As long as the video is in dvr-ms format, you can import and edit the TV series material in Windows Movie Maker.
The step is Publishing (or Finish the Movie in the 2.1 version).
First you have to Publish/Finish the movie in Windows Movie Maker. Once that is done (and you've created a wmv file) you can burn it to DVD using your DVD Maker.
Someone at Microsoft.
These are the only formats compatible with Windows Movie Maker:.asf, .avi, dvr-ms, .m1v, .mp2, .mp2v, .mpe, .mpeg, .mpg, .mpv2, .wm, .wmv
Video formats compatible with Windows Movie Maker:.asf, .avi, dvr-ms, .m1v, .mp2, .mp2v, .mpe, .mpeg, .mpg, .mpv2, .wm, .wmv
Video files compatible with Windows Movie Maker include:asf, .avi, dvr-ms, .m1v, .mp2, .mp2v, .mpe, .mpeg, .mpg, .mpv2, .wm, .wmv
TV episodes downloaded through iTunes can be imported into Windows Movie Maker as long as they are not protected by DRM (Digital Rights Management) and contain a .dvr-ms file name extension.
The Merlin clips have to be in a format compatible with Windows Movie Maker:.asf, .avi, dvr-ms, m1v, .mp2, .mp2v, .mpe, .mpeg, .mpg, .mpv2, .wm, .wmv
As long as the video is in a format compatible with Windows Movie Maker:.asf, .avi, dvr-ms, .m1v, .mp2, .mp2v, .mpe, .mpeg, .mpg, .mpv2, .wm, .wmv
The movie has to be converted to one of the file name extensions (formats) listed below before it can be imported into Windows Movie Maker:.asf, .avi, dvr-ms, .m1v, .mp2, .mp2v, .mpe, .mpeg, .mpg, .mpv2, .wm, and .wmv
Movie clips must be IMPORTED into the Windows Movie Maker program. And too, the clips must be in a format compatible with the program:.asf, .avi, dvr-ms, .m1v, .mp2, .mp2v, .mpe, .mpeg, .mpg, .mpv2, .wm, .wmv