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• How to fix opencv python cv2.VideoCapture rtsp onvif "nonmatching transport in server reply" error ?

  28 juillet 2022, par Projetos Prince Tower

  I am on Windows and using Python 3.6.4. I've installed OpenCV (3.4) via pip. Here is the code I am using :

  


  import numpy as np
import cv2

cap = cv2.VideoCapture('rtsp://192.168.15.116:554/onvif1')

while(cap.isOpened()):
    ret, frame = cap.read()

    gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)

    cv2.imshow('frame',gray)
    if cv2.waitKey(1) & 0xFF == ord('q'):
        break

cap.release()
cv2.destroyAllWindows()


  


  I am getting the following error :

  


  [rtsp @ 03858a40] Nonmatching transport in server reply
warning: Error opening file (/build/opencv/modules/videoio/src/cap_ffmpeg_impl.hpp:808)
warning: rtsp://192.168.15.116:554/onvif1 (/build/opencv/modules/videoio/src/cap_ffmpeg_impl.hpp:809)


  


  I can go to cmd and type

  


  ffplay rtsp://192.168.15.116/onvif1


  


  and the video will run as well as in VLC using the same rtsp address. Using

  


  cv2.VideoCapture(0)


  


  also works with my webcam.

  


  I've tried copying the file "opencv_ffmpeg340.dll" into all path folders but to no avail. I've also checked build and all video I/O show up with "YES" except for Gstreamer. Any help would be appreciated.
Thank you.

  


• "Error : FFMPEG not found" : Error with simple Discord Bot

  23 décembre 2019, par Robin Seerig

  I’m using Windows (64-bit) with Node.js and npm installed.
  In my project file, I have run the following commands :

  npm init
  
  npm install discord.js --save
  
  npm install ffmpeg --save

  Now i just created the code for a basic bot here is the main code.
  I list here the important :

   if (message.content === '!play' && message.member.roles.has(message.guild.roles.find("name", config.role_name).id)) {
  
      if (!message.member.voiceChannel) return log("?");
  
         message.member.voiceChannel.join().then(function (connection){      
  
         });
  
   }

  Then, in Discord, I say the following :

   [1517932146]  Musik bot loaded
  
      (node:35760) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 2): Error: FFMPEG not found

  I have already tested the following :

  • reinstallation of everything
  • others of the require names e.t.z.
  • simplify the code

  So if you have any ideas then let me know.

  Solution

  npm i ffmpeg-binaries@3.2.2-3

  link

• NReco Error : "The specified executable is not a valid application for this OS platform"

  18 juillet 2018, par swabygw

  I’m using the NReco to convert videos. I declare the converter like the following, and add a handler to ConvertProgress.

  Dim vid_Convert As New FFMpegConverter
  
  AddHandler vid_Convert.ConvertProgress, Sub(sender, e) vidConvertProgress(folder,fname,fext,fverdest,fint,fcount,fhost,e)
  
  vid_Convert.ConvertMedia(file_temp, Nothing, file_dest, "mp4", cSettings)

  The media is converted fine. The problem is in the handler where I declare a new converter and have it do a GetVideoThumbnail (when the prior conversion is completed), like this :

  Dim vid_Extract As New FFMpegConverter
  
  vid_Extract.GetVideoThumbnail(inputFile, outputFile, extractposition)

  This produces the error "The specified executable is not a valid application for this OS platform". However, I’ve executed the GetVideoThumbnail method by itself elsewhere in my program with no problem. For some reason, it won’t work if it’s executed within the handler. Is there a way around this ?