By default MS-DVR files are not editable through Windows Movie Maker 2.1. A little tweak that has been around for several years just caught my attention. I don’t know the original source, however, know that I am not. Import the following into the registry and reboot. Windows Registry Editor Version 5.00 [HKEY_CLASSES_ROOT\CLSID\{083863F1-70DE-11d0-BD40-00A0C911CE86}\Instance\{A4F9C3BA-A68F-4942-8152-B783CF89193F}] “CLSID”=”{A4F9C3BA-A68F-4942-8152-B783CF89193F}” “FilterData”=hex:02,00,00,00,00,00,20,00,04,00,00,00,00,00,00,00,30,70,69,33,\ 00,00,00,00,00,00,00,00,01,00,00,00,00,00,00,00,00,00,00,00,30,74,79,33,00,\ 00,00,00,b0,00,00,00,c0,00,00,00,31,70,69,33,00,00,00,00,00,00,00,00,01,00,\ 00,00,00,00,00,00,00,00,00,00,30,74,79,33,00,00,00,00,d0,00,00,00,c0,00,00,\ 00,32,70,69,33,08,00,00,00,00,00,00,00,01,00,00,00,00,00,00,00,00,00,00,00,\ 30,74,79,33,00,00,00,00,b0,00,00,00,c0,00,00,00,33,70,69,33,08,00,00,00,00,\ 00,00,00,01,00,00,00,00,00,00,00,00,00,00,00,30,74,79,33,00,00,00,00,d0,00,\…