http://en.wikipedia.org/wiki/List_of_The_Avengers:_Earth%27s_Mightiest_Heroes_episodes
DISCS IN SERIES: 4
SE1...........: 2 discs
After 74 villains break out of prison, Marvel's most powerful superheroes team up to capture all of them, and also to defend the Earth from widespread threats.
EPISODES.......: 52 TOTAL
SIZE...........: DVD9
VIDEO CODEC....: MPEG2
RESOLUTION.....: 720x480
ASPECT RATIO...: NTSC 16:9
FRAMERATE......: 29.97fps
AUDIO .........: English 192kb/s
SUBTITLES......: None
MENU...........: Yes
CHAPTERS.......: Yes
DISC COVER.....: Yes
http://www.imdb.com/title/tt1626038/