Python OpenCv: Write text on video

OpenCV is the huge open-source library for computer vision, machine learning, and image processing and now it plays a major role in real-time operation which is very important in today’s systems. By using it, one can process images and videos to identify objects, faces, or even the handwriting of a human.

cv2.putText() method inserts a text on the video frame at the desired position specified by the user. We can style the type of font and also it’s color and thickness.

Syntax : cv2.putText(frame, Text, org, font, color, thickness)

Parameters:
frame: current running frame of the video.
Text: The text string to be inserted.
org: bottom-left corner of the text string
font: the type of font to be used.
color: the colour of the font.
thickness: the thickness of the font

Example:

# Python program to write 
# text on video 
  
  
import cv2 
  
  
cap = cv2.VideoCapture('sample_vid.mp4') 
  
while(True): 
      
    # Capture frames in the video 
    ret, frame = cap.read() 
  
    # describe the type of font 
    # to be used. 
    font = cv2.FONT_HERSHEY_SIMPLEX 
  
    # Use putText() method for 
    # inserting text on video 
    cv2.putText(frame,  
                'TEXT ON VIDEO',  
                (50, 50),  
                font, 1,  
                (0, 255, 255),  
                2,  
                cv2.LINE_4) 
  
    # Display the resulting frame 
    cv2.imshow('video', frame) 
  
    # creating 'q' as the quit  
    # button for the video 
    if cv2.waitKey(1) & 0xFF == ord('q'): 
        break
  
# release the cap object 
cap.release() 
# close all windows 
cv2.destroyAllWindows() 

Output:

python-write-to-video-opencv

My Personal Notes

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