The Toolbar contains three groups of buttons: frames, video, view, options:
The commands represented by the buttons are (from left to right):
First row
set the video/frame target name and path
Second row:
Video: capture the current signal to the target file (at the selected frame
rate)
Video: capture single frame
Video: capture single frames to AVI
Video: stop video/frame capture
Audio: enable/disable audio capture
Third row
options: enable previewing the capture signal, or enable viewing the source
signal by overlay
Options: frame rate edit field
Options: frame rate value mode: frame per second (fps) or seconds per frame
(spf)
The frame rate is then either measured in frames per second (fps, the number
of frames that are captured each second), or seconds per frame (spf, the number
of seconds between capturing two frames).