The 55PFS7509 has a greater number of video formats than most televisions of this age and type. This TV supports an AVI video formats supported, which is the most frequently supported video formats supported supported by large TVs that have been available for a comparable time to the 55PFS7509. The video formats supporteds "AVC", "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.