This depends on the jurisdiction also. The concept of ‘Fair use’ does not exist in European copyright law, which makes any sampling without permission a potential copyright infringement.
The test for infringement in Europe requires that a "substantial" part be copied however.
Such samples [as in the OP video] IMO aren't substantial but I think the contrary point can be argued well as "if it's not substantial why copy it / it must be substantial to warrant reuse (with or without modification)"?
