Weeks ago I had a similar problem albeit a variation on the same theme.
I used a program called youtbe down loader to save some old songs which worked fine for a long time, BUT the last one I tried brought along a little problem which sounds like your's.
I had not used Adawre for the longest time so I installed it, ran it and low and behold for tons of little bits of horror.
What did I expect from a FREE down load site? Big Dummy!
So I ran Adaware, along with my Malware bites, Ccleaner, etc and LOW, all gone.
I also wiped any other traces of these types of recordings and any short videos just to make sure.
You always get what you pay for, and pay for what you get for free.