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  • ffmpeg processing the live screen streaming very slowly

    27 février 2020, par Ant's

    I’m trying to do live screen sharing using ffmpeg using the following command :

    ffmpeg -f avfoundation -i "1:1" -c:v libx264 -threads 4 -preset ultrafast -c:a aac -ar 44100 -f flv rtmp://localhost/live/test

    Now I have a rtmp server, which receives the data and using flv.js, I’m showing the live stream video on the browser. The integration works perfectly fine, but the problem was the stream is getting delayed very much. There is a delay for say atleast 10s ; I’m not sure, whether we can make it less delay (more like instant screen share).

    Note : I’m using the Node RTMP server using https://github.com/illuspas/Node-Media-Server. The code for that is over here :

    const NodeMediaServer = require('node-media-server');
    

    
const config = {
    
  rtmp: {
    
    port: 1935,
    
    chunk_size: 6000,
    
    gop_cache: true,
    
    ping: 30,
    
    ping_timeout: 60
    
  },
    
  http: {
    
    port: 8000,
    
    allow_origin: '*'
    
  }
    
};
    

    
var nms = new NodeMediaServer(config)
    
nms.run();

    Any suggestions ? I’m on MacOS

  • ffmpeg command not working with VANC data [closed]

    3 avril 2024, par Parmesh Kumawat

    when i am running below ffmpeg command

    


    ffmpeg -i "udp://ip:port?localaddr=ip&sources=ip&overrun_nonfatal=1&buffer_size=4000000&fifo_size=1000000" -c copy -map 0 -vsync passthrough -copyts vanc_stream1.ts

    


    the bin_data for VANC is changing/not recognized saving as below output

    


    Input #0, mpegts, from 'vanc_stream_ffmpeg.ts':                                                                                                                                                            
  Duration: N/A, bitrate: N/A                                                                        
  Program 1  
  Metadata:
      service_name    : Service01 
      service_provider: FFmpeg              
      Stream #0:0[0x100]: Data: bin_data ([6][0][0][0] / 0x0006) 
      Stream #0:1[0x101]: Data: bin_data ([6][0][0][0] / 0x0006)
      Stream #0:2[0x100]: Data: bin_data ([6][0][0][0] / 0x0006) 
      Stream #0:3[0x101]: Data: bin_data ([6][0][0][0] / 0x0006)


    


    It should be saved as

    


    Stream #0:0[0x100]: Data: bin_data ([6][0][0][0] / 0x0006) 
Stream #0:1[0x101]: Data: bin_data ([6][0][0][0] / 0x0006)
Stream #0:2[0x100]: Data: bin_data (VANC / 0x434E4156) 
Stream #0:3[0x101]: Data: bin_data (VANC / 0x434E4156) 


    


    I have tried below tsp command to fetch the stream and it works fine

    


    tsp -I ip port --source ip -O file stream_capture1.ts


    


    i need the same output with ffmpeg command

    


  • ffmpeg works in command line but it doesn't work well in c#

    14 août 2016, par Ahmad Ali Mukashaty

    I want to stream movie via udp so I use this command line and it works well

    ffmpeg -re -i test.mkv -q 1 -vcodec libx264 -f mpegts udp://network:port

    but I want to run this command line using c# like this :

    process = new Process();        
    
process.StartInfo.FileName = "cmd.exe";
    
process.StartInfo.WorkingDirectory = @"c:\FFmpegTool\bin";
    
process.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
    
process.StartInfo.Arguments = "/C ffmpeg.exe";
    
process.Start();
    

    
process.StartInfo.FileName = "ffmpeg";
    
process.StartInfo.Arguments = "-re -i test.mkv -q 1 -vcodec libx264 -f mpegts udp://network:port";
    
process.Start();

    it works but I can’t receive the stream

    why this commnand doesn’t work well when I use it in c# and what’s the different bettwen ranning command in cmd directly or using process class in c#

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