Is it possible to autoplay a video when using module media_youtube, and perform an action when the video ends?
The module developers hid these options well!


Click on Configuration (or Structure depending on versions)
Click on File Types
For Video, click on manage file display
For the display you are using (Default, Link, Preview, etc..), click on the YouTube Video tab under Display Settings.
Check the box called "Autoplay video on load"