Re: Does HDMI do Closed Captioning?
There is no specific button for it on my remote (the DVR) either it has a settings button which will bring up the settings menu and somewhere buried in there is a closed caption setting to turn CC on and off and also select which CC type you want and language.
If you were to use an over the air HD antenna you could use the TV's CC feature. However, since you are receiving your video signal from the cable company the CC signal is encrypted in the signal so the cable box has to decrypt the signal, which is why you have to turn on the CC feature through the cable DVR. Hope that makes sense.
The video signal should just be a straight throughput through your receiver to your TV. Receivers don’t usually do any video processing so running the signal like you mentioned should not have an effect on CC.
BTW, HDMI in some instances can implement copy protection preventing you from recording to another device like a VCR DVD recorder etc, if the cable company or Movie studio invokes the copy protection signal. I haven’t seen that personally happen yet, but heard the option exists.