Have got used to most things 'Pi' but don't understand why I can get page such as youtube to load and show main and side bar screens but actual 'play' area remains black and says a 'plug-in' missing so won't run.
Please help out an OAP with no computer back ground. (using R-Pi B+2)

hi from G6NLZ in LYDD.
didn't know of the talk but am looking for a prog like mmsstv for my PiB+2 (I am running fldigi multi channel ok ) but can't find a sstv prog, anybody help please, Mac.