So I am burning a video clip with audio attached from IDVD in European format (PAL). The size of the project is about 6 GB and I am using a double layer DVD with 8.5 GB and is a DVD+R. IDVD finishes burning and pops the disc out of the drive but when I go to play it on a European DVD player it does not play, but will play on my computer. What is going on?