How to convert AAC to subtitles with automated transcription
Sign up for a free Sonix trial account—includes 30 minutes of free AAC to subtitles conversion.
Upload the Advanced Audio Coding File file(s) (*.AAC) from your computer, Dropbox, Google Drive, or by dragging it on the page.
Choose the language spoken in the uploaded AAC file. We support over 37 different languages including English, Spanish, German, and French. Then click the 'Start Transcribing Now' button.
Sonix will then automatically transcribe the audio from your AAC file and convert it to a simple text format. Grab some tea, it will take only a few minutes.
Use the Sonix AudioText Editor to polish your transcript before we convert it to a subtitle. It's like a word processor: simply type in your browser to correct any words.
Click the 'Export' button. Choose either 'Subrip subtitle file (.srt)' or 'WebVTT file (.vtt)' from the dropdown to download the subtitle version of your AAC file. You can also adjust the character length and time duration length of each subtitle.
That's it! Your AAC file has now been converted to subtitles and is ready for the next step in your workflow!
Thousands of incredible customers create subtitles from their AAC files with Sonix
Convert AAC audio or speech to subtitle
Frequently Asked Questions for Advanced Audio Coding File (*.AAC)
What is a AAC file?
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.
Does Sonix transcribe audio files with a *.AAC file extension?
Yes, Sonix does automatically transcribe audio files with a .AAC file extension. Sonix is an online audio to text converter. Convert any audio (aac, mp3, m4a, wav, ...) or video (mp4, mov, avi, ...) file to text without installing any software! Sonix quickly and accurately transcribes *.AAC files and converts them to text in a subtitle format.
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Other ways to convert your AAC audio files with Sonix
Convert Advanced Audio Coding File to subtitles (SRT & VTT) with Sonix
Sonix transcribes your audio and video files in over 37 languages so they are easy to search, edit, and share. Sonix is an online, fully-automated speech to text service that quickly converts Advanced Audio Coding File files to subtitles. Sign up today and start transcribing.
Includes 30 minutes of free transcription