The current UI on the timeline view in the web client is very cumbersome to move around it.
1) I've currently got 12 cameras running, and I can not see the preview because the sources list takes up too much of the screen.
Consider just putting the Source list in an overflow auto div or something?
2) When I want to change the time I'm viewing, I have to zoom way out then center my cursor over what I'm interested in and zoom back in. This is really difficult to work with if the time I'm interested in is at the left or rightmost edge. I personally don't like using the scroll for zoom, because it's rather surprising to the user, but even if that stayed, the ability to scroll left and right to change your time window is really needed.