Convert AU to SRT

Sonix transcribes your AU file and exports it as SRT subtitles that you can use with any video platform or editor.

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5-min turnaround
All platforms
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DOCX
SRT/VTT
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53+ Languages
About This Format

Understanding AU files

What is a AU file?

Audacity project audio chunks

Audacity, an open source audio editor, breaks long tracks into small pieces so it can edit them more efficiently. Thus, when you save an Audacity Project File (.AUP), Audacity will automatically create a _data folder that has the same name as the AUP file and breaks the longer audio file into smaller chunks that have the .AU extension. Thus, when Audacity opens up the AUP Project File, it loads the individual AU files in the correct sequence automatically. The user should not move or rename and AU files in the _data folder.

Common Uses

  • Audacity audio editing
  • Audio project files

Audio Quality

Part of Audacity projects - quality depends on original source

Transcription Tips for AU

  • Export from Audacity as WAV or MP3 for best results
  • AU files are typically project chunks, not standalone audio

Where AU Files Come From

  • Audacity project folders
10x
Faster than real-time
Get your AU SRT in minutes
99%
Accuracy rate
Industry-leading AI for AU files
53+
Languages
Subtitles in any language
30+
Export formats
SRT, VTT, text, and more
How It Works

Convert AU to SRT in 6 steps

Step 1

Create account

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

Step 2

Upload file

Upload your AU 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 AU audio.

Step 5

Edit subtitles

Fine-tune subtitle timing and text with our editor.

Step 6

Export SRT

Download your AU subtitles as an SRT file.

Common Questions

Everything about AU to SRT

Can you convert AU to SRT subtitles?

Yes! Sonix transcribes your AU file with precise timestamps and exports it as SRT subtitles ready for any video platform.

What is an SRT file?

SRT (SubRip Subtitle) is the most widely supported subtitle format. It works with YouTube, Vimeo, Facebook, and all major video editors.

How accurate are the timestamps?

Sonix generates word-level timestamps accurate to the hundredth of a second, ensuring your subtitles sync perfectly with the audio.

Can I edit the SRT timing?

Yes! Our editor lets you adjust subtitle timing, merge or split captions, and customize character limits per line.

Does it work with YouTube?

Absolutely! Upload your SRT file to YouTube Studio and your subtitles will sync automatically with your video.

Can I set characters per line?

Yes! Customize your SRT with options for max characters per line, lines per caption, and maximum duration.

Why Sonix

Perfect SRT subtitles from AU files

Precise Timestamps

Word-level timing ensures your subtitles sync perfectly with the audio.

Universal Format

SRT works with YouTube, Vimeo, Facebook, and all major video platforms.

Customizable

Adjust timing, line length, and caption duration to your needs.

Editor Friendly

Import directly into Final Cut Pro, Premiere, DaVinci Resolve, and more.

Related

More ways to convert AU files

Other AU conversions

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Other file formats

AIFC to text
MPGA to text
WEBA to text
OGG to text
WAV to text
CAF to text
AIFF to text
OPUS to text
FLAC to text
MP2 to text
See all supported file formats
Reviews

Trusted by video creators

4.98 rating from 211 reviews

Your app is amazing. Seriously, I'm blown away by the technology. The speed, accuracy, and the fact that you can play the audio and that it highlights the transcript in sync.
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Matt R.
Seattle, Washington
Your product is incredible. I love it!
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David C.
Innsbruck, Austria
The accuracy of the initial transcription was better than any I've used to date, and making adjustments was very simple.
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Russ M.
Edmonton, Canada
Thank you for all of your help with my dissertation!!! Ya'll rock!!
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Miranda A.
Houston, TX
I found out out you guys because I had to do some transcribing for me yearbook class and my friend recommended you guys. It was a very easy process and it took hours off the time I had to a...
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Tracy M.
Brooklyn, NY USA
Amazed by the software even in quite mixed audio!
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Simon G.
Derby, United Kingdom
Sonix has revolutionized my life! I’m so thankful for the service you provide. It’s been amazing.
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Evelyn G.
Houston, TX
In one word? FAN-TAS-TIC!! The possibility to split the transcript to subtitles AND split them! THAT IS FANTASTIC!!
PK
Paul K.
Amsterfoot, Netherlands
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