Couple of fixes

A recent change on the YouTube video data caused the video thumbnail to not work properly. This situation has been corrected.
YouTube is also starting to use a different method for delivering video streams for non-live stream videos. This caused the HFR feature to not work any longer since they were not including the non-HFR streams in their manifest. A recent revisit to this situation allowed me to discover that this is no longer the case, so far, and the HFR feature is now fully working once again with this update.