Doug Johnson Productions

Scope guide · Production tools

Caption Data

Inspect supported CEA-608/708 payloads and derived local-transcription text beside the program picture.

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Learn & Reference / Scope library / Caption Data

Are the expected caption words arriving?

Add this view from Add scope > Caption Data, then choose the input you want to inspect. Use the pane's i button for its in-app reading guide.

Read this example.

Application-rendered CEA-608 CC1 test fixture carrying the text HI.
Application-rendered CEA-608 CC1 test fixture carrying the text HI. Click the image for a larger view.
  1. Source time and timecode connect the row to the input.
  2. Type/standard and Placement identify CEA-608 and CC1.
  3. Caption text, byte count and payload preview provide readable text and underlying evidence.

Try it yourself.

  1. Select a source supplying supported captions.
  2. Choose a row to inspect its payload and compare intended text.
  3. Enable the Picture caption overlay, or configure Audio transcription for derived text.

Useful controls.

  • Channel/service choices follow supplied caption data.
  • Picture can overlay a selected channel/service as text.
  • Local transcription exposes derived text and segment/token metadata after model setup.

The screenshot is a generated fixture. Treat embedded captions and local transcription as distinct text sources in a real program.