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• Revision 88250 : - quand un gravatar existe le supprimer de vide.txt - si gravatar.com ...

  27 mars 2015, par cedric@… — Log

   quand un gravatar existe le supprimer de vide.txt
   si gravatar.com ne repond pas mais qu’un gravatar est en cache on le touch pour le prolonger et on met un lock pour stopper les requetes 24h

• Why when recording video using ffmpeg command line when playing the video it's running very fast ?

  31 mai 2013, par Revuen Ben Dror

  This is my code in Form1 :

  private void StartRecording_Click(object sender, EventArgs e)
  
          {
  
  
  
              ffmp.Start("test.avi", 25);
  
              timer1.Enabled = true;
  
          }

  The timer tick event :

  private void timer1_Tick(object sender, EventArgs e)
  
          {
  
              using (bitmap = (Bitmap)ScreenCapture.CaptureScreen(true))//(Bitmap)ScreenCapture.CaptureScreen(true))
  
              {
  
              ffmp.PushFrame(bitmap);
  
              }  
  
  
  
          }

  Then the code in the ffmpeg class i did :

  namespace ScreenVideoRecorder
  
  {
  
      class Ffmpeg
  
      {
  
          NamedPipeServerStream p;
  
          String pipename = "mytestpipe";
  
          byte[] b;
  
          //int i, j;
  
          System.Diagnostics.Process process;
  
          //IAsyncResult ar;
  
  
  
          public Ffmpeg()
  
          {
  
  
  
          }
  
  
  
          public void Start(string FileName, int BitmapRate)
  
          {
  
              p = new NamedPipeServerStream(pipename, PipeDirection.Out, 1, PipeTransmissionMode.Byte);
  
              b = new byte[1920 * 1080 * 3]; // some buffer for the r g and b of pixels of an image of size 720p 
  
              process = new System.Diagnostics.Process();
  
              //process.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
  
              process.StartInfo.FileName = @"D:\pipetest\pipetest\ffmpegx86\ffmpeg.exe";
  
              process.EnableRaisingEvents = false;
  
              process.StartInfo.WorkingDirectory = @"D:\pipetest\pipetest\ffmpegx86";
  
              process.StartInfo.Arguments = @"-f rawvideo -pix_fmt bgr0 -video_size 1920x1080 -i \\.\pipe\mytestpipe -map 0 -c:v libx264 -r " + BitmapRate + " " + FileName;
  
              process.Start();
  
              process.StartInfo.UseShellExecute = false;
  
              process.StartInfo.CreateNoWindow = false;
  
              //ar = p.BeginWaitForConnection(EndWait,null);
  
              p.WaitForConnection();
  
          }
  
  
  
          public void PushFrame(Bitmap bmp)
  
          {
  
  
  
              int length;
  
              // Lock the bitmap's bits.
  
              //bmp = new Bitmap(1920, 1080);
  
              Rectangle rect = new Rectangle(0, 0, bmp.Width, bmp.Height);
  
              //Rectangle rect = new Rectangle(0, 0, 1280, 720);
  
              System.Drawing.Imaging.BitmapData bmpData =
  
                  bmp.LockBits(rect, System.Drawing.Imaging.ImageLockMode.ReadOnly,
  
                  bmp.PixelFormat);
  
  
  
              int absStride = Math.Abs(bmpData.Stride);
  
              // Get the address of the first line.
  
              IntPtr ptr = bmpData.Scan0;
  
  
  
              // Declare an array to hold the bytes of the bitmap.
  
              //length = 3 * bmp.Width * bmp.Height;
  
              length = absStride * bmpData.Height;
  
              byte[] rgbValues = new byte[length];
  
  
  
              //Marshal.Copy(ptr, rgbValues, 0, length);
  
              int j = bmp.Height - 1;
  
              for (int i = 0; i < bmp.Height; i++)
  
              {
  
                  IntPtr pointer = new IntPtr(bmpData.Scan0.ToInt32() + (bmpData.Stride * j));
  
                  System.Runtime.InteropServices.Marshal.Copy(pointer, rgbValues, absStride * (bmp.Height - i - 1), absStride);
  
                  j--;
  
              }
  
  
  
              p.Write(rgbValues, 0, length);
  
  
  
              bmp.UnlockBits(bmpData);

  The ffmpeg command line is :

  process.StartInfo.Arguments = @"-f rawvideo -pix_fmt bgr0 -video_size 1920x1080 -i \\.\pipe\mytestpipe -map 0 -c:v libx264 -r " + BitmapRate + " " + FileName;

  And i checked with a breakpoint and saw that the variable BitmapRate is 25 .
  And the timer interval is 40 .

  So it should fit for 25 frames per seconds.
  But when i'm running the video file using MPC Media Player Class everything in the video is running very fast. I mean the video is 2,326KB size the video Length is 16 seconds .

  And everything in the video seems to mvoe very fast if i opend a new window or dragged a window somewhere in the screen i see it moving very fast and as it i moved and did everything in real .

  I see on the video file details that : length 16 seconds. 1920x1080 and 25 frames per second.

  So where is the problem ? i can't figure out.

• iFrameExtractor EXC_BAD_ACCESS

  3 novembre 2013, par Destiny Dawn

  When using the iFrameExtractor for iOS I have been getting the "EXC_BAD_ACCESS(code=1,address=0x8) error on this line :

  - (AVPacket*)readPacket {
  
  
  
      if (_currentPacket.size > 0 || _inBuffer) return &_currentPacket;
  
  
  
      NSMutableData *packetData = [audioPacketQueue objectAtIndex:0];
  
      _packet = [packetData mutableBytes];
  
  
  
      // NSLog(@"got audio stream");
  
      **if (_packet->dts != AV_NOPTS_VALUE) {**
  
          _packet->dts += av_rescale_q(0, AV_TIME_BASE_Q, _audioStream->time_base);
  
      }
  
      if (_packet->pts != AV_NOPTS_VALUE) {
  
          _packet->pts += av_rescale_q(0, AV_TIME_BASE_Q, _audioStream->time_base);
  
      }
  
      // NSLog(@"ready with audio");
  
  
  
  
  
      [audioPacketQueueLock lock];
  
      audioPacketQueueSize -= _packet->size;
  
      [audioPacketQueue removeObjectAtIndex:0];
  
      [audioPacketQueueLock unlock];
  
  
  
  
  
  
  
      _currentPacket = *(_packet);
  
  
  
      return &_currentPacket;   
  
  }