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That's what I do with my Samsung TV. It rewards me by making the sound gradually lose sync with the video. I have to turn the TV off and back on again about once an hour to resync.

I've often wondered what kind of brain dead software failure is responsible for this. The sound+video come from my Humax box via HDMI into the TV. The TV decodes both, shows the video and plays the audio out of the analogue jack on the back. I plug that into my sound bar (because the TV doesn't support Audio Return Channel, despite being quite new). Rebooting the Humax box and the soundbar doesn't help the sync.

My guess is that the thing decoding the HDMI signal feeds sound into the DAC buffer for the audio jack but never checks to see how full that DAC buffer gets. I suspect the DACs reference clock isn't synced to the HDMI data, so clock skew gradually builds. After 2 hours, there is about 1 seconds worth of audio buffered there.

It's the kind of thing that gets overlooked when the software team are forced to write a load of crap smart TV stuff when they should be focusing on the basics.



The people that write the HDMI and DAC firmwares aren't the same people that make the Android apps that the TV software basically is nowadays. Though investing in the latter might mean skimping on the former.




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