Why doesn't FlashPlayer play all videos?

Question

linux

I sometimes watch films on MEGOGO,
some reproduce normally
and some do not. for example
megogo.net/ru/view/2619691-v-poiskah-dori.html
wrote to them in support, they say that this is somehow connected with the license
, those films that do not have a license for android cannot be played on Linux
while the player is loaded normally, the stream is loaded into the buffer, but the player stops at 4-5 seconds and
the same movie on the virtual machine with Windows goes ok
tried to change the user agent in the browser, it didn’t help
, maybe there are some other considerations on how to achieve playback