1790 Valve Texture Format Model The Valve Texture Format is used by the Valve Corporation's Source engine to represent textures in models and environments. 1 Digital Preservation Department / The National Archives 06 Feb 2017 06 Feb 2017 fmt/985 PUID image/vnd.valve.source.texture MIME vtf File extension 1347 Valve Texture Format little endian .FTV 1 Absolute from BOF 0 0 00465456 1348 Valve Texture Format big endian VTF. 1 Absolute from BOF 0 0 56544600