Youplay | For Youtube

It can be triggered directly by your video mixer via LAN or IP.

You can record a live segment and simultaneously play it back on another channel—perfect for instant replays or highlight clips during a long stream. YouPlay for Youtube

It supports nearly all video formats (MPEG-4, Apple ProRes, DNxHD, etc.) without needing time-consuming transcoding. It can be triggered directly by your video

While YouPlay isn't a "YouTube-only" app, it is a staple for professional YouTube creators who use hardware mixers (like the Blackmagic ATEM). YouPlay for Youtube

See how YouPlay manages live production and multi-channel playback in these technical walkthroughs:

Users can crop, zoom, or change aspect ratios (like fixing vertical phone videos for a horizontal broadcast) in real-time.