錯誤：視頻格式不支持，在嘗試對捕獲的幀執行操作時發生並保存視頻

Question

我編譯了此代碼，它以灰色格式保存從網絡攝像頭捕獲的視頻。視頻最後得到保存，但未保存在任何視頻播放器上播放。請幫助..

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

您正試圖以灰度格式保存視頻。對於您需要一個額外的參數傳遞給cv2.VideoWriter如下

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

最後一個參數是0因爲你沒有保存彩色幀。希望這可以解決您的問題