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• View the incoming live mpeg stream from python socket

  19 janvier 2017, par ITried

  So I have an Intel Edison microcontroller running Linux that has a usb cam attached to it. It has a python script that uses ffmpeg to send the mpeg stream to a specific ip:port. I have another ’server’ script on my computer that opens a basic socket and binds on that port. The stream is clearly transferring because when I receive on the server, I print to terminal and all this gibberish and outputs. My question is how can I use ffmpeg or OpenCV (or anything else really) to receive from this port and view it real time ?
  On the Intel Edison, this command transmits data :

  os.system("/home/root/bin/ffmpeg/ffmpeg -s 640x480 -f video4linux2 -i /dev/video0 -f mpeg1video -b 800k -r 30 http://myip:8082")

  On the ’server’ side this the basic socket for binding and receiving.

  s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
  
  s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
  
  s.bind(('',8082))
  
  s.listen(1)
  
  conn, addr = s.accept()
  
  print "Connected to:", addr
  
  while True:
  
      data = conn.recv(1024)
  
      if data:
  
          print data

  I want to be able to view the incoming stream live, capture images, or save to video file. I tried looking online, but have not found any for live stream capture through python socket.

  thanks in advance !

• Live stream PowerPoint + Video - ffmpeg ? [on hold]

  21 novembre 2016, par Mango

  I’m in the unenviable position of needing to live stream a seminar with one video camera and PowerPoint. We need to switch between the video and PowerPoint at arbitrary times. The switch need not be fancy like a dissolve, and in fact it can take up to three seconds. The audio however must remain uninterrupted and must be synced with both video streams.

  I had the idea of creating a batch file with two ffmpeg commands : one that captured the desktop, and one that captured video from the camera. ffmpeg pushes the video to a local UDP port. Then, it loops.

  A separate ffmpeg process receives the local stream and pushes it to an RTMP server. All I have to do to switch video sources is kill the first ffmpeg.

  This works for video, but I haven’t figured out how to get the audio to sync.

  I’m aware of expensive video production software that provides this sort of thing as a service, but I thought I would see if I could do it open source if possible.

  Any suggestions would be appreciated.

• ffmpeg and ffserver live stream to HTML5

  19 novembre 2016, par andrixnet

  What would be the setup for a reasonably supported live stream with ffmpeg and ffserver ?

  I mean I know ffmpeg can’t live stream MP4.
  It can live stream flv, but that requires flash plugin.
  I’ve read about HLS which is specific for Apple target devices.

  My target is mostly windows PC/laptop (Firefox, Chrome, Opera, optionally MSIE 10+) and Android smartphones (android 4+).
  Mac OSX and iOS devices are of little interest, if it works, ok, but not a requirement.

  On the playback side the target is pure HTML5 with <video></video> tag. No Flash.
  On the server side : ffserver.
  On broadcast side : ffmpeg with capture device as video and audio source.

  Can anyone suggest a configuration for ffmpeg+ffserver ?