Convert any video file to M4A format online for free. Fast, secure, and easy-to-use video to M4A converter with no software installation required.
or click below to browse
Max file size: 50 MBMax duration: 30 min
Sign up for increased limitsA free account gets you up to 50 MB and 30 min.
Drag and drop your M2TS file, or click to browse for it.
Choose M4A as the output and click Convert. The conversion runs on our servers, so your device does none of the work.
Download your converted file instantly. The download link expires in 1 hour for security.
Our powerful servers process your files quickly, delivering converted files in seconds.
Convert your files completely free with no hidden costs or subscription fees.
Your file is used only to make your conversion. It is never published or shared, and the download link expires after one hour.
Works directly in your web browser. No software download or installation required.
How the two formats differ on the things that change your result.
| Specification | M2TS (source) | M4A (result) |
|---|---|---|
| Container | BDAV MPEG-2 Transport Stream | MPEG-4 Part 14 |
| Developed by | Blu-ray Disc Association | Apple / MPEG |
| Introduced | 2006 | 2003 |
| Audio codecs | AC-3, DTS, LPCM | AAC-LC, HE-AAC, ALAC |
| Compression | Depends on codec | Depends on codec |
| Approx. file size | 113–300 MB per minute | 0.72–1.92 MB per minute |
| Metadata / tags | Container tags | MPEG-4 iTunes-style atoms |
| Licensing | Patent-licensed | Patent-licensed |
| Plays natively on | Needs a player: Windows, macOS, Android, Smart TVs | Native: Web browsers, Windows, macOS, iOS, Android, Smart TVs |
| Best for | Blu-ray archives, home theatre, camera footage | the Apple ecosystem, music libraries, audiobooks |
Only the soundtrack survives: the video stream is dropped, and the AC-3 audio inside the M2TS file is re-encoded as AAC-LC.
The size drop is dramatic because the video stream is where nearly all the data lives. A minute of M2TS runs around 206 MB; the extracted M4A is roughly 1.3 MB per minute.
Any subtitle tracks in the source are not part of an audio file and are dropped during extraction.
The source can carry more than one audio track, for example alternate languages or a commentary. Extraction takes the primary track.
This tool takes the audio track from inside a M2TS file, a BDAV MPEG-2 Transport Stream container from 2006, and saves it on its own as M4A. Everything visual is left behind.
M2TS comes from Blu-ray Disc Association and dates to 2006. It usually holds H.264, MPEG-2, or VC-1 video with AC-3, DTS, or LPCM sound, and those streams set the ceiling for anything converted out of it.
M4A comes from Apple / MPEG and dates to 2003. It carries audio in whichever codec it was encoded with (AAC-LC, HE-AAC, or ALAC), and without installing anything it plays on web browsers, Windows, macOS, iOS, Android, and smart TVs.
After converting your file, you can use Scriptivox transcription services to convert your audio to text. Perfect for meetings, interviews, podcasts, and more.
Quick access to the most commonly used file conversions
And many more format conversions supported