A combination of windows movie maker, sony vegas pro 14 and Xmedia recode were used to make these webms.
Windows movie maker - Used to cut the portions of the source file I need.
Sony vegas pro 14 - Used to combine the pieces of video together.
Xmedia recode - used to convert the video to webm file type
I'm not tech savvy at all. The method I used to create these is probably more complicated than it has to be.