The F40B3803 has a greater number of video formats than most similar spec TVs that have been around for the last year. This TCL TV supports an AVI video format, which is the most commonly supported video format supported by new TVs. The video formats "MP4", "MPG" and "TS" are also supported by this TV.
MP4 stands for Moving Pictures Expert Group 4.
AVI stands for Audio Video Interleave.