I have 4 plots/schematics. They are either created with ArrayPlot[], ParametricPlot3D[] or Graphics[]. As I play with calculation resolutions their absolute sizes will change. I would like a neat way to arrange them inside a YouTube sized box (1920 x 1080) using relative positioning so that when/if they change size the final combination still looks more or less how I want.
To simplify the question let's say I have:
videoBox = Graphics[{EdgeForm[Thick], White, Rectangle[{0, 0}, {1920,1080}]}]; plot1 = Graphics[{Blue, Rectangle[{0, 0}, {2, 3}]}]; plot2 = Graphics[{Red, Disk[{0, 0}, 2]}]; plot3 = Graphics[{Orange, Disk[{0, 0}, 2]}]; plot4 = Graphics[{Gray, Rectangle[{0, 0}, {2, 1}]}]; GraphicsRow[{videoBox, plot1, plot2, plot3, plot4}] 
Using relative positioning I would like to combine them to look something like:

Any suggestions?
Update 1
The answers and suggestions have certainly helped, but I still need more control over the positioning. For example here is the actual image I have created using the suggestions so far:

Close but no cigar. I would like to move the blue and red dots schematic up so that the bottom lines up with the bottom of the rectangular box plot.

GraphicsGridcomes to mind... $\endgroup$GraphicsGrid[{ {plot1, plot3, plot2}, {SpanFromAbove, videoBox, plot4}}]but I'd useInsetprobably $\endgroup$