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• Could not load or assembly or one of its dependencies

  29 juin 2017, par Prathibha Chiranthana

  I am using Aforge.net frame work for doing image processing work.
  I have add ’AForge.Video.FFMPEG.dll’ as a referance to my project.
  I am using VS2012 and 32 bit build target.
  When Buiding i get

   System.IO.FileNotFoundException was unhandled
  
    HResult=-2147024770
  
    Message=Could not load file or assembly 'AForge.Video.FFMPEG.dll' or one of its dependencies. The specified module could not be found.
  
    Source=VideoReadere
  
    FileName=AForge.Video.FFMPEG.dll
  
    FusionLog=""
  
    StackTrace:
  
         at VideoReadere.Form1..ctor()
  
         at VideoReadere.Program.Main() in c:\Users\Prabad\Documents\Visual Studio 2012\Projects\VideoReadere\VideoReadere\Program.cs:line 19
  
         at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
  
         at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
  
         at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
  
         at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
  
         at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
  
         at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
  
         at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
  
         at System.Threading.ThreadHelper.ThreadStart()
  
    InnerException: 

  my code for that is occur exception

   using System;
  
  using System.Collections.Generic;
  
  using System.Linq;
  
  using System.Threading.Tasks;
  
  using System.Windows.Forms;
  
  
  
  namespace VideoReadere
  
  {
  
      static class Program
  
      {
  
          /// <summary>
  
          /// The main entry point for the application.
  
          /// </summary>
  
          [STAThread]
  
          static void Main()
  
          {
  
              Application.EnableVisualStyles();
  
              Application.SetCompatibleTextRenderingDefault(false);
  
  //here below line give exception
  
              Application.Run(new Form1());
  
          }
  
      }
  
  }

• Could not load or assembly or one of its dependencies

  24 mars 2017, par Prathibha Chiranthana

  I am using Aforge.net frame work for doing image processing work.
  I have add ’AForge.Video.FFMPEG.dll’ as a referance to my project.
  I am using VS2012 and 32 bit build target.
  When Buiding i get

   System.IO.FileNotFoundException was unhandled
  
    HResult=-2147024770
  
    Message=Could not load file or assembly 'AForge.Video.FFMPEG.dll' or one of its dependencies. The specified module could not be found.
  
    Source=VideoReadere
  
    FileName=AForge.Video.FFMPEG.dll
  
    FusionLog=""
  
    StackTrace:
  
         at VideoReadere.Form1..ctor()
  
         at VideoReadere.Program.Main() in c:\Users\Prabad\Documents\Visual Studio 2012\Projects\VideoReadere\VideoReadere\Program.cs:line 19
  
         at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
  
         at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
  
         at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
  
         at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
  
         at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
  
         at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
  
         at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
  
         at System.Threading.ThreadHelper.ThreadStart()
  
    InnerException: 

  my code for that is occur exception

   using System;
  
  using System.Collections.Generic;
  
  using System.Linq;
  
  using System.Threading.Tasks;
  
  using System.Windows.Forms;
  
  
  
  namespace VideoReadere
  
  {
  
      static class Program
  
      {
  
          /// <summary>
  
          /// The main entry point for the application.
  
          /// </summary>
  
          [STAThread]
  
          static void Main()
  
          {
  
              Application.EnableVisualStyles();
  
              Application.SetCompatibleTextRenderingDefault(false);
  
  //here below line give exception
  
              Application.Run(new Form1());
  
          }
  
      }
  
  }

• Covert opengl framebuffer into ffmpeg encoded mp4 c++ [closed]

  14 mai 2022, par user19068953

  I want to make a program that takes an mp4 file as an input and draws something on top of it then gives the new video as an output. So far I have a program that takes a file name, have ffmpeg decode it and draw whatever i want with opengl (I have followed this tutorial that draws on top of the video separately : https://gist.github.com/hradec/a8b8ae0bf82891a5d853b06619839d9d) and have an opengl framebuffer. My question is how do put opengl's framebuffer on top of ffmpeg frames and generate a new video with it then give a new file as an output ? The framebuffer is allocated in fbo, so i want to encode it to ffmpeg, something like

  


   av_write_frame(state->fmt_ctx, &fbo) 


  


  is there a function like this that allows me to write frame data into a newly created video ?

  


  Here is my encoder :

  


      int VideoDecoder::write_frame()
{
    // Find a way to write OpenGL Frames here.
    av_packet_rescale_ts(&state->packet, VideoSt.Ctx->time_base, VideoSt.Stream->time_base);
    state->packet.stream_index = VideoSt.Stream->index;
    return av_interleaved_write_frame(state->fmt_ctx, &state->packet);
}


bool VideoDecoder::encode_video()
{

    // TODO: This is horrible fix this function.

    state->packet = { nullptr };
    av_init_packet(&state->packet);

    fflush(stdout);

    IMG_Buffer.SetNum(ColorBuffer.Num() * 4);
    uint8* DestPtr = nullptr;
    for (auto i = 0; i < ColorBuffer.Num(); i++)
    {
        DestPtr = &IMG_Buffer[i * 4];
        auto SrcPtr = ColorBuffer[i];
        *DestPtr++ = SrcPtr.R;
        *DestPtr++ = SrcPtr.G;
        *DestPtr++ = SrcPtr.B;
        *DestPtr++ = SrcPtr.A;
    }

    uint8* inData[1] = { IMG_Buffer.GetData() };


    sws_scale(SwsCtx, inData, InLineSize, 0, VideoSt.Ctx->height, VideoSt.Frame->data, VideoSt.Frame->linesize);

    VideoSt.Frame->pts = VideoSt.NextPts++;
    if (FFmpegEncode(VideoSt.Frame) < 0)
        return false;

    auto ret = WriteFrame();

    if (ret < 0)
    {
        auto errstr = FString(av_err2str(ret));
    }
    av_packet_unref(&state->packet);


    GotOutput = 0;
    auto ret = avcodec_send_frame(VideoSt.Ctx, frame);
    if (ret < 0 && ret != AVERROR_EOF) {
        auto errstr = FString(av_err2str(ret));
        return -1;
    }

    ret = avcodec_receive_packet(VideoSt.Ctx, &Pkt);
    if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
        return 0;

    if (ret < 0)
    {
        auto errstr = FString(av_make_error_string(ret).c_str());
        av_packet_unref(&Pkt);
        return -1;
    }

    GotOutput = 1;
    return 0;


    for (GotOutput = 1; GotOutput; count++)
    {
        fflush(stdout);

        FFmpegEncode(nullptr);

        if (GotOutput)
        {
            auto ret = WriteFrame(false);
            if (ret < 0)
            {
                auto errstr = FString(av_err2str(ret));
            }
            av_packet_unref(&Pkt);
        }
    }

    auto ret = av_write_trailer(FmtCtx);
    if (ret < 0)
    {
        auto errstr = FString(av_err2str(ret));
    }
}


  


  and here is my simple frame buffer :

  


  bool OpenGLRenderer::alloc_frame_buffer()
{
    unsigned int fbo;
    glGenFramebuffers(1, &fbo);

    if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) return false;

    glBindFramebuffer(GL_FRAMEBUFFER, fbo);

    unsigned int texture;
    glGenTextures(1, &texture);
    glBindTexture(GL_TEXTURE_2D, texture);

    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 800, 600, 0, GL_RGB, GL_UNSIGNED_BYTE, NULL);

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);

    glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture, 0);
}