The Panasonic TX-L50E6 has a greater number of video formats than most televisions of a similar age and type to it. This Panasonic TV supports an AVI video format, which is the most frequently supported video format supported by similar spec TVs that came out around the same time as the TX-L50E6. The video formats "FLV", "MKV", "MP4", "TS", "VOB" and "WMV" are also supported by this TV.
MP4 stands for Moving Pictures Expert Group 4.
WMV stands for Windows Media Video.
AVI stands for Audio Video Interleave.