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• Revision eeae6f946d : fix a problem where an invalid mv used in search The commit added reset of pred

  16 septembre 2013, par Yaowu Xu

  Changed Paths :
   Modify /vp9/encoder/vp9_encodeframe.c

  
   Modify /vp9/encoder/vp9_rdopt.c

  
  
  fix a problem where an invalid mv used in search

  The commit added reset of pred_mv at the beginning of each SB64x64
  partition mv search, also limited the usage of pred_mv only when
  search on the largest partition is already done. This is to fix
  a crash at speed 1/2 encoder where an invalid mv is used in mv
  search.

  Change-Id : I39010177da76d054e3c90b7899a44feb2e3a5b1b

• Revision db6ad0138c : Added stricter Q control flag. Added a variant of the one shot maxQ flag for tw

  26 février 2013, par Paul Wilkins

  Changed Paths : Modify /vp9/encoder/vp9_onyx_if.c Modify /vp9/encoder/vp9_onyx_int.h Modify /vp9/encoder/vp9_ratectrl.c Added stricter Q control flag. Added a variant of the one shot maxQ flag for two pass that forces a fixed Q for the normal inter frames. Disabled by default. Also small adjustment (...)

• How to solve Accord.Video.FFMPEG memory leak problem

  26 mai 2021, par mfwoo

  I am developing a digital billboard application that allow customer to click on the touch screen to go back and forth.

  


  Screen 0 -> touch -> Screen 1 -> touch -> Screen 2 -> time out -> Screen 0

  


  If no interaction happens Screen 0 will loop indefinitely. Every Screen is running its own MP4 file.

  


  However, for every running cycle of Screen 1, it gobbled up memory and in no time the application crash.

  


  Is it because of VideoFileSource's video object is not being dispose properly or because of some threading problem in video_NewFrame ?

  


  Because I get this error occasionally - "Invoke or BeginInvoke cannot be called on a control until the windows handle is created"

  


  I am using VS2017 .NET Framework 4.5 with Accord.Video.FFMPEG by Accord.NET version 3.8

  


  Screen 0 MP4 size - 5.5MB
Screen 1 MP4 size - 5.6MB
Screen 2 MP4 size - 7.0MB

  


  Here is my code :-
...

  


  Bitmap image;
VideoFileSource video;
int screenIdx = 0;
bool enableClicking = true;
bool isTimeOut = false;
string VideoPath = @"d:\KioskApp\Bkgrnd\"

public frmMain()
    {
        InitializeComponent(); 
        StartFirstScreen();
        tmrScreen01.Interval = 10000;
        tmrScreen02.Interval = 10000;
    }
    
     private void StartFirstScreen()
    {
        try
        {
            string fileName = VideoPath + Screen00();
            video = new VideoFileSource(fileName);
            video.PlayingFinished += new Accord.Video.PlayingFinishedEventHandler(video_Finished);
            video.NewFrame += new Accord.Video.NewFrameEventHandler(video_NewFrame);
            video.Start();
            screenIdx = 1;
        }
        catch (Exception ex)
        {
            string strErrMsg = strMsg + " - " + ex.Message;
            MessageBox.Show(strErrMsg);
        }
    }
    
    private void video_NewFrame(object sender, Accord.Video.NewFrameEventArgs eventArgs)
    {
        try
        {
            Invoke(new Action(() =>
            {
                System.Drawing.Image OldImage;
                OldImage = pictureBox1.Image;
                pictureBox1.Image = AForge.Imaging.Image.Clone(eventArgs.Frame);
                if (OldImage != null)
                    OldImage.Dispose();
            }));    
        }
        catch (Exception ex)
        {
            var strErrMsg = "video_NewFrame - " + ex.Message;
            MessageBox.Show(strErrMsg);
        }
    }
    
     private void video_Finished(object sender, Accord.Video.ReasonToFinishPlaying reason)
    {
        try
        {
            if (screenIdx == 1)
            {
                video.PlayingFinished -= video_Finished;
                video.NewFrame -= video_NewFrame;
                video = null;                    
                StartFirstScreen();
                return;
            }
            enableClicking = true;

        }
        catch (Exception ex)
        {
            var strErrMsg = "video_Finished - " + ex.Message;
            MessageBox.Show(strErrMsg);

        }
    }
    
    void startLastScreen()
    {
        string fileName = string.Empty;
        video.SignalToStop();
        fileName = VideoPath + Screen02();
        screenIdx = 0;
        if (object.ReferenceEquals(null, video))
        {
            video = new VideoFileSource(fileName);
        }
        else
        {
            video = null;
            video = new VideoFileSource(fileName);
        }

        video.PlayingFinished += new Accord.Video.PlayingFinishedEventHandler(video_Finished);
        video.NewFrame += new Accord.Video.NewFrameEventHandler(video_NewFrame);
        video.Start();
        enableClicking = false;
    }
    
    private void pictureBox1_Click(object sender, EventArgs e)
    {
        if (!enableClicking && screenIdx != 1) return;

        tmrScreen01.Stop();
        tmrScreen02.Stop();
        
        //  Check clickable area before allow to proceed to the next screen     
        string fileName = string.Empty;
        video.SignalToStop();
        video.Stop();

        if (screenIdx == 0)
        {
            fileName = VideoPath + Screen00();
            screenIdx = 1;
        }
        else if (screenIdx == 1)
        {
            fileName = VideoPath + Screen01();
            screenIdx = 2;
            
        }
        else if (screenIdx == 2)
        {
            fileName = VideoPath + Screen02();
            screenIdx = 0;
           
        }

        if (object.ReferenceEquals(null, video))
        {
            video = new VideoFileSource(fileName);
        }
        else
        {
            video = null;
            video = new VideoFileSource(fileName);
        }
        video.PlayingFinished += new Accord.Video.PlayingFinishedEventHandler(video_Finished);
        video.NewFrame += new Accord.Video.NewFrameEventHandler(video_NewFrame);
        enableClicking = false;
        isTimeOut = false;
        video.Start();
    }


  


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