The number of video formats supported by the TX-L55DT65 is more than most TVs of this spec and age. This television supports an AVI video format, which is the most commonly supported video format supported by large TVs that came out around the same time as the TX-L55DT65. The video formats "3GP", "AVCHD", "FLV", "H.264", "M4V", "MKV", "MP4", "MPEG4", "TS", "VOB" and "WMV" are also supported by this TV.
MP4 stands for Moving Pictures Expert Group 4.
WMV stands for Windows Media Video.
AVI stands for Audio Video Interleave.