我写了下面的代码从摄像机读取视频显示和保存。在
当我用VideoCapture(0)中的选项0运行下面的代码时,它可以正常工作并显示我的网络摄像头视频,当我在VideoCapture(1)中将其更改为1以从第三方相机获取视频时,我得到错误。在
我用的是第三方摄像头,用他们的软件播放视频,我需要用我的python代码捕捉。。在
对于apbase codeqt示例,它还播放视频
我不能使用下面的python代码玩
import cv2
import numpy as np
import time
def nothing(x):
pass
cv2.namedWindow('images')
switch = 'Recording'
cv2.createTrackbar(switch, 'images',0,1,nothing)
cap = cv2.VideoCapture(0)
def writeVideo(frmae):
pass
switchstatus = 0
currentpos = 0
fourccs = cv2.VideoWriter_fourcc(*'MJPG')
out = cv2.VideoWriter('sample.avi', fourccs, 20.0, (640,480))
created = 0
startrecord = 0
def RecordVideo(frame):
global out
global created;
global startrecord
print "In the Record video" ,created, startrecord
if created == 0 and startrecord ==1:
filename ='test.avi'
filename=time.strftime("%Y-%m-%d-%H-%M-%S")+'.avi'
print "filename", filename
out = cv2.VideoWriter(filename,fourccs, 20.0, (640,480))
created = 1;
out.write(frame)
elif created == 1 and startrecord ==1:
out.write(frame)
def positionChanged(s):
global currentpos
global created
global startrecord
print "position changed", s
currentpos = s
if s==1:
startrecord = 1
created = 0
else:
startrecord = 0
if created==1:
created =0
out.release()
def switchchanged(s):
global switchstatus;
if switchstatus != s:
switchstatus = s
positionChanged(s)
while(1):
ret, frame = cap.read()
RecordVideo(frame)
cv2.imshow('images',frame)
s = cv2.getTrackbarPos(switch,'images')
switchchanged(s)
if cv2.waitKey(1) & 0xFF == ord('q'):
out.release()
cv2.destroyAllWindows()
break
错误
文件“C:\Python32Bit\视频.py,lime 89,in cv2.imshow('图像',帧)
eror:…\opencv\modules\hihggui\src\窗口.cpp:错误:(-215)尺寸、宽度和gt;0&;尺寸.高度>;0在函数cv::imshow中
它确实解决了我的问题。在
我通过禁用windows硬件设置菜单中的内置摄像头来实现这一点。我在一个朋友的电脑上做了这件事,所以现在无法访问它,但请检查一下this。我相信windows不会让openCV使用第0个视频捕获设备,所以你必须让任何一个你想用的摄像头成为硬件列表中的第一个。在
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