Convert AMR to subtitles

Sonix transcribes your AMR file and creates timestamped subtitles in SRT, VTT, and other formats.

SRT & VTT
5-min turnaround
All platforms
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 subtitles in minutes
99%
Accuracy rate
Industry-leading AI for AMR files
53+
Languages
Subtitles in any language
30+
Export formats
SRT, VTT, FCPXML, and more
How It Works

Create subtitles from AMR 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 your AMR with word-level timestamps.

Step 5

Split subtitles

Customize line length, duration, and subtitle breaks.

Step 6

Export

Download subtitles as SRT, VTT, or other formats.

Common Questions

Everything about AMR subtitles

Can you create subtitles from AMR files?

Yes! Sonix transcribes your AMR file with word-level timestamps and creates professional subtitles in SRT, VTT, and other formats.

What subtitle formats are supported?

Export subtitles as SRT (most universal), VTT (web video), FCPXML (Final Cut Pro), and many more formats.

Can I customize subtitle timing?

Yes! Adjust max characters per line, lines per caption, max duration, and manually fine-tune any timing.

How do I add subtitles to my video?

Upload the SRT/VTT file to YouTube, Vimeo, or import into your video editor. You can also burn subtitles directly into the video.

Can I translate subtitles?

Yes! Sonix can translate your subtitles into 54+ languages, making your content accessible globally.

Are the subtitles accurate?

Sonix achieves up to 99% accuracy. Use our editor to make any corrections before exporting.

Why Sonix

Professional subtitles from AMR files

Multiple Formats

Export subtitles as SRT, VTT, FCPXML, and more for any platform.

Customizable

Control line length, duration, and style of your subtitles.

Translate

Create subtitles in 53+ languages from your original audio.

Burn-in Option

Permanently embed subtitles into your video with one click.

Related

More ways to convert AMR files

Other AMR conversions

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Other file formats

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OPUS to text
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See all supported file formats
Reviews

Trusted by content creators

4.98 rating from 211 reviews

I’ve now used Sonix.ai twice, and find the service simple and accurate. It’s exactly what I’ve been looking for to get text from audio and video recordings.
PS
Philip S.
Crestline, CA, USA
I love the platform and its been a transcription godsend.
CS
Caridad S.
New York, NY USA
I am very impressed with your program. The recording was not crystal clear and yet I received a perfect transcription...Wow! I would recommend this to anyone.
LL
Lynn L.
Surrey, BC, Canada
I used 30 min free demo for my Google Meeting recording. It is fabulous. I am shocked how Sonix managed to be so accurate.
SH
Sibel H.
Zurich, Switzerland
Sonix is a godsend service boosting my productivity and alleviating a major source of stress in my life.
OF
Olivier F.
Adachi, Japan
The speech to text was fast and very accurate.
JG
Janine G.
Cape Town, South Africa
What I was able to do with Sonix was amazing. Transcribed and translated in minutes on remote Guatemalan WiFi!
EO
Emily O.
Guatemala City, Guatemala
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
Read more testimonials
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