I found some videos on youtube. The first is a rap video by Marseille group IAM, one of their most famous exports. The video was shot entirely in Marseille, but it's quite long and probably a bit boring if you don't understand the language, but amongst rap videos it's one of the better ones.
The next is a video about urban projects. Note that most of these images are NOT what Marseille looks like, but what some want it to look like. Still nice, and if you imagine have these buildings in ruins and with loads of rubbish, you get the idea.