For movies which contain frame-by-frame metadata it is possible to enable measurement grid and frame information display as shown below:

ScreenshotMode
First mode
Second mode

Third mode.

In this mode you can drag by right mouse button grid controls and move them over the view.

 

Such grid can be enabled/disabled by pressing "Ctrl+Shift+G" on the keyboard or though the "View" menu ("View" -> "Show Grid").

It is also possible to toggle frame information display by pressing "Ctrl+G".