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ip camera rtsp stream linux latency



The Next CEO of Stack OverflowHow do I save a stream to a file in C#?How do I generate a stream from a string?Installing OpenCv with gstreamer and ffmpeg support in Ubuntu 13.04 64bitsOpencv RTSP streaming with ffmpeg and gstreamerOpenCV VideoCapture cant open/read urlSegmentation fault OpenCV cap.read udp stream PythonIssues reading frames from an RTSP h.264 IP camerapython opencv could not display video while using third party cameraCan't stream to VLC from my Conceptronic IP Camera (RTSP)How to read RTSP Video from OpenCV with Low CPU Usage?










0















I'm trying to access a RTSP video stream from an IP camera using OpenCV.
Below code works properly on Windows or Mac.



import cv2
source = "rtsp://user:pass@ip"
cap=cv2.VideoCapture(source)
while True:
t1=time.time()
ret, frame = cap.read()
print("Read Time:",round((time.time()-t1)*1000,1))


when fps=5 or fps=30 (Windows, Mac);



Read Time 30.2
Read Time 31.8
Read Time 32.1
Read Time 33.2
Read Time 32.2


But on linux, it works a bit strange. First cap.read() waits long time and then this delay cause 2-10 seconds latency for video. If fps increases then delay decreases. I can't find a solution. Can you help me?



When fps=30 (Linux);



Read Time **1736.5**
Read Time 30.2
Read Time 32.8
Read Time 32.1
Read Time 34.2


When fps=5 (Linux);



Read Time **10412.8**
Read Time 196.2
Read Time 199.0
Read Time 199.6
Read Time 200.1









share|improve this question


























    0















    I'm trying to access a RTSP video stream from an IP camera using OpenCV.
    Below code works properly on Windows or Mac.



    import cv2
    source = "rtsp://user:pass@ip"
    cap=cv2.VideoCapture(source)
    while True:
    t1=time.time()
    ret, frame = cap.read()
    print("Read Time:",round((time.time()-t1)*1000,1))


    when fps=5 or fps=30 (Windows, Mac);



    Read Time 30.2
    Read Time 31.8
    Read Time 32.1
    Read Time 33.2
    Read Time 32.2


    But on linux, it works a bit strange. First cap.read() waits long time and then this delay cause 2-10 seconds latency for video. If fps increases then delay decreases. I can't find a solution. Can you help me?



    When fps=30 (Linux);



    Read Time **1736.5**
    Read Time 30.2
    Read Time 32.8
    Read Time 32.1
    Read Time 34.2


    When fps=5 (Linux);



    Read Time **10412.8**
    Read Time 196.2
    Read Time 199.0
    Read Time 199.6
    Read Time 200.1









    share|improve this question
























      0












      0








      0








      I'm trying to access a RTSP video stream from an IP camera using OpenCV.
      Below code works properly on Windows or Mac.



      import cv2
      source = "rtsp://user:pass@ip"
      cap=cv2.VideoCapture(source)
      while True:
      t1=time.time()
      ret, frame = cap.read()
      print("Read Time:",round((time.time()-t1)*1000,1))


      when fps=5 or fps=30 (Windows, Mac);



      Read Time 30.2
      Read Time 31.8
      Read Time 32.1
      Read Time 33.2
      Read Time 32.2


      But on linux, it works a bit strange. First cap.read() waits long time and then this delay cause 2-10 seconds latency for video. If fps increases then delay decreases. I can't find a solution. Can you help me?



      When fps=30 (Linux);



      Read Time **1736.5**
      Read Time 30.2
      Read Time 32.8
      Read Time 32.1
      Read Time 34.2


      When fps=5 (Linux);



      Read Time **10412.8**
      Read Time 196.2
      Read Time 199.0
      Read Time 199.6
      Read Time 200.1









      share|improve this question














      I'm trying to access a RTSP video stream from an IP camera using OpenCV.
      Below code works properly on Windows or Mac.



      import cv2
      source = "rtsp://user:pass@ip"
      cap=cv2.VideoCapture(source)
      while True:
      t1=time.time()
      ret, frame = cap.read()
      print("Read Time:",round((time.time()-t1)*1000,1))


      when fps=5 or fps=30 (Windows, Mac);



      Read Time 30.2
      Read Time 31.8
      Read Time 32.1
      Read Time 33.2
      Read Time 32.2


      But on linux, it works a bit strange. First cap.read() waits long time and then this delay cause 2-10 seconds latency for video. If fps increases then delay decreases. I can't find a solution. Can you help me?



      When fps=30 (Linux);



      Read Time **1736.5**
      Read Time 30.2
      Read Time 32.8
      Read Time 32.1
      Read Time 34.2


      When fps=5 (Linux);



      Read Time **10412.8**
      Read Time 196.2
      Read Time 199.0
      Read Time 199.6
      Read Time 200.1






      python stream rtsp ip-camera






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Mar 8 at 12:50









      foreign222foreign222

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