The TX-42AS740 has a greater number of video formats than most televisions of a comparable age and spec to it. This TV supports an MKV video formats supported, which is the most commonly supported video formats supported supported by TVs that have been on the market for around the same time as the TX-42AS740. The video formats supporteds "AVI", "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.
AVI stands for Audio Video Interleave.