What is AAC?
A lossy audio format widely used in streaming and mobile devices.
Technical details
Raw AAC files commonly use ADTS headers around access units; a raw AAC stream does not provide a general-purpose track/container index. [1]
Background and compatibility
An AAC elementary stream should be distinguished from AAC carried in MP4/M4A, which adds timing and metadata structures. [1]
Sources and references
- FFmpeg Formats DocumentationFFmpeg Project
Preview on your device
Playback when the browser supports the audio codec.
Conversion support
Choose a file in the workspace to see the available output formats and options. A supported container may still contain an unsupported codec.
Read the format reference on Wikipedia ↗