iMac G5 Mini-DVI Output Resolution

Oops - read my post below.

The output on all iMac G5's is a mini-VGA... not a mini-dvi... make sure you get the mini-vga adapter not the mini-DVI... Thus, the max resolution will be somewhat less. I am not sure exactly what though.

Whoops. Sorry about that, your iSight G5 does only have mini-VGA. This doesn't change matters much, you'll just need to download this program, and make sure that you acquire a mini-VGA ---> VGA adapter.

It will plug into the "RGB" input on your TV. VGA supports up to 2048x1536 resolution, so 1080i is not even a stretch.

Just to make this easier for you, the image on the left is mini-VGA; the image on the right is mini-DVI. Don't get an adapter that looks like the one on the right.

You may also need to end up using a program such as SwitchResX or DisplayConfigX -- sometimes, when you plug your computer in, you will automatically get a resolution that matches your TV exactly. Other times, you will not. These programs both allow you to add custom configurations for resolution / overscan / refresh to try to get the computer to match the TV.

For my 720P TV, I had to use SwitchResX, but I now happily have two display modes that are perfect: 1366x768 (native) and 1024x768 stretched (so that I can do a stretched screen of a 4:3 video).

The programs are not free, but at least with SwitchResX, the ability to create the new profile is free and permanent (but if you keep using other features, you must pay).