The KDL-70W850 has a greater number of video formats than most TVs of this spec and age. The most commonly supported video format is MPEG4, but this video format is not supported by this TV. The video formats AVCHD, AVI, MKV, MOV, MP4, MPEG1, MPEG2, WEBM and WMV are also supported by this Sony TV.
MP4 stands for Moving Pictures Expert Group 4.
WMV stands for Windows Media Video.
AVI stands for Audio Video Interleave.