How to read the supported captions information
With captions, there are constraints on the ability to produce a specific output format from the input format.
You must make sure it is possible to produce the output formats that you want in a specific output type, from the captions in the input. For example, you must make sure that you can produce DVB-Sub captions in an Archive output, when the source is an HLS input that contains SCTE-20 captions.
To determine that the input type and input captions format can produce the chosen captions format in the chosen output type, consult the tables in the following sections.
Follow these steps
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Find the table for your output container. For example, Archive.
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In that table, look in the first column for the container type of the input that you have been provided with. For example, HLS.
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In the second column, find the input captions that are in that container. For example, SCTE-20.
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In the third column, look for the output captions format that you require. For example, DVB-Sub.
If the format is listed, then your input is suitable.
If the format is not listed, you must ask the provider of that input to provide a different source.
The tables for the supported formats are in the following sections:
