Does something have to be done to activate the "D" button on my remote?
And what kinds of programs offer the option to use it?
it will vary which channels and even show to show what will actually use the descriptive video service. There is nothing you should need to do to have it activated. So long as you press the CBL button at the top of the remote first, assuming you have a remote with that button.
If that is from a recording it is possible the box actually recorded while descriptive video was turned on or a glitch caused that. Meaning it is on the recording itself at this point.
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