Hi,

I have (I believe) the same problem watching YouTube videos, not specific ones, just all of them generally. After some time the audio gets ahead of the video bit by bit. The delay grows slowly over time, so I don't really notice as it's happening until the audio is seconds ahead of the video.

Version: 44.0.2510.1449 (PGO)
Update stream: Stable
System: Windows 10 64-bit
Extensions: LastPass, uBlock Origin (disabled for YouTube)

Over the next few days I'll try disabling antivirus, vpn, extensions etc. to test if something specific is causing it and update with results.

leocg, thanks you so much for taking your time to look into solutions.

I hadn't made the effort to try other browsers, as it mysteriously coincided with me updating opera. It had been working fine, and then as soon as I restarted opera after the update, it stopped.

I just downloaded Chrome and tried that, as you pointed out it has the same issue, so it appears it isn't specific to the Opera update.

My apologies for the rookie error in my troubleshooting, sorry for the hassle!

Hi Everyone,

After the latest update to v45, I've been having issues with YouTube's dark mode. I'm not sure if this is an issue with the browser or not, but it seems to have only happened since the update so I figure worth asking about anyway. When I access YouTube, it seems to default to YouTube's normal (light) mode, even though the toggle may be set to Dark Mode On. If I change the toggle, it will switch to the other mode regardless of what the toggle label says. I feel like this is very confusing to try to explain, so here are some images:

This is what YouTube should look like in it's Normal (Light) Mode, and you can see the toggle is off:

This is what YouTube should look like in Dark Mode, and we can see that the toggle is on:

Once I have turned Dark Mode on, if I close and re-open the tab, YouTube reverts back to light mode, even though it shows Dark Mode is still on:

If I toggle YouTube's Dark mode OFF, it switches over to Dark Mode:

I tried clearing browsing history, cookies, etc. but still no luck. My apologies if this isn't a browser issue, but as I mentioned it coincided with the update so I'm making assumptions. Thanks for your time.

Version: 45.0.2552.635 (PGO) - Opera is up to date
Update stream: Stable
System: Windows 10 64-bit

After trying a few different things, I found that Enabling the option "Enable MFDemuxer on Windows" on the opera://flags page appears to have solved the problem for me. Did not have to disable any extensions or external VPN/Antivirus software.

Hi,

I have (I believe) the same problem watching YouTube videos, not specific ones, just all of them generally. After some time the audio gets ahead of the video bit by bit. The delay grows slowly over time, so I don't really notice as it's happening until the audio is seconds ahead of the video.

Version: 44.0.2510.1449 (PGO)
Update stream: Stable
System: Windows 10 64-bit
Extensions: LastPass, uBlock Origin (disabled for YouTube)

Over the next few days I'll try disabling antivirus, vpn, extensions etc. to test if something specific is causing it and update with results.