DocumentationAEMUser Guide

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Multi Audio and Multi Captions in Dynamic Media with OpenAPI capabilities Videos multi-audio-captions-dynamic-media-with-openapi-capabilities

Last update: June 5, 2026
  • Applies to:
  • Experience Manager as a Cloud Service

CREATED FOR:

  • User

Adobe Experience Manager Assets Dynamic Media with OpenAPI capabilities enables you to add multiple audio tracks and caption files to video assets. This capability improves accessibility, supports localized playback experiences, and enhances video delivery for global audiences.

These features are managed directly from the Captions & Audio tracks tab on the video asset properties page.

NOTE
Multi Audio and Multi Caption support in Dynamic Media with OpenAPI capabilities is a limited availability feature. You can enable it by creating a support ticket.

All supported Dynamic Media with OpenAPI capabilities video formats support multiple captions and audio tracks.

Before you begin before-you-begin

Ensure the following:

  • The video asset is available in AEM Assets
  • Supported audio format: .mp3
  • Supported caption format: .vtt
NOTE
Dynamic Media with OpenAPI capabilities does not require a video profile. The Captions & Audio tracks tab is available for all video assets by default.

Add multiple audio tracks add-audio-tracks

Captions and Audio tracks tab

To add audio tracks to a video:

  1. Navigate to the uploaded video asset.
  2. Select the asset and click Properties.
  3. Open the Captions & Audio tracks tab.
  4. Click Upload Audio Tracks.
  5. Select one or more .mp3 files.
  6. Click Draw icon next to the audio track file name.

In the Edit Audio Track dialog box:

  • Filename - Default filename derived from the uploaded file.
  • Language - Select the audio language.
  • Type - Original, Standard, or Audio Description.
  • Label - Display name shown in the player audio selector.

Audio Track dialog

  1. Click Save.
  2. Repeat for additional audio tracks if required.
  3. Click Save & Close.
NOTE
Each audio track label must be unique.

Add multiple captions add-captions

Captions and Audio tracks tab

To add captions:

  1. Open the video Properties page.
  2. Open Captions & Audio tracks tab.
  3. Click Create Caption > Upload files.
  4. Select one or more .vtt files.
  5. Click Draw icon next to caption file.

Upload caption dialog

In the Edit Caption dialog box:

  • Filename - Default uploaded filename.
  • Language - Caption language.
  • Type - Subtitle or Caption.
  • Label - Display name shown in player caption selector.

Edit Caption dialog

  1. Click Save.
  2. Click Save & Close.
NOTE
Editing subtitle text is not supported. Update file externally and re-upload.

Approval behavior approval-behavior

Approval depends on parent video asset:

  • If Approved, new files are auto-approved after processing.
  • If not approved, they follow parent lifecycle.

View file lifecycle status status

  • Approved - Ready for playback
  • Rejected - File rejected

Set default audio track set-default-audio

By default, original audio is used.

  1. Open Captions & Audio tracks.

  2. Select audio track.

  3. Click Set as Default.

    Set as Default action

  4. Click OK.

  5. Click Save & Close.

Preview audio and captions preview-audio-captions

After processing:

  1. Open video preview.

    Video preview player

  2. Use player controls:

    • Switch audio tracks
    • Enable captions

Download caption or audio files download-tracks

  1. Select caption or audio file.

  2. Click Download.

    Download track action

  3. Click Download.

The selected file is downloaded to your local system.

Delete caption or audio files delete-tracks

  1. Select caption or audio file.

  2. Click Delete.

    Delete track action

  3. Click OK.

Original audio extracted from video cannot be deleted.

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