Open Source Scan Converter (OSSC): A zero-lag upscaler for retro gaming, and currently by far the sharpest way to play analog consoles via HDMI

https://youtu.be/vHqT1God9vk The Open Source Scan Converter is a zero lag upscaler.  At the moment, it is by far the sharpest way to play your analog consoles via HDMI, offering tons of options, 2x 480p (960p) and up to 5x 240p (1080p!).  It's only shortcoming is it's not compatible with all TV's