DTS to AC3 Converter

Convert DTS audio to AC3 (Dolby Digital) format with bitrate and channel controls

Click to upload file or drag and drop file here

Maximum file size: 200MB Supported formats: audio/dts, .dts, .dtshd, .dtsma

Upload a DTS file to convert to AC3

Higher bitrates preserve more quality. 448-640 kbps recommended for 5.1 audio.

Most AC3 content is 5.1 (6 channels) or stereo

Key Facts

Category
Images, Audio & Video
Input Types
file, select, checkbox
Output Type
file
Sample Coverage
4
API Ready
Yes

Overview

The DTS to AC3 Converter allows you to seamlessly transcode DTS, DTS-HD, and DTS-MA audio files into the widely compatible AC3 (Dolby Digital) format. With precise controls over bitrate, sample rate, and audio channels, you can easily optimize your surround sound or stereo tracks for home theater systems, media players, and legacy hardware.

When to Use

  • •When your smart TV or media player displays a 'format not supported' error or plays video with no sound due to a DTS audio track.
  • •When you need to compress large DTS-HD or DTS-MA tracks into smaller, highly compatible AC3 files to save storage space.
  • •When preparing multi-channel audio tracks for legacy home theater receivers that only decode Dolby Digital (AC3) signals.

How It Works

  • •Upload your source DTS, DTS-HD, or DTS-MA audio file up to the 200MB limit.
  • •Select your target bitrate, sample rate, and channel configuration such as 5.1 surround or stereo.
  • •Choose whether to preserve existing metadata tags and click convert to generate your optimized AC3 file.

Use Cases

Transcoding DTS-MA tracks from Blu-ray rips to AC3 5.1 for playback on Plex, Apple TV, or Sonos soundbars.
Downmixing multi-channel DTS audio to stereo AC3 for mobile devices, tablets, or standard TV speakers.
Reducing the file size of high-bitrate surround sound tracks for efficient cloud storage and streaming.

Examples

1. Converting Blu-ray DTS-HD to AC3 5.1 for Home Theater

Home Media Enthusiast
Background
A user has ripped a personal Blu-ray disc, but their older Sonos soundbar only supports Dolby Digital (AC3) and cannot decode the DTS-HD audio track.
Problem
The video plays perfectly, but there is no audio output from the soundbar due to the unsupported DTS format.
How to Use
Upload the extracted .dtsma file, select a bitrate of 640 kbps for maximum quality, set channels to 5.1 Surround (6 channels), and keep the sample rate on Auto.
Example Config
Bitrate: 640 kbps, Channels: 6 (5.1), Sample Rate: Auto, Keep Metadata: True
Outcome
An AC3 file is generated that plays rich 5.1 surround sound perfectly on the legacy soundbar.

2. Downmixing DTS to Stereo AC3 for Mobile Playback

Mobile Video Editor
Background
An editor needs to share a draft video with a client to watch on an iPad, but the source audio is in multi-channel DTS format which is incompatible and excessively large.
Problem
The client cannot hear the audio on their mobile device, and the file size needs to be minimized for quick sharing.
How to Use
Upload the .dts file, select a bitrate of 192 kbps, set channels to Stereo (2 channels), and set the sample rate to 48 kHz.
Example Config
Bitrate: 192 kbps, Channels: 2 (Stereo), Sample Rate: 48000, Keep Metadata: True
Outcome
A highly compressed, stereo AC3 file that plays flawlessly on any mobile device or tablet.

Try with Samples

audio, file
Copyright-Free DTS Audio Samples
DTS encoded audio samples featuring nature ambience and relaxing music for playback, conversion, and listening workflows
title token dts
audio
AMR Narrowband Audio Sample
AMR-NB voice audio sample for telephony playback, upload, and format conversion workflows
preferred input family audio
audio
GSM Audio Sample
GSM encoded audio sample for telephony playback, upload, and format conversion workflows
preferred input family audio
audio
Copyright-Free AAC Audio Samples
High-quality AAC encoded audio samples for testing and development, featuring nature sounds and meditation music with excellent compression
preferred input family audio
audio

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FAQ

What input formats are supported by this converter?

You can upload DTS (.dts), DTS-HD (.dtshd), and DTS-MA (.dtsma) audio files up to 200MB.

What is the recommended bitrate for 5.1 surround sound?

A bitrate of 448 kbps or 640 kbps is recommended to preserve high-quality multi-channel audio in the AC3 format.

Can I convert a 5.1 channel DTS file to stereo AC3?

Yes. Set the 'Audio Channels' option to 'Stereo (2 channels)' to downmix your multi-channel audio.

Does this tool preserve audio metadata?

Yes, by enabling the 'Keep Metadata' option, the converter will attempt to preserve title and artist tags in the output file.

What sample rates can I choose for the output?

You can keep the original sample rate using 'Auto', or manually select 48 kHz (Standard) or 44.1 kHz.

API Documentation

Request Endpoint

POST /en/api/tools/dts-to-ac3

Request Parameters

Parameter Name Type Required Description
audioFile file (Upload required) Yes Upload a DTS file to convert to AC3
bitrate select No Higher bitrates preserve more quality. 448-640 kbps recommended for 5.1 audio.
sampleRate select No -
channels select No Most AC3 content is 5.1 (6 channels) or stereo
keepMetadata checkbox No -

File type parameters need to be uploaded first via POST /upload/dts-to-ac3 to get filePath, then pass filePath to the corresponding file field.

Response Format

{
  "filePath": "/public/processing/randomid.ext",
  "fileName": "output.ext",
  "contentType": "application/octet-stream",
  "size": 1024,
  "metadata": {
    "key": "value"
  },
  "error": "Error message (optional)",
  "message": "Notification message (optional)"
}
File: File

AI MCP Documentation

Add this tool to your MCP server configuration: 

{
  "mcpServers": {
    "elysiatools-dts-to-ac3": {
      "name": "dts-to-ac3",
      "description": "Convert DTS audio to AC3 (Dolby Digital) format with bitrate and channel controls",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=dts-to-ac3",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

You can chain multiple tools, e.g.: `https://elysiatools.com/mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp`, max 20 tools.

Supports URL file links or Base64 encoding for file parameters.

If you encounter any issues, please contact us at [email protected]