[BUG]: Some videos not starting or hanging while playing

[aalles1]

Checklist

• I made sure that there are no existing issues - open or closed - which I could contribute my information to.
• I have read the FAQ and my problem isn't listed.
• I have taken the time to fill in all the required details. I understand that the bug report will be dismissed otherwise.
• This issue contains only one bug.

Affected version

SmartTube beta 30.68 & SmartTube 30.68

Device Type

Smart TV/Box

Affected Android

Fire OS 7.6.8.8

Steps to reproduce the bug

https://www.youtube.com/watch?v=nw-qhnc-480

Actual behavior

Recently some videos will not start (e.g. link above), other start but then hang indefinitely,
Running Intra with DNS 1.1.1,1

Additional information

Amazon Fire TV Cube (2nd Gen)

[aalles1]

Might be similar to #5168

[aalles1]

Link above started working when DNS changed to 9.9.9.9 - may be coincidental.

[ottelo9]

Changed from 1.1.1.1 to 9.9.9.9 without success

[ZRabbits]

same is happening to mine on all devices (Nvidia Shield, Google Chromecast TV)

[jon-daemon]

I have the same issue. A lot of videos don't start.
For example v=DsWTz8NrXOY is not starting
while v=EyR2-C9ggi0 is starting

[ottelo9]

I think YT is doing lot of work now to stop this. It had to happen sooner or later.

[strangel3t]

I've seen that happening when I enable subtitles in languages it can't obtain. Turn subtitles off and try to load the same video again.

[aalles1]

I only use English subtitles, but problems occurred with videos with no subtitles.

[jon-daemon]

Any news on that? I checked again the video I reported above that wasn't starting and now it starts. Other random videos are not starting. Also I checked the video from the first post and it's also not starting for me.
I use a fire tv stick.

[yuliskov]

Duplicate of #5296