Convert AIFC to captions

Sonix transcribes your AIFC file and creates closed captions that make your content accessible to everyone.

Free to start — no credit card required.See pricing

ADA compliant
5-min turnaround
Accessible
AIFC conversion guide

Create captions from AIFC in 6 steps

  1. 1
    Create account~30 sec

    Sign up for a free Sonix trial with 30 free minutes.

  2. 2
    Upload file~1 min

    Upload your AIFC file from your computer or cloud storage.

    44+ formats supported
  3. 3
    Select language~10 sec

    Select the language spoken in your file.

    54+ languages
  4. 4
    Auto-transcribe~5 min

    Sonix AI transcribes your AIFC with word-level timestamps.

  5. 5
    Edit captions~2 min

    Fine-tune timing and formatting for accessibility.

  6. 6
    Export~10 sec

    Download your closed captions as SRT or VTT files.

    30+ export formats
The AIFC file format

Understanding AIFC files

What is a AIFC file?

Compressed variant of AIF with smaller file sizes

Similar to the .AIF file format, the .AIFC file format was developed by Apple in 1988 and is based on the IFF (Interchange file format). However, the .AIFC is the compressed variant of the .AIF file format for users who are a bit more sensitive about file size. The AIFC format is used by media players and gaming consoles.
AIFC files contains CD-quality audio; similar to a .WAV file, but uses audio compression to reduce file size. So they are more similar to MP3 files and may use ULAW, ALAW, or G722 compression. You can also see AIFC files also referred to as AIFF-C files.

Common uses for AIFC files

  • Gaming audio
  • Media players
  • Compressed CD-quality audio
  • Gaming consoles
  • Legacy media applications
  • Professional audio software

Who works with AIFC files?

Sound designers and macOS-based audio engineers encounter AIFC in Apple and legacy professional audio workflows, and game and media-player developers have shipped audio in the format on consoles and playback software. Audio archivists also work with AIFC when digitizing legacy Mac-era projects, where its µ-law and A-law codecs often carry recorded speech.

AIFC vs AIFF: which should you use?

AIFF stores uncompressed PCM audio, while AIFC extends the same IFF-based structure to support compression codecs such as µ-law, A-law, and G.722. Choose AIFF when you need bit-for-bit fidelity for editing or archiving; choose AIFC when you want AIFF compatibility with smaller files. Most software that reads AIFF also reads AIFC, though older tools may not support every codec.

Convert AIFF to text
10x
Faster than real-time
Get your AIFC captions in minutes
99%
Accuracy rate
Industry-leading AI for AIFC files
53+
Languages
Captions in any language
30+
Export formats
SRT, VTT, and TTML
AIFC conversion FAQ

AIFC captions: frequently asked questions

Can you create closed captions from AIFC files?

Yes! Sonix transcribes your AIFC 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 won't my AIFC file play on Windows?

Many Windows applications lack decoders for the compression codecs AIFC can contain, such as µ-law, A-law, and G.722. Converting the file to WAV or MP3, or uploading it to a service that decodes AIFC, works around this.

Do I need to convert AIFC to WAV before transcribing?

No. AIFC files can be uploaded directly and are decoded automatically before transcription, so a separate conversion step is not required.

Transcription software reviews

Trusted by accessibility teams

4.98 rating from 211 reviews

99% accuracy. Every word matters.

AI transcription and translation in 54+ languages.

30 minutes free
No credit card
Cancel anytime