Events and CTAs, including Marketo forms, can be added to videos in Vidyard. You may also want these evens to display on content that you push to YouTube.
YouTube is not able to render any events that are applied to videos in Vidyard.
Vidyard is only able to push the video content, which is then re-encoded and available to be used with the YouTube player after processing is complete. Any Events or CTAs have to be created on YouTube's side.