Probably too far-fetched, but curious anyway since this would make things a lot easier.
Recently got a modded Switch with a chip and it’s got custom software with this Tinfoil app on it, and I was wondering if it could be possible to somehow stream to Twitch/YouTube directly, without a capture card, using an app that would work only with a modded version of the console.
I wouldn’t be so sure about that. The Switch records a 720p30 video all the time for its 30s replay functionality that is on by default.
At least theoretically, capture and encoding themselves shouldn’t cause any more performance issues than a stock Switch already has (unless you try to stream and have the replay buffer ofc.) and sending a bunch of video data over a network isn’t very intensive.