The Sony KDL-40R470 has a greater number of video formats than most TVs that have been around for more than two years. This TV supports an MKV video format, which is the most commonly supported video format supported by televisions of this age and type. The video formats "AVCHD", "AVI", "MPEG1", "MPEG2", "WEBM" and "WMV9" are also supported by this television.
WMV stands for Windows Media Video.
AVI stands for Audio Video Interleave.