so i am not affiliate so my videos do not last forever

what is the best way to submit a run?

just link to the video of stream it happened in?

do i have to download the video and edit it so its just that specific section that contains only that run i want to submit?

any advice would be great thanks

For a stream, you need to make a highlight so it isn't deleted. You can submit a link to something w/ a timestamp if it's an unedited youtube video. I'll add a quick section to the FAQ thread: https://www.speedrun.com/speedrunning/thread/pt010

Added it to the FAQ thread, check out section 22 https://www.speedrun.com/speedrunning/thread/pt010/1#s77sn