Definitions of captions categories

Elemental Live groups captions formats into several categories. You set up captions differently, depending on the category.

You don't need to understand how the categories work. But you must know what category your input captions and your output captions belong to, so that you can follow the correct procedure.

The categories are the following:

• Embedded. The captions are carried inside the video encode. For example, 608 embedded captions.

• Captions Object. The captions are in their own "captions encode." They are not part of the video encode. But they are in the same output as their corresponding video and audio encodes. For example, DVB-Sub captions are object-style captions.

• Sidecar. The captions are each in their own output, separate from the output that contains the video and audio. The event can contain "captions-only" outputs, for example, one for each language. For example, TTML are sidecar captions.

For more information the category for each captions format, see Step 4: Match formats to categories.