- Extension
- .aac
- .vtt
- Format
- Binary
- Text
- Category
- Audio
- Subtitles
- Developer
- Bell Labs, Fraunhofer Institute, Dolby Labs, Sony and Nokia
- W3C
- Description
- 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.
- WebVTT (Web Video Text Tracks) is a text file format that is used to store subtitles and captions for online video content. It is supported by many web browsers and can be used to add captions and subtitles to HTML5 videos.
- MIME Type
- audio/x-aac
- text/vtt
