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• Could not load file or assembly 'Accord.Video.FFMPEG.dll' or one of its dependencies on Click Once Install

  10 mai 2023, par HighwayRob

  My application that has 'Accord.Video.FFMPEG.dll' and supporting DLL's works properly in the development environment. When I publish and try to Click Once install I receive the following message :
Could not load file or assembly 'Accord.Video.FFMPEG.dll' or one of its dependencies. The specified module could not be found.
File name : 'Accord.Video.FFMPEG.dll'

  


  As suggested in other posts, I copied the following DLL's into my Resources folder in my Visual Studio Project and specified to 'always copy to installation folder'. I see them in the Install Folder inside the folder C :\JPGManagerPublish\Application f
Files\JPGManager_3_0_0_179\Resources

  


  avcodec-57.dll
avdevice-57.dll
avfilter-6.dll
avformat-6.dll
avformat-57.dll
avutil-55.dll
postproc-54.dll
swresample-2.dll
swscale-4.dll

  


  These show up in the application install folder as
avcodec.57.dll.deploy, etc.

  


  I install the application with Setup and I when I execute the function that utilizes Accord.Video.FFMPEG.dll I get the error message :
'Accord.Video.FFMPEG.dll' or one of its dependencies. The specified module could not be found.
File name : 'Accord.Video.FFMPEG.dll'


  


• how to resolve Accord.Video.FFMPEG error Rational is defined in an assembly that is not referenced

  18 janvier 2023, par HighwayRob

  I have developed a visual studio c# Windows app that I want to use Accord.Video.FFMPEG.DLL to merge JPGs into a video file.

  


  I added the reference to the DLL and the following code :


  


   using Accord.Video.FFMPEG;

private void videoTestBttn_Click(object sender, EventArgs e)
{
    int width = 320;
    int height = 240;
    Bitmap bitmap;

    // create instance of video writer
    VideoFileWriter writer = new VideoFileWriter();
    // create new video file
    writer.Open("c:\\test.avi", width, height, 25, VideoCodec.MPEG4);
    // create a bitmap to save into the video file
    Bitmap image = new Bitmap(width, height, PixelFormat.Format24bppRgb);
    // write 1000 video frames
    for (int i = 0; i < 100; i++)
    {
        image.SetPixel(i % width, i % height, Color.Red);
        bitmap = new Bitmap(ffiles[i, 0].ToString());
        writer.WriteVideoFrame(bitmap);
        bitmap.Dispose();
    }
    writer.Close();

}


  


  I get the following error in the build on the 'writer.Open' line of code :

  


  Error CS0012 The type 'Rational' is defined in an assembly that is not referenced. You must add a reference to assembly 'Accord, Version=3.8.0.0, Culture=neutral, PublicKeyToken=fa1a88e29555ccf7'.

  


  Downloaded DLL from https://nuget.info/packages/Accord.Video.FFMPEG/3.8.2-alpha

  


  How and where to I add this reference ?
Looking forward to some assistance !

  


• Accord.Video.FFMPEG getting error for long video

  30 novembre 2022, par wahyu

  I use Accord.Video.FFMPEG to extract images every 10 frames from a video. Total frames for this video is 38194 frames. First run is good, I can save image every 10 frames but after run of about 38185 frames i got null return from this code Bitmap bmpBaseOriginal = vReader.ReadVideoFrame();, if I see in the video there is no problem at the end of video.

  


  I do something like this

  


  using (var vReader = new VideoFileReader())
{
    vReader.Open(files[0]);
    TotalFrame = vReader.FrameCount;
    countin = Convert.ToInt32(TotalFrame / Convert.ToDouble(countAsset));
    Fps = vReader.FrameRate.Value;                                
    int a = 0;
    for (int i = 0; i < vReader.FrameCount; i++)
    {
         if(i < vReader.FrameCount - 1)
         {
              Bitmap bmpBaseOriginal = vReader.ReadVideoFrame();
              if (i%10 == 0)
              {
                  a++;
                  bmpBaseOriginal.Save(string.Format("{0}\\{1}.jpeg", dirVideo.FullName, a), ImageFormat.Jpeg);
              }
              bmpBaseOriginal.Dispose();
         }
         else
         {
              a++;
              Bitmap bmpBaseOriginal = vReader.ReadVideoFrame();
              bmpBaseOriginal.Save(string.Format("{0}\\{1}.jpeg", dirVideo.FullName, a), ImageFormat.Jpeg);
              bmpBaseOriginal.Dispose();
         }
    }
    vReader.Close();
}


  


  this problem occurs again on another video if the video has a lot of frames, but no problem if the video has a less frames.

  


  How to solve it ?