如何使用OpenCV和Python录制视频?
我看过OpenCV关于如何使用如何使用OpenCV和Python录制视频?,python,opencv,video-recording,Python,Opencv,Video Recording,我看过OpenCV关于如何使用VideoCapture和VideoWriter捕获和写出视频文件的介绍。但我一直得到: OpenCV Error: Assertion failed (dst.data == dst0.data) in cvCvtColor, file /tmp/opencv-n8PM/opencv-2.4.7.1/modules/imgproc/src/color.cpp, line 4422 Traceback (most recent call last): File
VideoCapture
和VideoWriter
捕获和写出视频文件的介绍。但我一直得到:
OpenCV Error: Assertion failed (dst.data == dst0.data) in cvCvtColor, file
/tmp/opencv-n8PM/opencv-2.4.7.1/modules/imgproc/src/color.cpp, line 4422
Traceback (most recent call last):
File "examples/observer/observer.py", line 17, in <module>
video_writer.write(frame)
cv2.error: /tmp/opencv-n8PM/opencv-2.4.7.1/modules/imgproc/src/color.cpp:4422: error:
(-215) dst.data == dst0.data in function cvCvtColor
在C++中,如果你可以通过1的编解码器。然后,您可以手动从计算机上的所有编解码器中选择编解码器。在python中可能也是如此,但我在文档中找不到它
video_writer = cv2.VideoWriter("output.avi", -1, 20, (680, 480))
请尝试确保opencv可以在您的计算机上找到XVID。帧的大小可能不正确:
w=int(capture.get(cv2.cv.CV_CAP_PROP_FRAME_WIDTH ))
h=int(capture.get(cv2.cv.CV_CAP_PROP_FRAME_HEIGHT ))
# video recorder
fourcc = cv2.cv.CV_FOURCC(*'XVID') # cv2.VideoWriter_fourcc() does not exist
video_writer = cv2.VideoWriter("output.avi", fourcc, 25, (w, h))
为我工作时,我遇到了类似的问题。
如果问题出现在帧大小和颜色的深度或编解码器中,则应该进行调试。尝试将空数组写入文件:
capSize = (100, 100) # this is the size of my source video
fourcc = cv2.cv.CV_FOURCC('m', 'p', '4', 'v')
out = cv2.VideoWriter('output.mov',fourcc, 1, capSize)
...
out.write(125 * np.ones((100,100,3), np.uint8))
...
将-1作为编解码器传递也适用于python?你可以接受答案,或者用你的解决方案编辑你的帖子。
capSize = (100, 100) # this is the size of my source video
fourcc = cv2.cv.CV_FOURCC('m', 'p', '4', 'v')
out = cv2.VideoWriter('output.mov',fourcc, 1, capSize)
...
out.write(125 * np.ones((100,100,3), np.uint8))
...