Convert AVI to captions

Create accessible closed captions from your AVI videos. Bring legacy content into compliance with modern accessibility requirements.

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

Understanding AVI files

What is a AVI file?

Classic Windows video format with broad compatibility

The .AVI file (also known as an Audio Video Interleave file) is a very popular video format with both audio and video usually stored in an uncompressed format. The AVI video file was first developed by Microsoft in 1992 and for a long time was the standard video format for Windows machines. AVI files are a multimedia container format that stores audio and video using a variety of codecs; popular codecs with high compression ratios were DivX and XviD.
AVI files can be compressed, but typically they use less compression and are larger than many other popular video formats like MOV and MPEG. AVI files can be created without any compression and results in a “lossless AVI file.” These lossless AVI files have really large filesizes (can range between 2-3GB per minute of video). However, a lossless AVI file will not lose quality overtime and allows for playback without requiring any codecs to be installed on the user’s computer.

Common Uses

  • Video editing projects
  • Archive footage
  • Windows video playback
  • Legacy video content

Audio Quality

Quality varies by codec; uncompressed AVI preserves full quality

Transcription Tips for AVI

  • Uncompressed AVI provides excellent audio quality
  • Check audio codec - DivX/XviD AVI transcribes well
  • Lossless AVI offers best quality but very large files

Where AVI Files Come From

  • Windows video cameras
  • Screen recording software
  • Video editing exports
  • Archive collections
10x
Faster than real-time
Get your AVI captions in minutes
99%
Accuracy rate
Industry-leading AI for AVI files
53+
Languages
Captions in any language
30+
Export formats
SRT, VTT, SCC, and more
How It Works

Create captions from AVI in 6 steps

Step 1

Create account

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

Step 2

Upload file

Upload your AVI 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 AVI with word-level timestamps.

Step 5

Edit captions

Fine-tune timing and formatting for accessibility.

Step 6

Export

Download closed captions in SRT, VTT, or SCC format.

Common Questions

Everything about AVI captions

What's the difference between captions and subtitles for AVI?

Captions include speaker identification and sound descriptions (music, applause, door closing) for deaf and hard-of-hearing viewers. Subtitles assume the viewer can hear and focus on translating dialogue.

Can I make old AVI archives ADA compliant?

Yes! Sonix generates captions meeting ADA and Section 508 requirements. Add speaker labels and sound descriptions to bring legacy content into compliance.

Can I add sound descriptions to AVI captions?

Yes! After transcription, add non-speech descriptions like [music playing], [door closes], or [applause] in Sonix's editor for fully accessible captions.

How do I create closed captions for archived AVI training videos?

Upload your AVI, transcribe with Sonix, add speaker labels, then export to your required caption format. Perfect for bringing legacy training content into compliance.

What caption format works for institutional AVI archives?

SRT is most universal for archives. For broadcast or specific compliance needs, export to SCC or STL formats which meet FCC requirements.

How accurate are AI-generated captions from old AVI?

Accuracy depends primarily on audio quality, not file age. Clear audio in AVI files transcribes at 99%+ accuracy. Review and correct any errors for professional results.

Why Sonix

Accessible captions from AVI 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.

Related

More ways to convert AVI files

Other AVI conversions

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Other file formats

WMV to text
MXF to text
MP4 to text
TS to text
M2V to text
MOOV to text
OGX to text
M4V to text
FLV to text
QT to text
See all supported file formats
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
Faster than my captioning department and so easy to create subtitles!
AL
Andy L.
Hilton, NY, USA
It's simply an amazing resource for anyone working with the spoken or written word.
DW
Dennis W.
Daly City, CA, USA
I am thrilled with the level of accuracy and the easy if which I am able to listen to and adjust the transcript. It’s very user friendly.
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Jacqui H.
Brisbane, Australia
I was simply awed by speed and accuracy of your transcription service.
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Myung K.
Queens, NY, USA
The speech to text was fast and very accurate.
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Janine G.
Cape Town, South Africa
You saved me! I got everything done in three days and I was sure it will take me a month.
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Wojciech O.
Gandsk, Poland
I really enjoyed how quickly and accurate the transcription system was. Will definitely use again in the future. I have recommended you to a friend.
WP
Walker P.
Wheeling, WV USA
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