I made a whole bunch of San Andreas machinima on SAMP, but most of them were pretty boring with rubbish music over a lengthy video and text (usually too much of it). Only one was structured correctly with voice actors and all, and in that one the story didn't really make sense.
My lesson from all this: If you're going to make a video without any talking or sound effects, keep it short.
I made a couple I'm proud of, sadly they both have only hundreds of views, whereas the ones I think aren't so good got thousands. I would of made more, but Windows 7 broke my camtool so thats that.