/AWS1/MDCMPDACCIBILITYCAPTIO00

Optional. Choose Include to have MediaConvert mark up your DASH manifest with elements for embedded 608 captions. This markup isn't generally required, but some video players require it to discover and play embedded 608 captions. Keep the default value, Exclude, to leave these elements out. When you enable this setting, this is the markup that MediaConvert includes in your manifest:

Domain	/AWS1/RT_STRING
Primitive Type	STRG