Convert AAC to SRT

Generate perfectly-timed SRT subtitle files from your AAC audio. Convert streaming content and iTunes audio into subtitles ready for any video platform.

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

Understanding AAC files

What is a AAC file?

High-quality compressed audio, Apple's preferred format

Advanced Audio Coding (AAC) is the default encoding used by Apple iTunes and the iTunes Music Store. It is a compressed audio file similar to an .MP3 file, but offers several performance improvements; examples include a higher coding efficiency for both stationary and transient signals, a simpler filterbank, and better handling of frequencies above 16 kHz; maintains quality nearly indistinguishable from the original audio source.

Common Uses

  • iTunes music
  • Apple podcasts
  • Streaming audio
  • Professional audio distribution

Audio Quality

Superior quality to MP3 at equivalent bitrates

Transcription Tips for AAC

  • AAC at 128kbps+ yields excellent transcription accuracy
  • Supports clear speech frequencies well

Where AAC Files Come From

  • Apple iTunes Store
  • Apple Music
  • iOS voice recordings
  • Podcast apps
10x
Faster than real-time
Get your AAC SRT in minutes
99%
Accuracy rate
Industry-leading AI for AAC files
53+
Languages
Subtitles in any language
30+
Export formats
SRT, VTT, text, and more
How It Works

Convert AAC 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 AAC 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 AAC audio.

Step 5

Edit subtitles

Fine-tune subtitle timing and text with our editor.

Step 6

Export SRT

Download your AAC subtitles as an SRT file.

Common Questions

Everything about AAC to SRT

Can I create SRT subtitles from an AAC file?

Yes! Upload your AAC file from any source - iTunes, streaming downloads, or recording apps. Sonix transcribes with word-level timestamps and exports to SRT format.

How accurate are AAC-to-SRT subtitle timings?

AAC's efficient encoding preserves audio quality for precise timestamp generation. Sonix creates word-level timestamps accurate to within a few hundred milliseconds.

Why choose AAC for subtitle creation?

AAC's superior compression at lower bitrates means cleaner audio even in smaller files, which helps transcription accuracy. For streaming content, AAC often provides better source quality.

Can I upload AAC SRT subtitles to YouTube?

Absolutely! SRT files generated from AAC audio work perfectly on YouTube, Vimeo, and all major platforms. Upload the .srt file to your video's caption settings.

How do I edit AAC subtitle timing?

Use Sonix's visual editor to adjust timing by dragging boundaries or entering specific timestamps. Play the audio while editing for perfect sync.

Can I include speaker labels from AAC audio?

Yes! Enable speaker detection when exporting to SRT. AAC's quality preservation helps accurate speaker identification in multi-person content.

Why Sonix

Perfect SRT subtitles from AAC 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 AAC files

Other AAC conversions

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Other file formats

OGG to text
AIFF to text
MUS to text
CAF to text
AMR to text
MP3 to text
OGA to text
AU to text
OPUS to text
WAV to text
See all supported file formats
Reviews

Trusted by video creators

4.98 rating from 211 reviews

I heard about you from my friend. I found my transcription to be almost exactly what is in the audio file. Love it...continue what you are doing. Sonix is excellent. I appreciate that.
HG
Hardik G.
Ottawa, Canada
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
So fast, so easy. This has saved me hours for every 20 minutes of recording.
WS
Wendy S.
Danvers, MA USA
I've tried several different digital software packages and nothing has even approached giving me a usable transcription. The results from Sonix are the best I've seen. And fast. I'...
DK
Dan K.
Los Angeles, CA USA
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
Thank you for all of your help with my dissertation!!! Ya'll rock!!
MA
Miranda A.
Houston, TX
The transcription was fast and accurate.
JT
John T.
Chanthaburi, Thailand
I've used other platforms that don't do a good job at all. Sonix was close to perfect!
TP
Tamara P.
Riverside, CA, USA
Read more testimonials
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