It is specifically designed to handle many of the video codecs, and in reality can work with nearly any file document, image, or video ... though for some codecs it doth have limitations. That said, it's not designed as directly for video use as it perhaps could be.
I once used it's predecessor, IdImager. For stills, of course, and communicated with the creator of it quite a bit. Then he got bought out and IdImager was deadi-fied by new owners, who wanted a more user-friendly consumer-grade app. Which got howls from the user-base of IdImager ... wow. Over time, he's brought back most of the functions of IdImager into PhotoSupreme, and some new wrinkles also. Maybe I'll do a trial run with it this spring ... see what it can do with video. I do believe it does off-line management also.
Neil