Video file recorded by Windows Media Center, a program used to play multimedia content and record TV shows; encodes video using MPEG-2 compression and audio using MPEG-1 Layer II or Dolby Digital AC-3 compression; may also include descriptive metadata and digital rights management (DRM) information. The WTV Windows Media Center video format is successor of the DVR-MS Windows Media Center video format and was introduced in Windows 7
Is a format for flash animation, graphics, audio and video. Its main purpose - to work on the Internet. Images in SWF format scaled to any size without loss of quality and video is small in size and loads quickly.