Create a Screen Recorder Using Python

Create a Screen Recorder Using Python With Source Code

Introduction :

In this article, we are going to see how to create a Screen Recorder using Python. Python is a widely used general-purpose language. It allows for performing a variety of tasks. One of them can be recording a video. It provides a module named pyautogui which can be used for the same. This module along with NumPy and OpenCV provides a way to manipulate and save the images (screenshot in this case) . Screen Recorder is a tool that captures everything displayed on your computer screen and save it as a video or MP4 File . This is useful for making tutorials , recording gameplays , or capturing the screen activity . The pyautogui , a Python Library handles the task of taking screenshots and capturing the live content of your screen . OpenCV , A Powerful Python library is used for image and video

processing . Pillow (PIL) , It is also a python library is used to handle necessary image processing like resizing them or converting image formats , etc .

Required Modules Or Packages :-

1. Numpy : – It is a core library for numerical computation in python and it can handle large arrays of numbers. To install Numpy type the following command in the terminal :-


pip install numpy

2. Pyautogui : This python library is used to handle the tasks of taking screenshots and capturing the live content of your screen . To install pyautogui type the following command in the terminal :-


pip install pyautogui

3. OpenCV : This is a powerful computer vision library that provides tools for image and video processing . To install OpenCV type the following command in the terminal :-


pip install pyautogui

How To Run The Code :-

Step 1 . First , You Download and Install Visual Studio Code or VS Code In your PC or Laptop by VS Code Official Website .
Step 2 . Now Open CMD And Run As Administrator and install the above packages using pip .
Step 3 . Now Open Visual Studio Code .
Step 4. Now Make The file named main.py .
Step 5 . Now Copy And Paste The Code From the Link Given Below
Step 6 . After pasting The code , Save This & Click On Run Button .
Step 7 . Now You will See The Output .

Code Explanation :-

This Python code makes the Screen Recorder . Ensures that You Have Downloaded the modules given above using pip .

Imports :

• Numpy : – It is a core library for numerical computation in python and it can handle large arrays of numbers.
• Pyautogui : This python library is used to handle the tasks of taking screenshots and capturing the live content of your screen .
• OpenCV : This is a powerful computer vision library that provides tools for image and video processing .

First, import all the required packages by following this image :

				
					
# importing the required packages
import pyautogui
import cv2
import numpy as np

We have to create a VideoWriter object. Also, we have to specify the output file name, Video codec, FPS, and video resolution. In video codec, we have to specify a 4-byte code (such as XVID, MJPG, X264, etc.). We’ll be using XVID here.

				
					
# Specify resolution 
resolution = (1920, 1080)

# Specify video codec
codec = cv2.VideoWriter_fourcc("XVID")

# Specify name of Output file 
filename = "Recording.avi"

# Specify frames rate. We can choose # any value and experiment with it
fps = 60.0

# Creating a Videowriter object
out = cv2.Videowriter(filename, codec, fps, resolution)

Optional: To display the recording in real-time, we have to create an Empty window and resize it.

				
					
# Create an Empty window
cv2.namedWindow("Live", cv2.WINDOW_NORMAL)
# Resize this window
cv2.resizeWindow("Live", 480, 270)

We will be running an infinite loop and in each iteration of the loop, we will take a screenshot and write it to the output file with the help of the video writer.

				
					
while True:

# Take screenshot using PyAutoGUI 
img = pyautogui.screenshot()

# Convert the screenshot to a numpy array 
frame = np.array(img)

# Convert it from BGR (Blue, Green, Red) to # RGB (Red, Green, Blue)
frame = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)

# write it to the output file
out.write(frame)

# Optional: Display the recording screen 
cv2.imshow('Live', frame)

# Stop recording when we press 'q' if
cv2.waitKey(1) == ord('q'):
break

After everything is done, we will release the writer and destroy all windows opened by OpenCV.

				
					
# Release the video writer
out.release()

#Destroy all windows 
cv2.destroyAllWindows()

Source Code :

main.py

				
					# importing the required packages
import pyautogui
import cv2
import numpy as np

# Specify resolution
resolution = (1920, 1080)

# Specify video codec
codec = cv2.VideoWriter_fourcc(*"XVID")

# Specify name of output file
filename = "Recording.avi"

# Specify frame rate
fps = 60.0

# Creating a VideoWriter object
out = cv2.VideoWriter(filename, codec, fps, resolution)

# Create an empty window
cv2.namedWindow("Live", cv2.WINDOW_NORMAL)

# Resize this window
cv2.resizeWindow("Live", 480, 270)

while True:
    # Take screenshot using PyAutoGUI
    img = pyautogui.screenshot()

    # Convert the screenshot to a numpy array
    frame = np.array(img)

    # Convert it from RGB to BGR (OpenCV format)
    frame = cv2.cvtColor(frame, cv2.COLOR_RGB2BGR)

    # Write it to the output file
    out.write(frame)
    
    # Optional: Display the recording screen
    cv2.imshow('Live', frame)
    
    # Stop recording when we press 'q'
    if cv2.waitKey(1) == ord('q'):
        break

# Release the video writer
out.release()

# Destroy all windows
cv2.destroyAllWindows()

Output :

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