Change FFMPEG command to encode files to be streamed to Youtube

I have a ffmpeg script to stream all files in a folder to YouTube. It uses conversion, and with it a lot of CPU. I have tried to stream files directly without the conversion, however the YouTube complains about unsupported file format, even if the video is downloaded from YouTube studio. Preferred resolution for the new command is full HD instead of current 720p I would like to have script changed so it saves stream into file instead if streaming directly to YouTube . Once file is saved, I would like to stream it to YouTube without conversion - without YouTube re-compressing it on the fly. The server is running Ubuntu 20.04. You can see the current scripts attached. Two milestones: 1) $50 upfront 2) First milestone - saving the stream to file on the disk in the same format as the current stream - $100 3) Second milestone - Streaming to Youtube without encoding, full HD format - $100