Convert AMR to VTT

Sonix transcribes your AMR file and exports it as WebVTT captions perfect for HTML5 video and web platforms.

HTML5 ready
5-min turnaround
Web compatible
Audio
Video
DOCX
SRT/VTT
PDF
53+ Languages
About This Format

Understanding AMR files

What is a AMR file?

Speech-optimized mobile audio format

AMR was adopted as the standard speech codec by the 3rd Generation Partnership Project Group (3GPP)and is now widely used in GSM and UMTS for 3G mobile phones and devices.
The Adaptive Multi-Rate (AMR) audio file format that is optimized for speech coding. Thus, most audio saved in the AMR file format is compressed and optimized for human speech frequency ranges. Thus, the AMR speech codec consists of a multi-rate narrowband speech codec that encodes narrowband (200–3400 Hz) signals at variable bit rates ranging from 4.75 to 12.2 kbit/s with normal quality speech starting at 7.4 kbit/s. Since it is used mainly for mobile speech communication, it chooses between the 8 different bit rates based on link conditions.

Common Uses

  • Voice recordings on mobile
  • Voicemail messages
  • GSM phone calls

Audio Quality

Designed for speech; may struggle with music or ambient audio

Transcription Tips for AMR

  • Optimized for speech - works well for voice transcription
  • Limited frequency range may affect music transcription

Where AMR Files Come From

  • Android voice recorders
  • Mobile phone voicemail
  • 3G phone recordings
10x
Faster than real-time
Get your AMR VTT in minutes
99%
Accuracy rate
Industry-leading AI for AMR files
53+
Languages
Captions in any language
30+
Export formats
VTT, SRT, text, and more
How It Works

Convert AMR to VTT in 6 steps

Step 1

Create account

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

Step 2

Upload file

Upload your AMR file from your computer or cloud storage.

Step 3

Select language

Choose from 53+ languages spoken in your file.

Step 4

Auto-transcribe

Sonix AI transcribes and timestamps your AMR audio.

Step 5

Edit captions

Fine-tune caption timing and text with our editor.

Step 6

Export VTT

Download your AMR captions as a WebVTT file.

Common Questions

Everything about AMR to VTT

Can you convert AMR to VTT captions?

Yes! Sonix transcribes your AMR file with precise timestamps and exports it as WebVTT captions for web video.

What is a VTT file?

WebVTT (Web Video Text Tracks) is the native caption format for HTML5 video. It's supported by all modern browsers and video platforms.

VTT vs SRT - which should I use?

Use VTT for web video (HTML5) and SRT for video editors. VTT supports advanced styling like colors and positioning.

Does VTT support styling?

Yes! VTT supports CSS styling for colors, fonts, positioning, and more. Customize how your captions appear on screen.

Is VTT compatible with browsers?

VTT is supported by Chrome, Firefox, Safari, Edge, and all modern browsers. It's the web standard for video captions.

Can I use VTT with video.js?

Absolutely! VTT works seamlessly with video.js, Plyr, JW Player, and other HTML5 video players.

Why Sonix

Web-ready VTT from AMR files

HTML5 Native

VTT is the web standard for captions, supported by all modern browsers.

Styleable

Apply CSS styling for colors, fonts, positioning, and more.

Precise Timing

Word-level timestamps ensure perfect sync with your video.

Universal Support

Works with all HTML5 video players and web platforms.

Related

More ways to convert AMR files

Other AMR conversions

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Other file formats

MPA to text
AIFC to text
XSPF to text
WMA to text
WEBA to text
AIF to text
GSM to text
OPUS to text
AAC to text
MP2 to text
See all supported file formats
Reviews

Trusted by web developers

4.98 rating from 211 reviews

Of all the programs that do this, I found you the best!
YC
Yaron C.
Tel Aviv, Israel
I loved how accurate you are even in Dutch!
GP
Gemma P.
East Falmount, MA, USA
Your product is incredible. I love it!
DC
David C.
Innsbruck, Austria
I love it! It basically nailed every word.
MP
Mark P.
Los Angeles, CA USA
So fast, so easy. This has saved me hours for every 20 minutes of recording.
WS
Wendy S.
Danvers, MA USA
Very accurate transcription, ease of use and customer service. Price was also very reasonable.
FK
Feisal K.
Seattle, WA, USA
You guys were SO easy to use. Competitors made my life so complicated but you guys were a breeze to work with!
MG
Mariana G.
Mexico City, Mexico
The transcription service was awesome. I can’t thank Sonix enough.
GI
Glenda I.
San Diego, CA USA
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