Mozilla/5.0 (iPhone; CPU iPhone OS 12_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148
I'm on Desktop and use Basilisk browser. I use the mobile domain because it loads so much quicker akin to their old layout. When an in player advert loads it seems to be stopping your VT script.
Also only the progressive video options are available on mobile. Unsure if that's supposed to be intended. Maybe it's due to the spoofing.
EDIT:Stopping was crappy English. The script doesn't load at all.
You mean if a video has ads the script doesn't load? If there are no ads it loads?
The script gets the same videos for both desktop and mobile. If you don't see the adaptive streams it means they are not available for mobile or the user-agent.
It doesn't happen all the time.
Sometimes script will load first time and other times it won't. If I refresh the page then it loads. I believe it's because of advert(s) interfering but I can't confirm.
There is no mobile ua that supports adaptive? I'd pick the most current broadly supported to spoof but it's rather difficult to find them. I did have a good source once but lost the link on a failure. That's not imperative but it'd be neat to have the script load first time.
Can you try with the same user-agent in Chromium/Firefox?
Not really in my situation.
I had a look around and I found this which sounds like my issue.