Video files are one part of the data you lose, but you also have metadata, such as title, description, etc.
We desperately truly worldwide, encompassing, independent, standardized-so-that-anyone-can-communicatio-to-everyone p2p social networks. Social network providers should have only the role of any service provider, so you can change them on a daily basis with no repercusions, just as you can freely change your tailor, barber, news provider or internet provider.