Recent Issue: Silent playback of some videos

[Ryster]

Over the past week or two I’ve seen (or more accurately heard) an issue with TV episode playback on my Plex App on my Xbox One X. I’m enrolled in the Insider Programme in the Alpha ring, so I suspect something has changed somewhere as videos that played fine a couple of weeks ago are now playing silently.

Xbox One is hooked up to my TV using an HDMI cable and outputting at UHD resolution with HDR enabled. TV audio is set to Bitstream (though I have tried changing it to PCM, which did fix it for some videos but not all). The sound effects when navigating around the Plex app are playing fine, as is audio from other video apps like Netflix and Amazon, as well as games.

PMS Version: 1.13.3.5223
Xbox OS Version: 10.0.17134.4056
Xbox Audio Setting: Stereo Uncompressed (though have tried Bitstream, with the DTS surround option too, with no effect)
TV: Samsung UE48JU6500

Example snippet to be added shortly.

Edit: https://1drv.ms/u/s!AgPG9cL41iZGqMMMYNkhPGEw8kWoOA

I am suspecting that a recent Alpha Ring build might be the culprit here, so I’m hoping this is seen as an opportunity to look into this issue before this build hits the general public, rather than a “sorry, we don’t support beta OSs”

[jmckee]

We have seen reports of this as well ranging from Games to Apps.

I saw one user posted that disabling automatic refresh rate switching helped. Is this something you have tried?

Because the amount of different users we have seen reports for this, it’s hard to narrow down a specific cause, but currently the refresh rate switching is the most common factor we have seen.

[Ryster]

Well thanks ALOT for that!

I’d already tried changing encoding modes, dropping quality to force transcode, etc, but it made no different. As soon as I turned off the display mode switching thing though, instant fix!

I can now watch my videos again and I’ve noticed no difference is functionality. I guess this mode, whatever it is and is supposed to do, needs some work.