitrate. 128 kbps is enough for speech; 320 kbps is the best quality for music.
How it works
- Choose or drop your MTS file.
- Pick M4A as the output format.
- Click “Convert” and download your file.
MTS to M4A: questions and answers
Will quality be lost when converting MTS to M4A?
M4A uses compression, but at the default settings the difference is hard to hear or see. You can choose a higher bitrate in Options.
How long does MTS to M4A conversion take?
It depends on the length: a short file takes a few seconds, a long video can take a few minutes. Progress is shown as a percentage.
What is the maximum MTS file size?
Up to 500 MB per file and up to 20 files at once — for free.
Can I convert MTS to M4A on my phone?
Yes. TezConvert works in any browser on Android and iPhone — no app needed.
How do I open a M4A file?
M4A files open in: iTunes / Apple Music, VLC, Windows Media Player.
Are my files safe?
Files are used only for the conversion, never shown to anyone, and deleted automatically after 1 h. The original is deleted right after conversion.