The Samsung UE40S9 has a greater number of video formats than most comparable spec TVs that have been around for a similar time to it. The most commonly supported video formats supported is AVI, but this video formats supported is not supported by this TV. The video formats supporteds 3GP,ASF,AVI,DIVX,FLV,H.263,H.264,H.265,M-JPEG,M2TS,MKV,MOV,MP4,MPEG,MPEG1,MPEG2,MPEG4-SP,MPG,MTS,MVC,RMVB,RV,SVI,TP,TRP,TS,VC-1,VOB,VP6,VP8,VRO,WEBM,WMV are also supported by this Samsung TV.
MP4 stands for Moving Pictures Expert Group 4.
WMV stands for Windows Media Video.
AVI stands for Audio Video Interleave.