The number of video formats supported by the TX-39A400 is more than most mid-size TVs that have been available for a comparable time to it. This TV supports an MKV video formats supported, which is the most frequently supported video formats supported supported by mid-size TVs that are a comparable age to the TX-39A400. The video formats supporteds "AVI", "FLV", "MP4", "TS", "VOB" and "WMV" are also supported by this Panasonic TV.
MP4 stands for Moving Pictures Expert Group 4.
WMV stands for Windows Media Video.
AVI stands for Audio Video Interleave.