The number of video formats supported by the 40M2100 is more than most similar spec TVs that have been around for a comparable time to it. The most commonly supported video format is AVI, but this video format is not supported by this TV. The video formats ASF|AVI|DAT|FLV|MKV|MP4|MPEG|MPG|RM|RMVB|TP|TRP|TS|VOB|WMV are also supported by this television.
AVI stands for Audio Video Interleave.
MP4 stands for Moving Pictures Expert Group 4.
WMV stands for Windows Media Video.