How to test VIDEO hosting

onebigindian

If i have a VIDEO file on a server that I'd like to test out the hosting for, ie. how many clients can connect to it and see the video seamlessly, without skipping, in the Real World, how do I do that? I'd like to simulate multiple people, connecting from different clients, and I'd like to test whether enough data is being hammered out/sec. , so that the video won't skip. I'm guessing "ab" won't be enough for this?

Thanks.