The Samsung UE48J5150 has a greater number of video formats than most mid-size TVs that have been available for a comparable time to it. This TV supports an AVI video formats supported, which is the most frequently supported video formats supported supported by comparable spec televisions that came out around the same time as the UE48J5150. The video formats supporteds "3GP", "ASF", "FLV", "MKV", "MOV", "MP4", "TS" and "VOB" are also supported by this television.
MP4 stands for Moving Pictures Expert Group 4.
AVI stands for Audio Video Interleave.