Convert AIFF to captions

Sonix transcribes your AIFF 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 AIFF files

What is a AIFF file?

Apple's standard uncompressed audio format

The AIFF file format was developed by Apple and is based on the Electronic Arts .IFF file format. Standard CD audio AIFF files are sampled at 44.1KHz, are 16-bit, and have two channels for stereo sound. You’ll usually see the extension .AIFF from files that were saved by macOS machines. AIFF files are uncompressed and do have larger file sizes to accomodate the higher quality audio that are stored on them.

Common Uses

  • Professional music production
  • Broadcast audio
  • Lossless audio archiving

Audio Quality

Lossless CD-quality audio, approximately 10MB per minute

Transcription Tips for AIFF

  • Ideal for transcription - full audio fidelity
  • Consider converting to MP3 for faster uploads

Where AIFF Files Come From

  • macOS audio applications
  • GarageBand exports
  • Professional DAWs
10x
Faster than real-time
Get your AIFF captions in minutes
99%
Accuracy rate
Industry-leading AI for AIFF files
53+
Languages
Captions in any language
30+
Export formats
SRT, VTT, and TTML
How It Works

Create captions from AIFF in 6 steps

Step 1

Create account

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

Step 2

Upload file

Upload your AIFF 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 AIFF 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 AIFF captions

Can you create closed captions from AIFF files?

Yes! Sonix transcribes your AIFF 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 AIFF 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

Sonix saves me 60% of the time editing. No more manual trascription nightmare with writing down timecodes, and sending emails. I think you are changing the game here! Bravo :)
JS
Jan S.
Brno, Czechnia
The accuracy, that's what I like the most.
DV
Douglas V.
Santiago de Surco, Peru
The accuracy of the AI voice recognition is amazing! Sonix is by far the most accurate of the 5 or 6 services that I tested.
BB
Bill B.
Phoenix, AZ USA
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
Sonix is top class. I would highly recommend Sonix. Especially working in a multi-lingual environment like the European Parliament.
MD
Mark D.
Ixelles-Elsene, Belgium
Your service is very impressive and I love the UI. And that's an AI expert speaking ;-)
SE
Sebastien E.
Hanoi, Vietnam
Get Started

Create AIFF captions now

Try Sonix free with 30 minutes of transcription. No credit card required.

99% accuracy. Every word matters.

AI transcription and translation in 54+ languages.

30 minutes free
No credit card
Cancel anytime