Save grayscale video in OpenCV?
There are 3 things to keep in mind when you are trying to write Grayscale image in video writer. 1. while reading the image,keep 0 followed by ','
image = cv2.imread("data/PCB.jpg",0)
2&3. While creating the video writer, declare shape in opposite way and keep 0 followed by ',' as we did in step 1
fourcc = cv2.VideoWriter_fourcc(*'XVID')
out = cv2.VideoWriter('output.avi',fourcc, 20.0, (image.shape[1],image.shape[0]),0)
For Windows OS try:
out = cv2.VideoWriter(outfilename, fourcc, fps, (width, height), 0)
It is possible that .DIVX
is looking for a 3-channel BGR image to write, but you're only providing it a single channel image, since you're trying to write a grayscale image
Try doing this:
frame = cv2.cvtColor(frame, cv2.COLOR_GRAY2BGR)
essentially this will try to convert your greyscale image to BGR image. While your pixel values will remain gray, this will change frame
to a 3-channel image