The Android YouTube app on my phone won't play any video with the vp09.00.51.08.01.01.01.01 codec, which seems to be every main stream, popular video.
My Android YouTube app will play videos with avc1.4d401e (134), which tend to be obscure low view videos. The only way I know how to check the codec is to look up the video from a desktop browser, right click the video and click "stats for nerds".
There are no errors shown in the app. The screen simply shows black and the audio plays normal.
YouTube works fine in the phone's browser, but not the app. I've uninstalled, reinstalled, cleared the cache, restarted the phone, and several combinations of all the above and can't get my YouTube app to work right.
Is there a way to update the codecs, or some other insight how to resolve the problem?
The phone is a Korean model LG v20 F800L, so what Hax0 says makes perfect sense. I'm testing his answer now.