如何使用openCV将视频导出为.mp4? [英] How to export video as .mp4 using openCV?
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问题描述
我正在使用openCV将视频导出为.mp4。我尝试了几种编解码器,但现在我没有成功。
这是一个从框架构建视频的功能:
$ b $
img1 = cv2.imread(temp / scr0.png)
高度,宽度,layers = img1.shape
codec = cv2.cv.CV_FOURCC('X','V','I','D')
video = cv2.VideoWriter(out_directory,codec,fps, (宽,高))
在我的范围(total_frames):
img_name =temp / scr+ str(i)+.png
img = cv2 .imread(img_name)
video.write(img)
video.release()
cv2.destroyAllWindows()
我通常会收到下一个错误消息,使用不同的编解码器:
标签XVID / 0x44495658与输出编解码器ID'13'不兼容
是否可以这样做和如何?
解决方案
直接解决您导出为.avi,然后使用python的调用终端命令转换为.mp4。
从子进程导入调用
dir = out_directory.strip(。avi)
command =avconv -i%s.avi -c:v libx264 -c:a copy%s.mp4%(dir,dir )
调用(command.split())
I am trying to export video as .mp4 with openCV. I have tried several codecs but for now I had no success.
This is a function that constructs a video from frames:
def create_movie(self, out_directory, fps, total_frames):
img1 = cv2.imread("temp/scr0.png")
height, width, layers = img1.shape
codec = cv2.cv.CV_FOURCC('X','V','I','D')
video = cv2.VideoWriter(out_directory, codec, fps, (width, height))
for i in range(total_frames):
img_name = "temp/scr" + str(i) + ".png"
img = cv2.imread(img_name)
video.write(img)
video.release()
cv2.destroyAllWindows()
I usually get next error message, using different codecs:
Tag XVID/0x44495658 incompatible with output codec id '13'
Is is possible to do this and how?
解决方案
There is a non-direct solution. You export as .avi and then convert to .mp4 using python's call which calls terminal command.
from subprocess import call
dir = out_directory.strip(".avi")
command = "avconv -i %s.avi -c:v libx264 -c:a copy %s.mp4" % (dir, dir)
call(command.split())
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