The number of video formats supported by the Samsung UE40S9 is more than most TVs of a similar age and spec to it. The most commonly supported video format is AVI, but this video format is not supported by this Samsung TV. The video formats 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 television.
MP4 stands for Moving Pictures Expert Group 4.
WMV stands for Windows Media Video.
AVI stands for Audio Video Interleave.