This was a show in a record store, presumably the day of the March 1994 show in Atlanta. (Beck says "we'll be rocking later!" at the end.) Also presumably, he was promoting Mellow Gold which was released around then. But you know, who cares about that? Beck didn't play any songs from it, "Loser" or otherwise. In fact, he didn't play anything remotely familiar to anyone. They jammed some bluesy punk rock, stomped some cardboard boxes, and added a cover of a That Dog song.
The show surfaced in 2009, when the record store put the video up on its website. A beautiful thing! This is an exciting show to watch.