Video integrated from Youtube Blurry on Mac (but not all of them, and only the 10-ish first seconds...)

I don't know what to offer. The video is coming from YouTube and is embedded in Storyline. There's nothing SL is doing to the video.

My understanding is that YT down samples the video based on the network speed. I would guess that it initially sees a lower speed and down samples, and then the network speed adjusts which in turn changes the video quality that is streaming.

You can contact our support team to see if they have a smarter answer since I'm not a programmer and making broad assumptions, but I assume it's a YT issue and expected behavior based on how the video is being served.