But I don’t get why my TV can’t handle the resolution. It’s a TV, there must be a deinterlacer in it. The DC puts out a 576i signal, just like normal SD TV does. Why can I watch TV in 576i, but not Dreamcast in 576i?
You would think this would be the case, but it isn’t. TVs don’t support all advertised resolutions over all input types. For example, my Samsung LCD from 2009 will actually take and display 240p, but only over component–if I send it 240p over anything else, like composite or HDMI, it tells me the mode isn’t supported.
How are you feeding your TV 576i from TV? I assume not via HDMI?