MediaRecorder api does not contain keyframe for every cluster. i need to detect if cluster has kayframe from clientside. i am trying to live stream 10000+ user with mediarecorder chunks. For now when someone connect to websocket i tell the streamer stop videorecorder and start again. so latency is too low but restarting stream is annoying for user. i tried ffmpeg with on fly encoding, so this works but ffmpeg eats the cpu and cluster sizes are amazing high. I need to detect cluster has keyframe or not ?