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• Keep getting WIN32Exception when running FFMPEG in ASP.NET project

  23 octobre 2014, par Lance Bloom

  I have an ASP.NET project and I want to use FFMPEG to help create thumbails for my videos. I’ve loaded FFMPEG into the project, and whenever I run my code I get the same error :

  ’ffmpeg.MainModule’ threw an exception of type ’System.ComponentModel.Win32Exception’
  "A 32 bit processes cannot access modules of a 64 bit process."

  I’m using VS 2013, and I’ve set my target platform to x86, and made 100% sure I am using the 32bit version of ffmpeg. I’m using the static libraries from this site (http://ffmpeg.zeranoe.com/builds/) I also tried to change the target platform to All CPUs or x64, and tried with both 32 and 64 bit versions of FFMPEG. Always the same error. I am running IIS Express when I test in my local environment.

  Here is my code. Would appreciate any help !

  String vSource = "http://example.com/myvideo.mp4";
  
  String path1 = HttpContext.Current.Request.PhysicalApplicationPath;
  
  
  
  Process ffmpeg = new Process();
  
  ProcessStartInfo startinfo = new ProcessStartInfo(HostingEnvironment.MapPath("~/App_Data/exe/ffmpeg.exe"), "-i " + vSource + "-ss 00:00:05.000 -f image2 -vframes 1 " + path1 +"thumbnail1.jpg");
  
  
  
  startinfo.RedirectStandardError = true;
  
  startinfo.RedirectStandardOutput = true;
  
  startinfo.RedirectStandardInput = true;
  
  startinfo.UseShellExecute = false;
  
  startinfo.CreateNoWindow = true;
  
  ffmpeg.StartInfo = startinfo;
  
  
  
  ffmpeg.Start();

• How can I stream a video from localhost to web browser using the video tag ?

  3 septembre 2021, par kup

  Basically what I want to stream a video to my browser both on localhost, using Flask, OpenCV, or FFmpeg.

  


  But I am not sure how to do it.

  


  I tried this :

  


  #!/usr/bin/env python
from flask import Flask, render_template, Response
import cv2
import sys
import numpy

app = Flask(__name__)

def get_frame():
    c=cv2.VideoCapture("output.mkv")

    while True:
        retval, im = c.read()
        imgencode=cv2.imencode('.jpg',im)[1]
        stringData=imgencode.tostring()
        yield (b'--frame\r\n'
            b'Content-Type: text/plain\r\n\r\n'+stringData+b'\r\n')

    del(c)

@app.route('/vid')
def vid():
     return Response(get_frame(),mimetype='multipart/x-mixed-replace; boundary=frame')


if __name__ == '__main__':
    app.run(host='localhost',port=5000, debug=True, threaded=True)


  


  But it's not working. Maybe because it is sending images. How can I stream video ?

  


• How to stream a video from localhost to web browser using video tag ?

  31 juillet 2021, par kup

  Basically what i want to stream a video to my browser both on localhost, using flask and opencv or ffmpeg.

  


  But not sure how to do it.

  


  i tried this :

  


  #!/usr/bin/env python
from flask import Flask, render_template, Response
import cv2
import sys
import numpy

app = Flask(__name__)

def get_frame():
    c=cv2.VideoCapture("output.mkv") 

    while True:
        retval, im = c.read()
        imgencode=cv2.imencode('.jpg',im)[1]
        stringData=imgencode.tostring()
        yield (b'--frame\r\n'
            b'Content-Type: text/plain\r\n\r\n'+stringData+b'\r\n')

    del(c)

@app.route('/vid')
def vid():
     return Response(get_frame(),mimetype='multipart/x-mixed-replace; boundary=frame')


if __name__ == '__main__':
    app.run(host='localhost',port=5000, debug=True, threaded=True)


  


  but its not working may be because it is sending images, how can i stream video ?