fail reading data from rtsp stream with opencv python [closed]

asked 2017-09-15 04:13:35 -0500

lpplbiubiubiu gravatar image

updated 2017-09-15 09:16:27 -0500

i have problem in useing opencv python when reading rtsp stream, this works fine:

cv::VideoCapture video_cap;
video_cap.open("rtsp://admin:pw@ip//Streaming/Channels/1?tcp");

but when i use python, it doesn't work, my python code is

video_cap = cv2.VideoCapture("rtsp://admin:pw@ip//Streaming/Channels/1?tcp");
print(video_cap.isOpened())

and i had tested this:

video_cap = cv2.VideoCapture(0);
print(video_cap.isOpened())

it works fine too, I don't know why? Anyone can tell me?

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Closed for the following reason the question is answered, right answer was accepted by berak
close date 2017-09-15 07:10:57.425702

Comments

os, opencv version ? how did you install it ? (esp. the python version!)

berak gravatar imageberak ( 2017-09-15 04:16:19 -0500 )edit

2.4.13, I moved “cv2.pyd” in (the path python.exe exists)/Lib/site-packages

lpplbiubiubiu gravatar imagelpplbiubiubiu ( 2017-09-15 04:36:55 -0500 )edit

how did you install it ? (if it was via PIP - no ffmpeg support builtin, hence no ip-capture possible)

(and why on earth outdated 2.4 ?)

berak gravatar imageberak ( 2017-09-15 04:45:08 -0500 )edit

no, I didn‘t install it by pip, I just put "cv2.pyd" in python env. and is opencv 2.4.13 outdated? it's just released in 2016... and i run python code

import cv2 ;print(cv2.getBuildInformation())

and i get result like

Video I/O:   FFMPEG: YES
lpplbiubiubiu gravatar imagelpplbiubiubiu ( 2017-09-15 05:09:47 -0500 )edit

oh, that's on win, missed that.

make sure opencv_ffmpeg.dll is on your PATH (or next to where you run the script)

berak gravatar imageberak ( 2017-09-15 05:12:17 -0500 )edit

wow, it works, thanks, bro

lpplbiubiubiu gravatar imagelpplbiubiubiu ( 2017-09-15 05:55:23 -0500 )edit