I know that Loopy doesn't do DSi or plan on it, but I found this video on DSi capture that was found earlier this year by a group called Lost Nintendo History. Thought some people here would be interested in this recent mod and just see how it works, or maybe you want to try it out yourself. It's not HDMI and doesn't look pretty. but still cool that there is a new way to output video on a DSi.
https://www.youtube.com/watch?v=F4n9oYBFiMI&t=1s
If you want to check out the mod yourself:
https://lostnintendohistory.github.io/DS-TV-OUT
New DSi Video Output
Re: New DSi Video Output
Its cool (its for DS Lite, not DSi) but pretty limited. Only outputs composite (meh quality) and requires a dedicated capture card to use for recording. It only captures one screen, but honestly that's not a huge problem. It does however, have large potential for improvement. The fact that its using a DAC as the signal is digital at first makes me believe its possible to send that signal over USB and have software running on a pc to handle it? Talked to evo about it like a week or two ago, can't remember exactly what he said but I know he's been working on improvements to this mod.
Re: New DSi Video Output
Oops, that's my bad. There are four versions of just the DS model so I got my thoughts confused, lol.