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• UDP : Streaming desktop ffmpeg over Wide area network

  16 novembre 2017, par Megan Woodruff

  I am using ffmpeg to stream my desktop. It works perfectly over the LAN with two connected PCs ; however, over a WAN, the reciever gets unviewable shearing and tearing of the desktop. We figured it was because the LAN has a 5 MB/s bandwith and the WAN has a bandwidth limitation 1 MB/s. When I checked the ethernet output of the sending PC, the bandwidth was 1 MB/s .02.

  The original ffmpeg script I used was within a batch file was :

  ffmpeg -f dshow -i video="screen-capture-recorder"-vcodec
  
  libx264 -preset ultrafast -pix_fmt yuv420p -tune zerolatency -r 30 -b:v 750k -minrate 750k -maxrate 750k  -f mpegts udp://ip:port 

  On the reciever side :
  1. I opened the scream capture recorder GUI.
  2. Inserted the appropriate udp address.
  3. Hit "Start Recieving".

  I did a wireshark analysis and noticed most of the packets I saw were MPEG TS packets with had "MP2T fragment of a reassembled package" in the description column.

  My question is : has anyone been able to successful stream via ffmpeg over a wide area network with no issues of the recieving video ? If so, what ffmpeg parameters did you use for consistent results ?

• why can't I access rtsp camera in python ?

  6 septembre 2024, par Come Oh

  I'm trying to access an RTSP camera in Python and get frame information from it.

  


  One of the camera options is RTSP authentication, and when I include it, VLC asks for login information. ('[rtsp @ ] method DESCRIBE failed : 401 Unauthorized')

  


  If I turn it off, I can access it regardless of ID or PW, but if I turn it on, I can't access it from Python.

  


  I verified that it works by putting the same RTSP address, ID, and PW in VLC, and it doesn't contain any symbols like '@' which is a common problem.

  


  I used several libraries, including Opencv, ffmpeg, and others, and got the same
'[rtsp @ ] method DESCRIBE failed : 401 Unauthorized' and only this error appears

  


  What could be the cause,,, please help...

  


  import cv2

url = "rtsp://username:password@camera_ip:554/stream_path"

cap = cv2.VideoCapture(url)

if not cap.isOpened():
    print("Failed to open RTSP stream.")
    exit()

while True:
    ret, frame = cap.read()
    if not ret:
        print("Failed to read frame.")
        break
    cv2.imshow('RTSP Stream', frame)
    if cv2.waitKey(1) & 0xFF == ord('q'):
        break

cap.release()
cv2.destroyAllWindows()


  


  I tried running the above code and debugging it using the ffmpeg library.

  


• why can't access rtsp camera in python ?

  6 septembre 2024, par Come Oh

  I'm trying to access an RTSP camera in Python and get frame information from it.

  


  One of the camera options is RTSP authentication, and when I include it, VLC asks for login information. ('[rtsp @ ] method DESCRIBE failed : 401 Unauthorized')

  


  If I turn it off, I can access it regardless of ID or PW, but if I turn it on, I can't access it from Python.

  


  I verified that it works by putting the same RTSP address, ID, and PW in VLC, and it doesn't contain any symbols like '@' which is a common problem.

  


  I used several libraries, including Opencv, ffmpeg, and others, and got the same
'[rtsp @ ] method DESCRIBE failed : 401 Unauthorized' and only this error appears

  


  What could be the cause,,, please help...

  


  import cv2

url = "rtsp://username:password@camera_ip:554/stream_path"

cap = cv2.VideoCapture(url)

if not cap.isOpened():
    print("Failed to open RTSP stream.")
    exit()

while True:
    ret, frame = cap.read()
    if not ret:
        print("Failed to read frame.")
        break
    cv2.imshow('RTSP Stream', frame)
    if cv2.waitKey(1) & 0xFF == ord('q'):
        break

cap.release()
cv2.destroyAllWindows()


  


  I tried running the above code and debugging it using the ffmpeg library.