The Philips 40PFL5537T/60 has a greater number of video formats than most TVs of a comparable age and spec to it. This television supports an MKV video formats supported, which is the most commonly supported video formats supported supported by comparable spec TVs that are a similar age to the 40PFL5537T/60. The video formats supporteds "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.