The 43PUS6101 has a greater number of video formats than most similar spec TVs that came out around the same time as it. The most commonly supported video format is H.265, but this video format is not supported by this TV. The video formats AVC, AVI, H.264, MKV, MPEG1, MPEG2, MPEG4, VC-1 and WMV9 are also supported by this television.
WMV stands for Windows Media Video.
AVI stands for Audio Video Interleave.