it\'s possible to burn dvd-9 to dvd-5 on computer, it just take out information from the video MPEG-2 codec to make it fit on DVD-5. Which means, the picture will looks like higher compression because of it.
Kinda like compress something that\'s already compress, but that\'s not it. ITs just take out extra video bits, say a video with 8 mbits running per second will be taken out to 4 mbits....
But things are starting to get better as dual layers are starting to come up.