I think it's more like an obs kinda thing. I haven't really used the video feature much myself. 
nostr:nprofile1qqsrx6ws5a3s3ys3l8zllwv3d4yen393kmkp4eg4l3akxxrlavpqw4cppemhxue69uhkummn9ekx7mp0qy2hwumn8ghj7un9d3shjtnyv9kh2uewd9hj7qghwaehxw309aex2mrp0yhxummnw3ezucnpdejz7plgmrg  and nostr:nprofile1qqsq08tj00hrmqz7y36csc02f5pgktn2x7q9lrd5t0uqgkleqqyev5qpzemhxue69uhhyetvv9ujuvrcvd5xzapwvdhk6qg6waehxw309akkjmrhv96kk6t99ehx7um5wgcjucm0d5q3zamnwvaz7tmwdaehgunfdshxxctdzyhr4s may actually know more about using it to stream. But I'm also willing to bet Bitkarrot would be able to answer all of those questions since she built it. But I can't seem to tag her on amethyst.