How can my G4 Quicksilver be made to display on my T.V.?

I am using a dual-core G4 Quicksilver with, what i believe is, its original AGP card. I've connected the VGA-to-HDMI and VGA-to-video, and have yet been able to view my desktop on my television.

When i do VGA-to-video, i get a brief glimps of a solid purple screen, which then fades to black. Also, I am not using any adapters.

I am confused because i'm not sure exactly what is wrong. AGP card, lack of digital compatability, (for the HDMI method), or am i using the wrong output?