The number of video formats supported by the 55PFS8159 is more than most large TVs that have been available for a similar time to it. This TV supports an AVI video format, which is the most frequently supported video format supported by similar spec TVs that came out around the same time as the 55PFS8159. The video formats "3GP", "AVC", "H.264", "MKV", "MPEG1", "MPEG2", "MPEG4", "VC-1" and "WMV9" are also supported by this Philips television.
WMV stands for Windows Media Video.
AVI stands for Audio Video Interleave.