Despite all its convenience methods, at its core MediaTime is a rather trivial class with only integral members. Despite this, since it had a destructor declared, this made the class non-trivially destructible even if the implementation was empty, and therefore clang did not allow to use it for static variables unless done in form of a pointer. By removing the destructor this restriction is lifted and we don't need heap allocations for static MediaTime objects. Previous usages of heap allocation for static MediaTime objects have been rewritten to take advantage of this. Test coverage is provided by successful compilation without [-Werror,-Wexit-time-destructors] errors and existing tests.