Media record API alternative for Safari

I need to record a video from a camera via browser,

I've done it for Chrome and Firefox using Media record API.

var options = {mimeType: 'video/webm; codecs=vp9'};
mediaRecorder = new MediaRecorder(stream, options);

Any alternative way to record a video from Safai browser?

Like a flash library but an open source one which can return the video as a blob object?

Thanks in advance