How do I convert my M4A files to VTT? 
It's really easy to convert m4a files to VTT with Sonix. Simply follow these six simple steps and your audio files (*.m4a) will be converted to Web Video Text Tracks (*.vtt).
Step 1
Sign up for a free Sonix trial account—includes 30 minutes of free audio to vtt conversion.
Step 2
Upload your MPEG-4 Audio File file(s) (*.M4A) from your computer, Dropbox, or Google Drive.
Step 3
Select the language spoken in your M4A file. We support over 50 different languages. Then click the button 'Start Transcribing Now.'
Step 4
Sonix automatically extracts the audio from your M4A file and converts it to the Web Text Tracks .vtt format. It'll only take a few minutes so you can grab some coffee.
Step 5
Use the Sonix AudioText Editor to polish your VTT transcript. Simply correct any words in your browser.
Step 6
Click the 'Export' button. Select 'WebVTT file (.vtt)' from the dropdown to download a VTT version of your M4A file.
That's it! Your M4A file has now been converted to text!
Thousands of incredible customers trust Sonix to transcribe their M4A files 
Frequently Asked Questions for MPEG-4 Audio File (*.M4A) to vtt 
What is a M4A file?
An M4A audio file is a lossless audio format (and encoding algorithm) created by Apple and utilized on a variety of Apple products (including iPod, iPhone, iPad, iTunes, and Quicktime products). The m4a codec has been open-sourced so it is quite popular. M4A files are usually encoded with Advanced Audio Coding (AAC) which was originally designed to be the successor to MP3. Both MP3 and M4A files are used for audio-only files, and are both unprotected (free from DRM features). Protected files will have a *.m4p file extension. AAC or M4A files do have better audio quality when compared to MP3 files when encoded at the same bitrate due to some of the codec’s improvements such as compression based on perception and a smaller block size for changing audio sounds and signals.
Does Sonix transcribe audio files with a *.M4A file extension?
Yes, Sonix does automatically transcribe audio files with a .M4A file extension. Sonix is an online audio to text converter. Convert any audio (mp3, m4a, wav, ...) or video (mp4, mov, avi, ...) file to text without installing any software! Sonix quickly and accurately transcribes *.M4A files and converts them to text in a vtt format.
Know anyone who needs to convert MPEG-4 Audio File (.M4A) to vtt?
We'd appreciate it if you tell them about Sonix—the best way to convert M4A to vtt.
Other ways to convert your M4A audio files with Sonix
M4A to text
Use the most accurate speech-to-text technology to convert files: M4A to text.
M4A to docx
Accurately transcribe your M4A file to Microsoft Word Format (docx) so you can bring the transcript into your workflow.
M4A to PDF
Easily transcribe your M4A file to Adobe's Portable Document Format (pdf) so you can share them with colleagues.
M4A to subtitles
Create subtitles for your M4A files to make them more accessible for your audience.
M4A to srt
Quickly create subtitles from your M4A files and save them as SRTs, one of the most widely supported subtitle formats.
M4A to captions
Quickly and easily create closed captions for your M4A files so you can embed them in your video files.
Convert MPEG-4 Audio File to Web Video Text Tracks (.vtt) version with Sonix 
Sonix automatically transcribes and translates your audio/video files in 50+ languages. Easily search, edit, and share your media files. Sonix is an online, automated speech-to-text service that accurately converts files in the MPEG-4 Audio File (.M4A) format to the WebVTT (.vtt) format. Sonix converts audio to text quickly, accurately, and easily. Fast, accurate, and affordable. Millions of users from all over the world.
Includes 30 minutes of free transcription
