opencv无法停止流:设备的不适当的ioctl [英] opencv Unable to stop the stream: Inappropriate ioctl for device

问题描述

我只想将视频转换为帧图像.

I just want to convert video to frame images.

使用此简单代码

import cv2
vidcap = cv2.VideoCapture('gog.mp4')
success,image = vidcap.read()
count = 0
success = True
while success:
  success,image = vidcap.read()
  print 'Read a new frame: ', success
  cv2.imwrite("frame%d.jpg" % count, image)
  count += 1

输出是

无法停止流:设备的ioctl不适当

Unable to stop the stream: Inappropriate ioctl for device

我正在ubuntu服务器上使用python 2.7.6.

I am using python 2.7.6 on ubuntu server.

推荐答案

我已经在Ubuntu 16.04.3.上解决了此问题.

I have solved this issue on Ubuntu 16.04.3.

1. sudo apt-get install ffmpeg
2. sudo apt-get install libavcodec-dev libavformat-dev libavdevice-dev

3. 使用以下命令重建OpenCV 3.3.0:

1. sudo apt-get install ffmpeg
2. sudo apt-get install libavcodec-dev libavformat-dev libavdevice-dev

3. Rebuild OpenCV 3.3.0 with the following commands:

• cd build
• cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D WITH_FFMPEG=ON -D WITH_TBB=ON -D WITH_GTK=ON -D WITH_V4L=ON -D WITH_OPENGL=ON -D WITH_CUBLAS=ON -DWITH_QT=OFF -DCUDA_NVCC_FLAGS="-D_FORCE_INLINES" ..
• make -j7
• sudo make install

• cd build
• cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D WITH_FFMPEG=ON -D WITH_TBB=ON -D WITH_GTK=ON -D WITH_V4L=ON -D WITH_OPENGL=ON -D WITH_CUBLAS=ON -DWITH_QT=OFF -DCUDA_NVCC_FLAGS="-D_FORCE_INLINES" ..
• make -j7
• sudo make install

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