OpenCV: Difference between revisions
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codec = cv2.VideoWriter_fourcc(*"avc1") | codec = cv2.VideoWriter_fourcc(*"avc1") | ||
fps = 15 | fps = 15 | ||
output_video.open("video_output.mp4", codec, fps, | image_size = (100, 100) | ||
output_video.open("video_output.mp4", codec, fps, image_size, True) | |||
if not output_video.isOpened(): | if not output_video.isOpened(): | ||
print("Error opening output video") | print("Error opening output video") | ||
Revision as of 14:02, 12 December 2019
OpenCV is a very popular computer vision and image processing library.
There are bindings for C++, Java, JavaScript, and Python
Installation
- Download Python 3
pip install opencv-python
Usage
Getting Started
import cv2
# Use 0 to read in grayscale
my_image = cv2.imread("my_image.png", 0)
Video
Reading Video
Writing Video
C++ Video Write
Note that OpenCV does not handle audio.
output_video = cv2.VideoWriter()
codec = cv2.VideoWriter_fourcc(*"avc1")
fps = 15
image_size = (100, 100)
output_video.open("video_output.mp4", codec, fps, image_size, True)
if not output_video.isOpened():
print("Error opening output video")
# Write all of your frames
# while have_frames:
# output_video.write(my_frame)
# Release the video
output_video.release()