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• configure : don’t enable tls protocols if network is disabled

  2 juin 2015, par James Almer

  configure : don’t enable tls protocols if network is disabled
  This was a regression introduced with d8ffb2055f0e0fcb5d025bab72eb19c2a886c125.
  Signed-off-by : James Almer <jamrial@gmail.com>
  
  Signed-off-by : Martin Storsjö <martin@martin.st>
  

  • [DH] configure

• Capturing network video using opencv

  3 septembre 2014, par Subhendu Sinha Chaudhuri

  I am using ffserver and ffmpeg combination to capture web camera video and transmit it through my network.

  I want to capture this video using opencv and python from another computer.
  I can see the video (cam1.asf) in the browser of another computer. But my opencv + python code could not capture any frame.

  Code for ffserver

  HTTPPort 8090
  
  HTTPBindAddress 0.0.0.0
  
  MaxHTTPConnections 2000
  
  MaxClients 1000
  
  MaxBandWidth 2000
  
  
  
  <feed>
  
     File ./tmp/feed1.ffm
  
     FileMaxSize 1G
  
     ACL allow 127.0.0.1
  
  </feed>
  
  
  
  <stream>
  
    Feed feed1.ffm
  
    Format asf
  
    VideoCodec msmpeg4v2
  
    VideoFrameRate 30
  
    VideoSize vga
  
  </stream>

  FFmpeg

  $ffmpeg -f video4linux2 -i /dev/video0 192.168.1.3 /cam1.ffm

  This stream can be seen in the browser

  But with opencv code

  import sys
  
  import cv2.cv as cv
  
  import numpy
  
  
  
  video="http://http://192.168.1.3:8090/cam1.asf"
  
  capture =cv.CaptureFromFile(video)
  
  cv.NamedWindow('Video Stream', 1 )
  
  while True:
  
    # capture the current frame
  
    frame = cv.QueryFrame(capture)
  
    #if frame is None:
  
     # break
  
    #else:
  
      #detect(frame)
  
    cv.ShowImage('Video Stream', frame)
  
    if cv.WaitKey(10) == 27:
  
      print 'ESC pressed. Exiting ...'
  
      break

  I donot get any output in the stream

  My aim is to work with the web camera video both at the base station (ie where the web camera is connected) and also at the network location

• Acceptable Video Size For Social Network With FFMpeg

  2 août 2022, par John Santos

  I'm building a social network on Android and using FFMPeg to compress the videos before uploading them. Videos will have maximum 1 minute of duration.

  



  The original video for test has 87.74Mb 1080x1920.

  



  Trying to find the middle point between quality and file size I could get to a video size of either 26Mb with an "meh" quality (which I'm not happy with) or 33.06Mb with a good quality (scaling the video to 480x852).

  



  Problems :

  



  1) It's taking an average of 2min 30sec to compress a 1 minute video !

  



  2) Even 25Mb seems to be too much for a 1 minute video for a social network

  



  The ask :

  



  1) Any clue how do Instagram and Facebook do it to compress and upload the same video above within 1 minute !!?? I know they compress it cause the quality is not the same when on Facebook/Instagram but how to they get it done that fast ?

  



  2) What would it be an acceptable file size for a 1 minute video on Facebook/Instagram ? I'm worried about wasting too much storage for 1 minute videos. Does anyone have any idea about it ?

  



  ---

  



  I'm searching a lot about FFMpeg commands to get it better and better but it would be easier if I had in mind what I want to achieve.