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• 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.

  


• avformat/avc, mxfenc : Avoid allocation of H264 SPS structure, fix memleak

  24 juin 2020, par Andreas Rheinhardt

  avformat/avc, mxfenc : Avoid allocation of H264 SPS structure, fix memleak
  Up until now, ff_avc_decode_sps would parse a SPS and return some
  
  properties from it in a freshly allocated structure. Yet said structure
  
  is very small and completely internal to libavformat, so there is no
  
  reason to use the heap for it. This commit therefore changes the
  
  function to return an int and to modify a caller-provided structure.
  
  This will also allow ff_avc_decode_sps to return better error codes in
  
  the future.
  It also fixes a memleak in mxfenc : If a packet contained multiple SPS,
  
  only the SPS structure belonging to the last SPS would be freed, the
  
  other ones would leak when the pointer is overwritten to point to the
  
  new SPS structure. Of course, without allocations there are no leaks.
  
  This is Coverity issue #1445194.
  Furthermore, the SPS structure has been renamed from
  
  H264SequenceParameterSet to H264SPS in order to avoid overlong lines.
  Reviewed-by : Tomas Härdin <tjoppen@acc.umu.se>
  
  Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
  

  • [DH] libavformat/avc.c
  • [DH] libavformat/avc.h
  • [DH] libavformat/mxfenc.c

• avcodec/v4l2_m2m : adapt to call close() on init fail

  2 août 2020, par Andriy Gelman

  avcodec/v4l2_m2m : adapt to call close() on init fail
  This fixes several mem leaks when init of encoder/decoder failed.
  Fixes ticket #8285
  Signed-off-by : Andriy Gelman <andriy.gelman@gmail.com>
  

  • [DH] libavcodec/v4l2_m2m.c
  • [DH] libavcodec/v4l2_m2m_dec.c
  • [DH] libavcodec/v4l2_m2m_enc.c