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Frame Rate Display

Calculate and display video frame rate

  • Library:
  • Computer Vision Toolbox / Sinks

  • Frame Rate Display block


The Frame Rate Display block calculates and displays the average update rate of an input signal. For an input video signal, this block displays the video frame rate of the simulation. The calculated rate is in relation to the wall clock time. For example, if the model is updating the input signal 30 times for every second, this block displays 30 on the block mask.

This block supports images and video frames as input. Inputs can contain intensity or color values.



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Input data, specified as an M-by-N matrix, M-by-N-by-T array, or M-by-N-by-C-by-T array. T is the number of frames in a video or image sequence, and C is the number of color channels.

Data Types: single | double | int8 | int16 | int32 | uint8 | uint16 | uint32 | Boolean | fixed point


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Specify this parameter to control how often the block updates the display. The block displays the average update rate across the specified number of video frames. For example, if this parameter is set to 10, the Frame Rate Display block calculates the elapsed time to pass 10 video frames to the block, divides the elapsed time by 10, and displays the average video frame rate.


If the input port of Frame Rate Display block is not connected to a signal, the block displays the base (fastest) rate of the Simulink® model.

Block Characteristics

Data Types

Boolean | double | fixed point | integer | single

Multidimensional Signals


Variable-Size Signals


Version History

Introduced before R2006a