Last week, US intelligence experts said technical analysis of another audio tape aired on the al-Jazeera satellite TV network showed "almost certainly" that it came from Bin Laden.
While the online workshops organized by the Berkley Center helped her structure the video, tackling technical problems like matching audio clips with powerpoints were still challenging tasks.
UNESCO, in collaboration with the Public Service Broadcasting Trust (PSBT), created a series of instructional how to videos to provide basic, conceptual and technical understanding of the audio-visual film production, with the special focus on the independent documentary.