If your video is unclear, you may want to change your YouTube settings to a higher resolution. This can be done by clicking the gear in the bottom right corner of your screen.
If you are experiencing restricted access and cannot view the video at all, this is likely due to the settings for the WIFI connection you are using. Many offices have restrictions for sites like YouTube that limit the video playback. This means you may need to switch WIFI connections in order to watch the session live.