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• My (FFMPEG issue ) RTMP server(freebsd) wont let me hear video when I play a huge file over the server itself :/

  19 avril 2021, par Engi Gang

  Hey my name is Alisha from Norway im trying to get my RTMP server working the thing is that it works just fine but I just cant stream over it with ffmpeg I can stream to it on OBS and it works fine, but I am trying to a website where people could watch old public domain movies from the 1950 some of the films are actually pretty big lol.... anyways I detailed bellow more

  


  rm -rf /mnt/hls/loool && ffmpeg -re -i "$file" -c:v libx264 -c:a aac -b:v 300k -b:a 95k -f flv -flvflags no_duration_filesize rtmp ://lambright.xyz:1935/live/loool

  


  any work around I literally cant play the audio :( I can only hear (my source file is an MKV and 3gb )

  


  Note I had a smaller mp4 file and it did played the audio, the video isnt even playable in chrome but on VLC it is, but only a small file worked fine... its fine when I stream from my pc, but whats the point I am trying to set up my vintage 1950 serverbox :') trying to build a nice website where users could watch neat and decent old movies that are public domain if you wonder :/

  


  Another note when I am trying to play it on my iphone safari browser it does actually play parts but audio is super corrupted like you hear the audio sometimes :((

  


  rtmp {
    server {
        listen 1935; # Listen on standard RTMP port
        chunk_size 4000;

        application live {
            allow play all;
            live on;
            record off;
            hls on;
            hls_nested on;
            hls_path /mnt/hls/;
            hls_fragment 2s;
        }
        
    }
}


  


• Render Multiple Gifs with ffplay/ffmpeg in Winform

  17 juin 2019, par Purqs

  I’m trying to get x number of animated gifs to render on like a Panel or PictureBox and using transparency that is in each gif. I’ve tried a couple approaches but am not super famiular with ffmpeg and such. Below is some code that I use to get it to render inside a panel, but I can’t figure out how to get like 5 gifs to stack/layer on one another and still render as you would expect.

  I need/want this to render in the form and not outputted. I am a little confused to why the ffplay.exe doesn’t use the -i command and that might be why i can’t get it to render. any ideas ?

  Working example below.

  using System;
  
  using System.Collections.Generic;
  
  using System.ComponentModel;
  
  using System.Data;
  
  using System.Drawing;
  
  using System.Linq;
  
  using System.Text;
  
  using System.Threading.Tasks;
  
  using System.Windows.Forms;
  
  using System.Diagnostics;
  
  using System.Threading;
  
  using System.IO;
  
  using System.Reflection;
  
  using System.Runtime.InteropServices;
  
  using System.Drawing.Text;
  
  using System.Text.RegularExpressions;
  
  using System.Configuration;
  
  using Microsoft.Win32;
  
  using System.Windows.Forms.VisualStyles;
  
  
  
  //FOR THIS EXAMPLE CREATE FORM HAVE BUTTON ON IT AND PANEL.
  
  //button: button's click is "button1_Click"
  
  //panel: Needed to output the render on it.
  
  //FILES:
  
  //Test.Gif
  
  //These ff files came from the ffmpeg offical site.
  
  //ffplay.exe //currently using
  
  //ffmpeg.exe //thinking i need to use to get it how I want.
  
  //I most of the code below from https://stackoverflow.com/questions/31465630/ffplay-successfully-moved-inside-my-winform-how-to-set-it-borderless which was a good starting point.
  
  
  
  namespace Test_Form
  
  {
  
      public partial class Form1 : Form
  
      {
  
          [DllImport("user32.dll", SetLastError = true)]
  
          private static extern bool MoveWindow(IntPtr hWnd, int X, int Y, int nWidth, int nHeight, bool bRepaint);
  
  
  
          [DllImport("user32.dll")]
  
          private static extern IntPtr SetParent(IntPtr hWndChild, IntPtr hWndNewParent);
  
  
  
  
  
          //Process ffplay = null;
  
  
  
          public Form1()
  
          {
  
              InitializeComponent();
  
              Application.EnableVisualStyles();
  
              this.DoubleBuffered = true;
  
          }
  
  
  
  
  
  
  
          public Process ffplay = new Process();
  
          private void FFplay()
  
          {
  
              ffplay.StartInfo.FileName = "ffplay.exe";
  
              ffplay.StartInfo.Arguments = "-noborder Test.gif"; //THIS IS WHERE I INPUT THE GIF FILE
  
              ffplay.StartInfo.CreateNoWindow = true;
  
              ffplay.StartInfo.RedirectStandardOutput = true;
  
              ffplay.StartInfo.UseShellExecute = false;
  
  
  
              ffplay.EnableRaisingEvents = true;
  
              ffplay.OutputDataReceived += (o, e) => Debug.WriteLine(e.Data ?? "NULL", "ffplay");
  
              ffplay.ErrorDataReceived += (o, e) => Debug.WriteLine(e.Data ?? "NULL", "ffplay");
  
              ffplay.Exited += (o, e) => Debug.WriteLine("Exited", "ffplay");
  
              ffplay.Start();
  
  
  
              Thread.Sleep(1000); // you need to wait/check the process started, then...
  
  
  
              // child, new parent
  
              // make 'this' the parent of ffmpeg (presuming you are in scope of a Form or Control)
  
              SetParent(ffplay.MainWindowHandle, this.Handle);
  
  
  
              // window, x, y, width, height, repaint
  
              // move the ffplayer window to the top-left corner and set the size to 320x280
  
              MoveWindow(ffplay.MainWindowHandle, 800, 600, 320, 280, true);
  
  
  
              SetParent(ffplay.MainWindowHandle, this.panel1.Handle);
  
              MoveWindow(ffplay.MainWindowHandle, -5, -30, 320, 280, true);
  
          }
  
  
  
  //runs the FFplay Command
  
  private void button1_Click(object sender, EventArgs e)
  
          {
  
              FFplay();
  
  
  
          }
  
  
  
          private void Form1_FormClosed(object sender, FormClosedEventArgs e)
  
          {
  
              try { ffplay.Kill(); }
  
              catch { }
  
          }
  
      }

  I would like the button to allow me to add any number of gifs (like 5 or 10) all to the same area and have them being animated with their transparent showing what is under that gif.

  So for example I could have a circle image, then a spinning/loading transparent gif on top, and then a gif that counts up/down on top of that one to give me the effect of a count-down.

  Thanks for all the help !

• How to programmatically read an audio RTP stream using javacv and ffmpeg ?

  21 mai 2019, par Chris

  I am trying to read an audio RTP stream coming from ffmpeg in command line using javaCV. I create a DatagramSocket that listens to a specified port but can’t get the audio frames.

  I have tried with different types of buffer to play the audio to my speakers but I am getting a lot of "Invalid return value 0 for stream protocol" error messages with no audio in my speakers.

  I am running the following command to stream an audio file :

  ffmpeg -re -i /some/file.wav -ar 44100 -f mulaw -f rtp rtp ://127.0.0.1:7780

  And an excerpt of my code so far :

  public class FrameGrabber implements Runnable

  private static final TimeUnit SECONDS = TimeUnit.SECONDS;
  
  private InetAddress ipAddress;
  
  private DatagramSocket serverSocket;
  
  
  
  public FrameGrabber(Integer port) throws UnknownHostException, SocketException {
  
      super();
  
  
  
      this.ipAddress = InetAddress.getByName("192.168.44.18");
  
      serverSocket = new DatagramSocket(port, ipAddress);
  
  
  
  }
  
  
  
  public AudioFormat getAudioFormat() {
  
      float sampleRate = 44100.0F;
  
      // 8000,11025,16000,22050,44100
  
      int sampleSizeInBits = 16;
  
      // 8,16
  
      int channels = 1;
  
      // 1,2
  
      boolean signed = true;
  
      // true,false
  
      boolean bigEndian = false;
  
      // true,false
  
      return new AudioFormat(sampleRate, sampleSizeInBits, channels, signed, bigEndian);
  
  }
  
  
  
  @Override
  
  public void run() {
  
  
  
  
  
      byte[] buffer = new byte[2048];
  
      DatagramPacket packet = new DatagramPacket(buffer, buffer.length);
  
  
  
      DataInputStream dis = new DataInputStream(new ByteArrayInputStream(packet.getData(), packet.getOffset(), packet.getLength()));
  
  
  
  
  
      FFmpegFrameGrabber grabber = new FFmpegFrameGrabber(dis);
  
      grabber.setFormat("mulaw");
  
      grabber.setSampleRate((int) getAudioFormat().getSampleRate());
  
      grabber.setAudioChannels(getAudioFormat().getChannels());
  
  
  
      SourceDataLine soundLine = null;
  
  
  
  
  
      try {
  
          grabber.start();
  
  
  
  
  
          if (grabber.getSampleRate() > 0 && grabber.getAudioChannels() > 0) {
  
  
  
              AudioFormat audioFormat = new AudioFormat(grabber.getSampleRate(), 16, grabber.getAudioChannels(), true, true);
  
  
  
              DataLine.Info info = new DataLine.Info(SourceDataLine.class, audioFormat);
  
              soundLine = (SourceDataLine) AudioSystem.getLine(info);
  
              soundLine.open(audioFormat);
  
  
  
              soundLine.start();
  
          }
  
  
  
          ExecutorService executor = Executors.newSingleThreadExecutor();
  
  
  
  
  
          while (true) {
  
  
  
              try {
  
                  serverSocket.receive(packet);
  
              } catch (IOException e) {
  
                  e.printStackTrace();
  
              }
  
  
  
              Frame frame = grabber.grab();
  
  
  
              //if (frame == null) break;
  
  
  
  
  
              if (frame != null && frame.samples != null) {
  
  
  
                  ShortBuffer channelSamplesFloatBuffer = (ShortBuffer) frame.samples[0];
  
                  channelSamplesFloatBuffer.rewind();
  
  
  
                  ByteBuffer outBuffer = ByteBuffer.allocate(channelSamplesFloatBuffer.capacity() * 2);
  
                  float[] samples = new float[channelSamplesFloatBuffer.capacity()];
  
  
  
                  for (int i = 0; i < channelSamplesFloatBuffer.capacity(); i++) {
  
                      short val = channelSamplesFloatBuffer.get(i);
  
                      outBuffer.putShort(val);
  
                  }
  
  
  
                  if (soundLine == null) return;
  
                  try {
  
                      SourceDataLine finalSoundLine = soundLine;
  
                      executor.submit(() -> {
  
                          finalSoundLine.write(outBuffer.array(), 0, outBuffer.capacity());
  
                          outBuffer.clear();
  
                      }).get();
  
                  } catch (InterruptedException interruptedException) {
  
                      Thread.currentThread().interrupt();
  
                  }
  
              }
  
  
  
          }
  
  
  
          /*
  
          executor.shutdownNow();
  
          executor.awaitTermination(1, SECONDS);
  
  
  
          if (soundLine != null) {
  
              soundLine.stop();
  
          }
  
  
  
          grabber.stop();
  
          grabber.release();*/
  
  
  
          } catch (ExecutionException ex) {
  
          System.out.println("ExecutionException");
  
          ex.printStackTrace();
  
      } catch (org.bytedeco.javacv.FrameGrabber.Exception ex) {
  
          System.out.println("FrameGrabberException");
  
          ex.printStackTrace();
  
      } catch (LineUnavailableException ex) {
  
          System.out.println("LineUnavailableException");
  
          ex.printStackTrace();
  
      }/* catch (InterruptedException e) {
  
          System.out.println("InterruptedException");
  
          e.printStackTrace();
  
      }*/
  
  
  
  
  
  }
  
  
  
  public static void main(String[] args) throws SocketException, UnknownHostException {
  
      Runnable apRunnable = new FrameGrabber(7780);
  
      Thread ap = new Thread(apRunnable);
  
      ap.start();
  
  }

  At this stage, I am trying to play the audio file in my speakers but I am getting the following logs :

  Task :FrameGrabber.main()
  Invalid return value 0 for stream protocol
  Invalid return value 0 for stream protocol
  Input #0, mulaw, from ’java.io.DataInputStream@474e6cea’ :
  Duration : N/A, bitrate : 352 kb/s
  Stream #0:0 : Audio : pcm_mulaw, 44100 Hz, 1 channels, s16, 352 kb/s
  Invalid return value 0 for stream protocol
  Invalid return value 0 for stream protocol
  Invalid return value 0 for stream protocol
  Invalid return value 0 for stream protocol
  ...

  What am I doing wrong ?

  Thanks in advance !