toUrl : ThumbnailVariant -> Embed.Youtube.Internal.Youtube.Youtube -> Url
Grab a thumbnail from your Youtube video
Player Background Thumbnail (480x360):
PlayerBackground
Video frames thumbnails (120x90)
First | Second | Third
Lowest quality thumbnail (120x90)
LowQuality
Medium quality thumbnail (320x180)
MediumQuality
High quality thumbnail (480x360)
HighQuality
Standard quality thumbnail (640x480)
StandardQuality
Unscaled thumbnail resolution
MaximumQuality