The number of video formats supported by the 55PFS6409 is more than most comparable spec televisions that have been on the market for a similar time to it. The most commonly supported video format is MPEG1, but this video format is not supported by this TV. The video formats AVC|AVI|H.264|MKV|MPEG1|MPEG2|MPEG4|VC-1|WMV9 are also supported by this Philips TV.
AVI stands for Audio Video Interleave.
WMV stands for Windows Media Video.