[Spinifex]

Thanks for the reply, I thought the GFX card was the culprit. The strange part is that it works fine if you boot into bootcamp and play the video through Windows. I brought this to the attention of our supplier and they were able to reproduce the problem. They are escalating the issue with Apple Australia so hopefully there will be a driver fix in the near future. Otherwise I will have to get the boss to buy me a nice shiny new ATI card!!!