I recorded the Feb 28th episode of "Shark Tank" on my Xfinity px001anm DVR STB. I tried to watch the program in another room using an pr150bnm STB this evening. I noticed that there was a voice-over describing what was happening on the screen; things like, "Two women enter and one of them is holding the hand of a little girl in purple pajamas" and "Sharks circling overhead". The TV is hooked up using composite video and stereo audio. I checked the same program on the TV hooked up to the DVR and it did not have the extra audio.
An on-line search resulted in finding out that Shark Tank is using Video Descriptions on the Secondary Audio Channel (http://www.comcast.com/videodescription). I can't seem to find an option to turn it off in my device settings. The Audio Settings menu shows English as being checked and other foreign languages unchecked. The only other audio choice I could find was Surround / Stereo and Stereo is selected.
A call to tech support resulted in the person not being able to find a solution and escalating the issue with a promise of a call back within 24 hours.
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