The TX-39AS500 has a greater number of video formats than most mid-size TVs that have been around for more than two years. This Panasonic television supports an MKV video formats supported, which is the most frequently supported video formats supported supported by TVs of this age and type. The video formats supporteds "3GP", "AVI", "FLV", "M4V", "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.