Convert MTS to captions

Sonix transcribes your MTS file and creates closed captions that make your content accessible to everyone.

ADA compliant
5-min turnaround
Accessible
Audio
Video
DOCX
SRT/VTT
PDF
53+ Languages
About This Format

Understanding MTS files

What is a MTS file?

HD camcorder video format (AVCHD)

MTS files are also Advanced Video Codec High Definition (AVCHD) video files that contain high definition MPEG videos that have been captured by certain models of video camcorders. Originally designed by Sony and Panasonic for their High Definition camcorders, JVC, Sanyo, and Canon camcorders also now record audio and video in the MTS file format. Typically MTS videos have high definition streams and support both 720p and 1080i HD videos.

Common Uses

  • HD camcorder recordings
  • Consumer video production
  • Event videography

Audio Quality

High-definition video and audio quality

Transcription Tips for MTS

  • High-quality audio from camcorders
  • 720p and 1080i content supported

Where MTS Files Come From

  • Sony camcorders
  • Panasonic camcorders
  • Canon camcorders
  • JVC camcorders
10x
Faster than real-time
Get your MTS captions in minutes
99%
Accuracy rate
Industry-leading AI for MTS files
53+
Languages
Captions in any language
30+
Export formats
SRT, VTT, and TTML
How It Works

Create captions from MTS in 6 steps

Step 1

Create account

Sign up for Sonix's free trial. Includes 30 minutes free.

Step 2

Upload file

Upload your MTS file from your computer or cloud storage.

Step 3

Select language

Choose from 54+ languages spoken in your file.

Step 4

Auto-transcribe

Sonix AI transcribes your MTS with word-level timestamps.

Step 5

Edit captions

Fine-tune timing and formatting for accessibility.

Step 6

Export

Download closed captions in SRT and VTT formats.

Common Questions

Everything about MTS captions

Can you create closed captions from MTS files?

Yes! Sonix transcribes your MTS file with precise timestamps and creates closed captions in standard formats.

What's the difference between subtitles and closed captions?

Closed captions include non-speech elements like [music], [applause], and speaker identification. They're designed for deaf and hard-of-hearing viewers.

Are Sonix captions ADA compliant?

Yes! Sonix captions meet accessibility requirements when properly reviewed and edited. Our editor helps ensure timing and accuracy standards.

What caption formats are supported?

Export captions as SRT, VTT, or TTML. Each format has specific use cases.

Can I add sound descriptions?

Yes! Use our editor to add [music], [laughter], and other non-speech descriptions for full accessibility.

Do captions help with SEO?

Absolutely! Captions make your video content searchable and improve accessibility, both of which can boost SEO rankings.

Why Sonix

Accessible captions from MTS files

Accessibility First

Create captions that make your content accessible to deaf and hard-of-hearing viewers.

ADA Compliant

Meet accessibility requirements with properly formatted closed captions.

Sound Descriptions

Add non-speech elements like [music] and [applause] for full context.

SEO Benefits

Captions make video content searchable and improve discoverability.

Reviews

Trusted by accessibility teams

4.98 rating from 211 reviews

Easy to use and surprisingly accurate.
JB
Jon B.
Shakopee, MN, USA
The title says it all. Sonix is the simplest, the most accurate transcription service I have ever tried. Even quiet or muffled speech is perfectly produced. If you need one, this i...
OO
Ozkan O.
Istanbul, Turkey
I tried several programs and Sonix was by far the best one.It gave me very accurate scripts
KA
Keti A.
Tbilisi, GA, USA
I heard about you from my friend. I found my transcription to be almost exactly what is in the audio file. Love it...continue what you are doing. Sonix is excellent. I appreciate t...
HG
Hardik G.
Ottawa, Canada
I've used other platforms that don't do a good job at all. Sonix was close to perfect!
TP
Tamara P.
Riverside, CA, USA
Sonix is a godsend service boosting my productivity and alleviating a major source of stress in my life.
OF
Olivier F.
Adachi, Japan
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