The 55PUT6101/60 has a greater number of video formats than most comparable spec TVs that are a similar age to it. This Philips TV supports an MKV video formats supported, which is the most commonly supported video formats supported supported by 4K and 8K TVs that came out around the same time as the 55PUT6101/60. The video formats supporteds "AVC", "AVI", "H.264", "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.