youtube algorithm change?

Ok so being new here I thought I'd just straight into the deep end here and make you all angry with my post title, but don't be mad there is a point to this all and I can guarantee you'll get some worth out of it. I didn't expect this to be so long but I think what I've written here sums up my...

I had a number of Videos ranking on page one of Google (Still ranks #1 on YouTube) that have disappeared from the SERP, but not all videos have disappeared. It seems as if the latest Google change also affected YouTube Videos, anyone else notice videos disappearing, or limiting only one video to...