There is a tool available for chromecast that works very well, but my ideal solution would be an app I can load onto the shield that auto-mutes during ads and un-mutes when the ads are finished.
If I didn't already have my hands full with side projects, I'd dig into this on my own time.
I'm in the process of releasing a video player with adblocker for live IPTV on android that can definitely auto-mute the whole adbreak for you if you watch the stream in the player (see my previous comment for link).
But if you are suggesting a system-wide mute triggered by a dormant app as another live broadcast plays in some official app then that's easier in some respects and harder in others because people need to trust the data is accurate. Once we have enough users sharing accurate adbreak data (powered by accurate software with human corrections) we can offer a system-wide mute for ads in any other app playing those known broadcasts.
People used to hack on this stuff decades ago. I suspect it's not as common now because for those who care (said hackers) they already cobble together some ad blockers and pi-holes. But ad delivery has stained so much daily life now they've sweetened the pot for a new generation of, not ad blockers, but... video shields?
I might have talked myself into tinkering on this. Curious what tools HN recommends.