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Convert Image Frames to Video File using OpenCV in Python

This post will be helpful in learning OpenCV using Python programming. Here I will show how to implement OpenCV functions and apply it in various aspects using some examples. Then the output will be shown with some comparisons as well.

Requirements:

First, you need to setup your Python Environment with OpenCV. You can easily do it by following Life2Coding’s tutorial on YouTube: Linking OpenCV 3 with Python 3

Goals:

In this tutorial, I will show you how to merge or convert several frames to a video by combing the image frames using OpenCV library and Python coding.

Documentation:

Python: cv2.VideoWriter([filename, fourcc, fps, frameSize[, isColor]]) → <VideoWriter object>

Python: cv2.VideoWriter.write(image) → None

Write image frames to a video file

Parameters:          

  • filename – Name of the output video file.
  • fourcc – 4-character code of codec used to compress the frames. List of codes can be obtained at Video Codecs by FOURCC page.
    • VideoWriter_fourcc(c1, c2, c3, c4) → retval
  • fps – Framerate of the created video stream.
  • frameSize – Size of the video frames.
  • isColor – If it is not zero, the encoder will expect and encode color frames, otherwise it will work with grayscale frames (the flag is currently supported on Windows only).

Steps:

  • Read each image using cv2.imread()
  • Initialize the video writer using cv2.VideoWriter()
  • Save the frames to a video file using cv2.VideoWriter.write()
  • Wait for keyboard button press using cv2.waitKey()
  • Release the VideoWriter using cv2.VideoWriter.release()
  • Exit window and destroy all windows using cv2.destroyAllWindows()

Example Code:

Output:

Capture-1 Convert Image Frames to Video File using OpenCV in Python

Final Output

d Convert Image Frames to Video File using OpenCV in Python

life2coding_icon [] Convert Image Frames to Video File using OpenCV in Python

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