Recherche avancée

Sur d’autres sites (11164)

• how to install and run phpize

  13 décembre 2016, par Hrishikesh Choudhari

  I have been meaning to install ffmpeg as an extension to my php setup. So before I can install it, I need to phpize it. I installed php5-dev by sudo apt-get install php5-dev But now when I run phpize I get the following error :

  phpize
  
  Cannot find config.m4. 
  
  Make sure that you run '/usr/bin/phpize' in the top level source directory of the module

  The location of my php.ini is /usr/local/zend/etc/php.ini

  From another online resource i tried this

  sudo apt-get install autoconf automake libtool m4

  But all of them are already installed.

  Locate config.m4 didnt return anything.

  Any pointers here how I can get phpize and thus, ffmpeg up and running ?

• ffmpeg running on windows with java

  24 décembre 2013, par Karn_way

  I have simple test class as

  public static void main(String[] args) throws IOException {
  
  
  
           String[] line = {"ffmpeg -i D:\\hadoop-video\\testVideo\\xyz.mp4 %d.png"};
  
           Runtime.getRuntime().exec(line);
  
  
  
      }

  when I try to run this I am getting

  Exception in thread "main" java.io.IOException: Cannot run program "ffmpeg -i D:/hadoop-video/testVideo/xyz.mp4 %d.png": CreateProcess error=2, The system cannot find the file specified
  
      at java.lang.ProcessBuilder.start(Unknown Source)
  
      at java.lang.Runtime.exec(Unknown Source)
  
      at java.lang.Runtime.exec(Unknown Source)
  
      at ImageTest.main(ImageTest.java:13)
  
  Caused by: java.io.IOException: CreateProcess error=2, The system cannot find the file specified

  however file is present on my windows7 machine with location

  D:\hadoop-video\testVideo\xyz.mp4

  i tried removing .mp4 and then run also not working . please suggest what might be wrong

• Receiving UDP streams on my web server

  25 novembre 2013, par user3032143

  I have a Winform C# Desktop application.

  This is my overall aim :

  I have a constant stream of images from which I acquire using a VLC wrapper receiving a RTSP stream from my IP camera.

  I am doing image processing on these separate jpegs and at the same time I am wanting to upload these jpegs to my web server so my User can view these streaming jpegs live a video.

  Now, I have accomplished this so far by uploading each jpeg to my server using a [Web method]. But, I am trying to push my knowledge to make it more efficient.

  Now, i know if I use a video encoder - like OGG (used because it is Open Source) I can use ffmpeg called from my client code using the Process class so to convert images to that video format.

  Doing this saves a lot of memory when comparing that 1 ogg file to the separate bytes added up in total from all the individual jpegs.

  These are the arguments I pass to ffmpeg to achieve that :

  -f image2 -r 10 -i {location of jpegs}+"\img%05d.jpg -crf 23  -y -r 10 -f outputfile.ogg

  Now, I could take this a step further and not output to a physical file but instead to the base stream of the Process class. I would use these arguments to accomplish that :

  -f image2 -r 10 -i {location of jpegs}+"\img%05d.jpg -crf 23  -y -r 10 -f ogg -

  and in my code I would get the memory stream like so :

  mStandardOutput = serverBuild.StandardOutput.BaseStream;
  
  mStandardOutput.BeginRead(mReadBuffer, 0, mReadBuffer.Length, StandardOutputReadCallback, null);
  
  serverBuild.WaitForExit();
  
  data = mStandardOutputMs.ToArray();
  
  mStandardOutput.Close();

  Now ultimately, I would like to replace :

  -i {location of jpegs}+"\img%05d.jpg

  with a constant flow of jpegs in a memory stream like so :

  ffmpeg -f mjpeg -i - -r 10 -c:v libtheora -q:v 7 -f ogg -

  .. by over-writing the stdin...

  But I have not done this yet because I want to 1st try getting the ogg to be received within my web server.

  From there I would extract the jpegs to be accessible somehow via my web application written in asp.net 4.0.

  But first thing is first I want to just see if I can receive the UDP stream from my client.
  So, I create a test C# application to open and listen write from the client stream..
  this is my code :

  Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
  
  public Form1()
  
  {
  
     InitializeComponent();
  
  
  
     socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
  
     string ip = "My Server IP Address";
  
     int port = 3000;
  
     socket.Bind(new IPEndPoint(IPAddress.Parse(ip), port));
  
  }
  
  
  
  private void button1_Click(object sender, EventArgs e)
  
  {
  
     try
  
     {
  
        var buffer = new byte[1024];
  
        while (true)
  
        {
  
           Application.DoEvents();
  
           int numBytesReceived = socket.Receive(buffer);
  
           if (numBytesReceived > 0)
  
           {
  
              File.WriteAllBytes("c:\\udp\\test.ogg", buffer);
  
           }
  
        }
  
     }
  
     catch (Exception _ex)
  
     {
  
        MessageBox.Show(_ex.ToString());
  
     }
  
  }

  But, I get this error :

  A message sent on a datagram socket was larger than the internal message buffer or some other network limit, or the buffer used to receive a datagram into was smaller than the datagram itself.

  What am I doing wrong please ?

  Thanks