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by bb88 750 days ago
Black screen detection and audio cues are often used to detect commercials. With sports it should be even easier, since ads don't look like the field or court the athletes play on.

Personally I think it might also be easier to convert the audio to your own close captions in more real time and higher quality ( and better than what the broadcast typically gives you) and leave the sound on low. I like the crowd noise and the announcers, but I also like my sanity more.