YC Waveform: -
The YC Waveform graph in Premiere Pro gives us a graphical display of the Luminance (brightness) and Chrominance (color) of our footage and is an essential tool for correcting and improving the look of our image by giving us empirical data about the changes we make rather than just relying on our eyes.
VectorScope: -
A specialised oscilloscope used to display the color information in a video signal. In particular, a vectorscope decodes the color information into R - Y & B - Y. Those signals are used to drive the x and y axis of the scope. Total lack of color in a video signal is displayed as a dot in the center of the vectorscope display. The angle, distance around the circle, and magnitude, distance away from the center, indicate the phase and amplitude of the color signal.
RGB Parade: -
The RGB Parade is a helpful video scope in Premiere Pro for separating out the 3 color channels of digital video: red, green and blue. In this post we explore how to use the RGB Parade to improve your video edits.
A specialised oscilloscope used to display the color information in a video signal. In particular, a vectorscope decodes the color information into R - Y & B - Y. Those signals are used to drive the x and y axis of the scope. Total lack of color in a video signal is displayed as a dot in the center of the vectorscope display. The angle, distance around the circle, and magnitude, distance away from the center, indicate the phase and amplitude of the color signal. 
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