Just collating some tools for the above purpose, I hope to help an academic here create an online authoring/mashup tool of pre-rendered videos, audio-video interviews and images so that an audience particularly children can create their own narratives and presentations using the online multimedia archive (yet to be uploaded).
- http://popcornjs.org/ OR http://www.webmonkey.com/2012/11/mozillas-popcorn-maker-brings-video-remixing-to-the-masses/
https://www.wevideo.com/ for mobile
- http://mashable.com/2007/05/31/gotuit-powervideo-suite/#6549jF41cEqr Gotuit Launches the PowerVideo Suite
Other video remixers