adts

.adts — Audio Data Transport Stream

MPEG · 1997

Developer
MPEG
Category
Audio
MIME Type
audio/aac
First Released
1997
Open Format
Yes
File Signature
The first byte of an ADTS frame header is typically 0xFF, followed by 0xF1 (indicating 'MPEG-2 AAC LC' for common profiles) or 0xFF, 0xF2, etc., depending on the specific AAC profile and stream version.
At a Glance
.adts
Audio Data Transport Stream

ADTS is a streaming audio container format, commonly used for AAC audio, that includes headers on each frame for easier processing.

Reviewed on June 6, 2026
Compression
Lossy (typically AAC)
Transparency
No
Editability
Medium
Best for
Streaming audio

Key Features

  • Contains specific headers for each audio frame.
  • Supports various audio object types, primarily AAC.
  • Includes synchronization and metadata for streaming.
  • Facilitates frame-level error detection and recovery.

Best For

  • Streaming audio applications requiring robust frame synchronization.
  • Situations where individual audio frames need to be easily identified and processed.
  • Broadcasting and digital radio transmission.
  • Real-time audio delivery over unstable networks.

Less Ideal For

  • Archiving large, uncompressed audio libraries.
  • Simple audio playback on basic devices without streaming support.
  • Editing audio where precise waveform manipulation is the primary goal.
  • Storing metadata beyond basic audio parameters.

Common Use Cases

  • Streaming AAC audio over networks.
  • Broadcasting digital audio.
  • Storing audio where frame-by-frame access is important.
  • Mobile audio playback applications.

How to Open It

  1. Most modern media players like VLC Media Player, Foobar2000, and Windows Media Player can open .adts files.
  2. Audio editing software such as Audacity can import and edit ADTS files.
  3. Many professional audio workstations (DAWs) support importing .adts files directly.

What is a .adts file?

ADTS (Audio Data Transport Stream) is a container format specifically designed for transmitting audio data, most commonly AAC (Advanced Audio Coding). It's an enhancement of the MPEG-2 Transport Stream, adding specific headers to each audio frame. These headers provide crucial information like frame size, sample rate, and channel configuration, making it ideal for streaming applications and scenarios where individual audio frames need to be processed independently. ADTS files are often used in broadcasting, online streaming, and mobile audio playback due to their robust structure for error resilience and straightforward parsing.

Programs That Open .adts Files

PlatformProgram
WindowsVLC Media PlayerFreeOfficial
AudacityFree
macOSVLC Media PlayerFreeOfficial
AudacityFree
LinuxVLC Media PlayerFreeOfficial
AudacityFree
AndroidVLC for AndroidFreeOfficial
iOSVLC for iOSFreeOfficial
Web BrowserOnline Audio ConvertersFree

How to Convert .adts Files

FormatMethod
.MP3VLC Media Player, Audacity, Online Converters
.WAVVLC Media Player, Audacity, Online Converters

Common Problems with .adts Files

⚠️ Player doesn't recognize the file.
Ensure your media player supports the ADTS container and the underlying audio codec (usually AAC). Update your player or try a more versatile player like VLC.
⚠️ Audio is choppy or cuts out during playback.
This can indicate network issues for streaming or a corrupted file. Try downloading the file again or test with a known good file. Check your internet connection if streaming.
⚠️ Cannot edit the audio directly without conversion.
While ADTS is streamable, for detailed editing, import the .adts file into an audio editor like Audacity or your DAW, which might handle the conversion internally or prompt you to convert.

Frequently Asked Questions

What's the difference between ADTS and raw AAC?▼

Raw AAC is just the audio data, while ADTS is a container that adds headers to each AAC frame, providing crucial synchronization and metadata for streaming and easier parsing.

Can ADTS files be played on all devices?▼

Most modern devices and media players support ADTS, especially those that handle AAC audio. However, very old or specialized devices might require conversion to a more basic format like MP3 or WAV.

Is ADTS good for storing music libraries?▼

While functional, ADTS is primarily designed for streaming. For extensive music libraries, formats like FLAC (for lossless) or MP3 (for compressed) might be more common and offer broader compatibility and metadata support.

Technical Details

The ADTS format wraps individual audio frames with synchronization information and metadata. Each frame begins with a 7-byte header containing details such as MPEG version, audio object type, sampling frequency, and channel layout. This structure allows decoders to synchronize with the audio stream and parse frames even if some are corrupted or missing, making it a reliable choice for real-time audio transmission.

Did You Know?

The 'TS' in ADTS stands for Transport Stream, reflecting its origins in digital broadcasting standards.
ADTS headers are relatively small, contributing minimally to the overall file size, which is advantageous for streaming efficiency.

Security Information

ADTS files themselves are generally safe as they only contain audio data. However, as with any file downloaded from the internet, exercise caution and ensure the source is reputable to avoid potential malware bundled with the file. Always use updated antivirus software.

Related Extensions

.AAC.MP3.M4A.OGG.TS