The Sony KDL-48R510 has a greater number of video formats than most TVs of this age and spec. The most frequently supported video format is MVC, but this video format is not supported by this TV. The video formats AVCHD, AVI, MKV, MPEG1, WEBM and WMV9 are also supported by this Sony television.
WMV stands for Windows Media Video.
AVI stands for Audio Video Interleave.