Question

我是使用Python的OpenCV新手。我目前正在使用python语言处理与opencv相关的项目。在我完成一组帧序列之后，我想阅读一个保存的视频。但是，当我执行读取视频的程序时，我收到错误，你们中的任何人都可以对可能出错的内容有所了解吗？谢谢。这是我的示例代码：

import cv2
import numpy as np
import os
import glob as gb

filename = "VideoDataSet/dynamicBackground/canoe/input"

img_path = gb.glob(filename)

videoWriter = cv2.VideoWriter('test.avi',cv2.VideoWriter_fourcc('M','J','P','G'), 25,(640,480))

for path in img_path:
 img  = cv2.imread(path) 
 img = cv2.resize(img,(640,480))
 videoWriter.write(img)
 print(path)
print ("you are success create.")

注意：已保存的视频名为＆＃39; test.avi＆＃39;没问题，能够在保存的文件位置播放。现在的问题是我想写一个程序代码来阅读视频并播放它。但是我收到了错误。

inputVideoName = 'test.avi'
cap = cv2.VideoCapture(inputVideoName)

if (cap.isOpened() == False): 
    print("Error opening video stream or file!")

while(True):
 ret, frame = cap.read()

 if ret == True:  
  cv2.imshow('Display Video Clip',frame)
  if cv2.waitKey(1) & 0xFF == ord('q'):break

这是错误：

 Error: OpenCV(3.4.1) Error: Assertion failed (chunk.m_size <= 0xFFFF) in 
 cv::AVIReadContainer::readFrame, file D:\Build\OpenCV\opencv- 
 3.4.1\modules\videoio\src\container_avi.cpp, line 514

Answer 1

尝试修改Opencv代码： https://github.com/opencv/opencv/pull/11146/commits/c6cf7f80808eee8cebec4c8417b2d99714defcac

的OpenCV /模块/ videoio / SRC / container_avi.cpp - CV_Assert（chunk.m_size＆lt; = 0xFFFF）; + CV_Assert（chunk.m_size＆lt; = 67108864）;

OpenCV_Python - 编写用于读取保存视频的代码（cv2.VideoWriter（））

1 个答案: