The 55PUK4900/12 has a greater number of video formats than most similar spec TVs that are a comparable age to it. This TV supports an AVI video formats supported, which is the most commonly supported video formats supported supported by TVs of this age and type. The video formats supporteds "AVC", "H.264", "MKV", "MPEG4", "VC-1" and "WMV9" are also supported by this television.
WMV stands for Windows Media Video.
AVI stands for Audio Video Interleave.