OpenCV 设置读取视频编码的问题 (fourcc:-1.0)

[专业的程序员]

小弟的代码：

#-*- coding: utf-8 -*-
import face_recognition
import dlib
import cv2
import time
from exceptions import Exception

# 调用openCV 库，获取摄像头影像
stream = cv2.VideoCapture(0)
#stream.set(6,cv2.VideoWriter_fourcc(*'MJPG'))
stream.set(6,cv2.VideoWriter_fourcc('M','J','P','G'))
stream.set(3,640)
stream.set(4,480)
stream.set(5,30)


运行起来出这个错误：
(process:1301): GStreamer-CRITICAL **: gst_element_get_state: assertion 'GST_IS_ELEMENT (element)' failed
VIDEOIO ERROR: V4L: Property <unknown property string>(6) not supported by device
VIDEOIO ERROR: V4L2: Unable to get property <unknown property string>(6) - Invalid argument
fourcc:-1.0

[专业的程序员]

@小老赵 解决肯定解决了，但是过了这么久我也不记得怎么解决的了

[小老赵]

请问您解决这个问题了嘛？ VIDEOIO ERROR: V4L: Property (6) not supported by device 我也遇到了相同的问题 ..