The following shows the decision-making workflow performed to know when to move up and down variants.

1. Check if an upgrade is possible → if they qualify → upgrade
   • Note – if the client is requesting a keyframe then don’t upgrade
2. If the client doesn’t qualify → then we test for trial → if they qualify for trial & are above downgrade of target → attempt upgrade
3. If the client is requesting a keyframe or has dropped frames → downgrade
4. Otherwise downgrade based on calculation

These checks are run each keyframe received or per the mbr.test.delay setting in red5pro/conf/webrtc-plugin.properties file.