The Panasonic TX-48AS640 has a greater number of video formats than most mid-size TVs that were released more than two years ago. This Panasonic TV supports an MKV video formats supported, which is the most frequently supported video formats supported supported by similar spec televisions that were released more than two years ago. The video formats supporteds "AVCHD", "FLV", "M4V", "MP4", "TS", "VOB" and "WMV" are also supported by this television.
MP4 stands for Moving Pictures Expert Group 4.
WMV stands for Windows Media Video.