Question

我编译了这段代码，用于保存从网络摄像头捕获的视频，采用灰色格式。视频最后保存但不在任何视频播放器上播放。请帮助..

import numpy as np
import cv2

cap = cv2.VideoCapture(0)

# Define the codec and create VideoWriter object
fourcc = cv2.VideoWriter_fourcc(*'DIVX')
out = cv2.VideoWriter('output.avi',fourcc, 20.0, (640,480))

while(cap.isOpened()):
    ret, frame = cap.read()
    if ret==True:
        frame = cv2.flip(frame,0)

    # write the flipped frame
    gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)

    out.write(gray)

    cv2.imshow('frame',gray)
    if cv2.waitKey(20) & 0xFF == ord('q'):
        break
    else:
        break

# Release everything if job is finished
cap.release()
out.release()
cv2.destroyAllWindows()

Answer 1

您正尝试以灰度格式保存视频。为此，您需要将其他参数传递给cv2.VideoWriter，如下所示

out = cv2.VideoWriter('output.avi',fourcc, 20.0, (640,480), 0)

最后一个参数是0，因为您没有保存彩色帧。希望这能解决您的问题

错误：不支持视频格式，尝试对捕获的帧执行操作并保存视频时出现

1 个答案: