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