The number of video formats supported by the Toshiba 50L2556 is more than most TVs of a similar spec and age to it. This TV supports an AVI video format, which is the most commonly supported video format supported by comparable spec TVs that have been available for around the same time as the 50L2556. The video formats "3GP", "FLV", "M-JPEG", "M2TS", "M4V", "MKV", "MP4", "MPEG", "MPG", "VOB" and "XVID" are also supported by this television.
MP4 stands for Moving Pictures Expert Group 4.
AVI stands for Audio Video Interleave.