All screencasts were made using GNOME shell screen recording tool built into the desktop. The Shell screencasting tool can be turned on or off using the key combination Control+Shift+Alt+R. All videos are recorded in WebM and uploaded to youtube. The files get saved in /home/<profileName>/Videos folder by default.
Note:-Watch videos in HD mode as video is horribly distorted in lower resolutions in youtube where they are hosted.