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• how to stream live videos with no latency (ffplay, mplayer) and what kind of wrapper could be used with ffplay ?

  10 juin 2015, par user573014

  I have been testing playing multiple live streams using different players because I wanted to get the lowest latency value. I tried gstreamer player (gst-launch-0.01), mplayer, totem and ffmpeg player (ffplay). I used different configuration values to get the lowest latency for each of them for example :

  ffplay -fflags nobuffer 
  
  mplayer -benchmark

  The protocol I am streaming with is udp and I am getting a better values with ffplay than mplayer or gst-launch. To be honest, I don’t know what kind of configuration I need to do it the gstreamer to get a lower latency.
  Now, what I need is two things :

  1. I would like to know if someone has a better suggestion about streaming a live stream with lower latency < 100 ms. I am now getting higher than 100 ms which is not really efficient for me.

  2. Since I am using ffplay currently, because it is the best so far. I would like to do a simple gui with a play and record button and 3 screens to stream from different video servers, I just don’t know what kind of wrapper (which should be really fast) to use !

• Using ffmpeg to stream live video from a raspberry pi to a web server for distribution

  7 mars 2019, par CNorlander

  I am trying to build a device that will encode h.264 video on a raspberrypi and stream it out to a separate web server in the cloud. The main issue I am having is most implementations I search for either have the web server directly on the pi or have the embedded player playing video directly from the device.

  I would like it to be pretty much plug and play no matter what network I am on ie no port forwarding of any sort all I need to do is connect the device to the network and the stream will be visible on a webpage.

  One possible solution to the issue is just simply encode frames in base 64 as jpegs and send them to a an endpoint on the webserver, however, this is a huge waste of bandwidth and wont allow for the framerate h.264 would.

  Any idea on some possible technologies that could be used to do this ?

  I feel like it can be done with some websockets or zmq and ffmpeg somehow but I am not sure.

• How to display live video stream from ffmpeg in C#/WPF ?

  9 avril 2019, par Kevin McDaniel

  I am trying to get an output from FFmpeg.exe to display live on my wpf media player. The inputs to FFmpeg are an IP camera and a video file (mp4).

  The WPF media player needs a URI as the input. So, I have tried hosting a Udp server for FFmpeg to post to (which I can log the data coming in on the console). Then I try to get the stream using the media player, but no success.

  My Udp listener :

  UdpClient _udpServer = new UdpClient(5000);
  
  UdpClient _udpClient = new UdpClient(5001);
  
  private void UdpListen() {
  
     while (true)
  
     {
  
        IPEndPoint RemoteIpEndPoint = new IPEndPoint(IPAddress.Any, 0);
  
        Byte[] receiveBytes = _udpServer.Receive(ref RemoteIpEndPoint);
  
        if (RemoteIpEndPoint.ToString() != "192.168.1.110:5001")
  
        {
  
           IPEndPoint ep = new IPEndPoint(IPAddress.Parse("192.168.1.110"), 5001);
  
           _udpClient.Send(receiveBytes, receiveBytes.Length, ep);
  
        }
  
        Console.WriteLine("receive data from " + RemoteIpEndPoint.ToString() + ": " + receiveBytes.Length);
  
     }
  
  }

  The ffmpeg output : ... -f mpegts udp ://192.168.1.110:5000

  I pass this into the media player : udp ://192.168.1.110:5001

  I am expecting to see the video file being displayed as ffmpeg is processing the output. But, I just see ffmpeg do its processing, and the Udp listener writing to the console.
  Let me know where I am going wrong, thanks in advance