The TX-42AS520 has a greater number of video formats than most similar spec televisions that have been around for more than a year. This TV supports an AVI video format, which is the most commonly supported video format supported by TVs of this age and spec. The video formats "3GP", "FLV", "M4V", "MKV", "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.