The 43PUT6101 has a greater number of video formats than most TVs that came out around the same time as it. The most frequently supported video format is H.265, but this video format is not supported by this television. The video formats AVC, AVI, H.264, MKV, MPEG1, MPEG2, MPEG4, VC-1 and WMV9 are also supported by this TV.
WMV stands for Windows Media Video.
AVI stands for Audio Video Interleave.