Livestream Supervision Tools for multiple Youtube Livestream

We are streaming around 400 basketball matches live during a season and have switched back to Youtube for cost reasons. Given that we have amateurs making the recording / streaming of the matches and no supervision center, we need a software tool that checks regularly among the streams that are programmed, that a) the image is not black, b) the image is not blocked and c) there is audio coming through (audio not silent) and notifies one or several email addresses if this is not the case. Please READ THE ATTACHED DOCUMENT CAREFULLY. Only answers taking the 3 steps mentioned in the attached documents into account which qualify for shortlisting; other responses will not be considered.