1. For video, look at Camtasia.
2. For audio, look at Audacity.
3. If the video is without sound, use Virtual Dub to splice in the audio you captured with Audacity.

-> This recipe is widely known about so I share it with you so you won't be wasting untold hours in meetings trying to implement a dead on arrival idea.

If you want secure viewing, then never release it over the internet.

Bob