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• exception on ffmpeg dll from a c++ visual studio 2015 project

  1er juillet 2017, par user1019140

  I want to use ffmpeg library in a Visual Studio project.
  I want to build an app for WIN32, so I downloaded :

  C:\Users\exa\Downloads\ffmpeg-3.3.2-win32-shared.zip
  
  C:\Users\exa\Downloads\ffmpeg-3.3.2-win32-dev.zip

  I copied the dlls from the shared zip to the same directory as my generated exe file. And I unzipped the dev zip into a directory of a different project of the same solution called MEDIA_IO.

  Then in the project properties , I added "additional include directories" :

  ..\MEDIA_IO\ffmpeg-3.3.2-win32-dev\include

  and under the linker, I added "Link library dependencies" :

  ..\MEDIA_IO\ffmpeg-3.3.2-win32-dev\lib

  and "Additional dependencies" :

  ..\MEDIA_IO\ffmpeg-3.3.2-win32-dev\lib\swscale.lib
  
  ..\MEDIA_IO\ffmpeg-3.3.2-win32-dev\lib\avutil.lib
  
  ..\MEDIA_IO\ffmpeg-3.3.2-win32-dev\lib\avcodec.lib
  
  ..\MEDIA_IO\ffmpeg-3.3.2-win32-dev\lib\avformat.lib
  
  ..\MEDIA_IO\ffmpeg-3.3.2-win32-dev\lib\avfilter.lib
  
  ..\MEDIA_IO\ffmpeg-3.3.2-win32-dev\lib\postproc.lib
  
  ..\MEDIA_IO\ffmpeg-3.3.2-win32-dev\lib\swresample.lib
  
  ..\MEDIA_IO\ffmpeg-3.3.2-win32-dev\lib\avdevice.lib

  I include the headers using :

  extern "C"
  
  {
  
  #include <libavcodec></libavcodec>avcodec.h>
  
  #include <libavformat></libavformat>avformat.h>
  
  #include <libavutil></libavutil>imgutils.h>
  
  #include <libavutil></libavutil>samplefmt.h>
  
  #include <libswscale></libswscale>swscale.h>
  
  #include <libavutil></libavutil>avstring.h>
  
  #include <libavutil></libavutil>intreadwrite.h>
  
  }

  The app compiles fine, but when running it, I’m getting exceptions on many different ffmpeg functions.

  For examples, when running :

  SwsContext * ctx = sws_getContext(560, 320, AV_PIX_FMT_YUV420P, 560,320, AV_PIX_FMT_RGB24, 0, NULL, NULL, NULL);

  I get exception :

  Exception thrown at 0x57E05140 (swscale-4.dll) in UnitTest1.exe: 0xC0000006: In page error executing location 0x57E05140 (status code 0xC0000008).
  
  Unhandled exception at 0x57E05140 (swscale-4.dll) in UnitTest1.exe: 0xC0000006: In page error executing location 0x57E05140 (status code 0xC0000008).

  It does not tell what are status codes 0xC0000006 and 0xC0000008.
  I dug a lot and could not find the source of the problem.

• Why is Visual Studio executing the wrong code [closed]

  15 mai 2023, par Jacob

  Not sure what is going on here. Code that I have deleted is still executing. I am sending parameters to FFMPEG for video editing. FFMPEG is then processing parameters that I previously sent, which is now deleted. While trying to figure this out, I sent the string "WTF !" directly to the FFMPEG parameters and FFMPEG is still processing the video with old parameters. The string "WTF !" should have broke FFMPEG so it is clearly executing the wrong code. Hasd anyone ever encountered this ?

  


• cant find out how to make auto exit with ffmpeg in visual studio

  27 juillet 2017, par Beni Blinches

  I have a process which is a song that is playing audio from youtube using ffmpeg, and I want the song to stop when its done. I have this function

  private Process CreateStream(string path)
  
  {
  
      Program.current_s = new Process();
  
      Program.current_s.Exited += new EventHandler(WhenSongEnds);
  
      Program.current_s.StartInfo = new ProcessStartInfo
  
      {
  
          FileName = "cmd.exe",
  
          Arguments = $"/C youtube-dl.exe -o - {path} | ffmpeg -i pipe:0 -ac 2 -f s16le -ar 48000 pipe:1",
  
          UseShellExecute = false,
  
          RedirectStandardOutput = true,
  
          CreateNoWindow = true
  
  
  
      };
  
      Console.WriteLine("                     ffmpeg is ready");
  
      Program.current_s.Start();
  
      return Program.current_s;
  
  }

  I tried to use autoexit and ffplay. But, I cant get it right, because I’m quite unfamiliar with the software