Lightworks is very picky on what video formats to import. EyeFrame Converter can convert most video files to the Lightworks friendly Matrox Mpeg2 I-Frame HD format. If this format is too heavy for your computer, use the convert to proxies option, which will produce low quality clips for a smooth editing process, which later can be swapped with high quality intermediate files for high quality export. More info and download: http://www.lwks.com/index.php?option=com_kunena&func=view&catid=23&id=30817&Itemid=81
Presentation Tutorials is a source of learning how to create and edit videos and slide shows with freeware. Ex. how to convert Power Point presentations to DVD or Blu-Ray or how to author a wedding slide show or memorial slide show for free with DVD slideshow GUI. Or how to convert your footage with EyeFrame Converter into the free professional video editor Lightworks.