The number of video formats supported by the Philips 40PFT4509/60 is more than most TVs of a comparable age and spec to it. This television supports an MKV video formats supported, which is the most frequently supported video formats supported supported by similar spec televisions that have been on the market for around the same time as the 40PFT4509/60. 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.