# Supported source captions and output captions in a captions-only output container
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This table describes the caption formats that can be included on their own in an output. With this option, *the container is always a raw container that contains only the captions* (video would be in another container that may be a raw container or may be some other type).

If you have one of the source caption formats listed in the first column – regardless of the source container – you can convert it to an external captions file and include it in a raw container that contains only that captions file.

<a name="table-captions-captions-only-output-container"></a>[\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/elemental-live/latest/ug/captions-captions-only-output-container.html)