This template shows up to 30 YouTube videos in a gallery that automatically adjusts the amount shown on each line.
Example
{{Video gallery
|video1 = UYFcIN3LXM0
|video2 = gkSjoy3BJGw
|video3 = Pi2Dhy4cNqk
|video4 = fxoJmNm_4sg
|video5 = wUe4RMlplrc
|video6 = 95Qo_6HbSwE
}}
produces
{{Video gallery
|videohd=yes
|video1 = vikaCt9eJ80
|video2 = IFnObI0M0Kw
}}
produces