Audio Embed Export
Audio Embed Export lets you add an audio description track to an existing audio or video file without rebuilding the entire program. It is useful when you already have a finished media file and a separate AD audio file, and you need to create a new deliverable where the AD track is carried inside the same container.
This workflow is available in the desktop application for users with the Audio Description plugin. The exporter uses the bundled FFmpeg engine to copy the original media streams and add the selected audio tracks to a new output file.
Opening Audio Embed Export​
Open the File Export window and choose Audio Embed Export. The modal asks for three paths before export can begin:
- Original Media File is the source video or audio file that will receive the embedded AD track.
- AD Audio File is the rendered or mixed audio description file you want to add.
- Target Folder is where Closed Caption Creator writes the new media file.
After selecting the original media and AD audio files, click Scan Tracks. Closed Caption Creator probes both files and builds a list of available audio streams.
Choosing Output Audio Tracks​
The Output Tracks table controls the order and metadata of the audio streams in the exported file. By default, the exporter includes the original file's audio tracks first, followed by the audio tracks from the AD file.
You can reorder tracks, remove tracks, or add another row from the available source streams. This is useful when a deliverable needs a specific channel order, such as keeping the original stereo mix first and placing the AD mix after it.
Each output row includes a language field. If a language code is entered, Closed Caption Creator writes it as audio stream metadata in the exported file. The AD track defaults to ad, while original audio tracks use any language metadata found during the scan.
Codec and Filename Options​
The Audio Codec selector controls how output audio streams are written:
- Copy preserves the source audio encoding when possible and is the default choice.
- PCM 16-bit writes audio as
pcm_s16le. - PCM 24-bit writes audio as
pcm_s24le. - AAC writes audio as
aac.
Use Copy when the existing streams are already in the required format and you want to avoid unnecessary re-encoding. Choose PCM or AAC when the delivery specification requires a specific audio codec.
The filename suffix defaults to _ADembed. For example, exporting Program.mov with the default suffix creates Program_ADembed.mov in the target folder.
What Gets Copied​
Audio Embed Export copies video, subtitle, data, and attachment streams from the original media file. Only the selected audio output rows are mapped into the final file. This means you can preserve the original video essence and container metadata while controlling which audio streams appear in the result.
Because the exporter writes a new file, the original media and AD audio files are not modified.