Recherche avancée

Sur d’autres sites (11343)

• 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());
  
          }
  
      }
  
  }

• Running PowerShell command in Universal Windows Platform C#

  6 juin 2017, par stephen

  So I am trying to write a basic application to cut and export a subsection of a video. I have come across (and decided to use) the FFMPEG command line tools to do the cropping. This seemed straight forward (https://stackoverflow.com/a/5047426/6728859), but Universal Windows apps do not support System.Diagnostics.Process. Instead, it was suggested that they do support Powershell, which means I could do it by following (https://blogs.msdn.microsoft.com/kebab/2014/04/28/executing-powershell-scripts-from-c/). However, I get the following errors

  Cannot find type System.SystemException in module CommonLanguageRuntimeLibrary

  Cannot resolve Assembly or Windows Metadata file 'System.Configuration.Install.dll'

  From my limited understanding System.SystemException was removed in UWP, and I’m not sure where to find System.Configuration.Install.dll.

  Now to get PowerShell I had to include System.Management.Automation which I got from C:\Program Files (x86)\Reference Assemblies\Microsoft\WindowsPowerShell\3.0 which doesn’t seem correct to me, but I could be wrong.

  Is it possible to run commands in a UWP, or does anyone have any suggestions ?

• Pass camera input to ffmpeg

  30 mai 2017, par Sachin Sonone

  I am trying to develop an delphi app which will show a preview of the camera in the delphi form and then send the frames of video as images to the ffmpeg in the stdin of ffmpeg. ffmpeg then broadcast the video to wowza server over rtmp. but fmpeg gives an error ’pipe:0 Bad file descriptor’

      FFMPEG command:
  
      ffmpeg -f image2pipe -i pipe:0  -c:v libx264 -y -report -f flv wowza_url

  I followed this https://msdn.microsoft.com/en-us/library/ms682499(VS.85).aspx article to build the parent app which will open ffmpeg as a child and use FFmpeg’s stdin to pass input

     // Create a pipe for the child process's STDOUT.
  
  Createpipe(STDOut_ReadPipe, STDOut_WritePipe, @Security,0);
  
  
  
    // Ensure the read handle to the pipe for STDOUT is not inherited.
  
  SetHandleInformation(STDOut_ReadPipe,HANDLE_FLAG_INHERIT,0);
  
  
  
  // Create a pipe for the child process's STDIN.
  
  
  
  if (  CreatePipe(STDIn_ReadPipe , STDIn_WritePipe, @Security, 0) = true) then
  
  
  
  
  
  // Ensure the write handle to the pipe for STDIN is not inherited.
  
  
  
  SetHandleInformation(STDIn_WritePipe, HANDLE_FLAG_INHERIT, 0)  ;

  This the code to start ffmpeg process

  FillChar(StartupInfo,Sizeof(StartupInfo),0);
  
  StartupInfo.cb := Sizeof(StartupInfo);
  
  StartupInfo.dwFlags := STARTF_USESTDHANDLES;
  
  
  
  
  
  StartupInfo.wShowWindow := 1;
  
  S := args;
  
  UniqueString(S);
  
  
  
  StartupInfo.hStdError := STDOut_WritePipe;
  
  StartupInfo.hStdOutput := STDOut_WritePipe;
  
  StartupInfo.hStdInput := STDIn_ReadPipe;

  but as soon as program start ffmpeg exits with the error.

  This is the full console log of the ffmpeg

  ffmpeg started on 2017-05-30 at 18:45:36
  
  Report written to "ffmpeg-20170530-184536.log"
  
  Command line:
  
  "ffmpeg.exe" -f image2pipe -i pipe:0 -report -movflags +faststart -tune 
  
  zerolatency -an -pix_fmt yuv420p -preset ultrafast -vcodec libx264 -b:v 250k 
  
  -y -f flv test.flv
  
  ffmpeg version N-85750-ga75ef15 Copyright (c) 2000-2017 the FFmpeg 
  
  developers
  
   built with gcc 6.3.0 (GCC)
  
   configuration: --enable-gpl --enable-version3 --enable-cuda --enable-cuvid 
  
  --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc --enable-
  
  avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls 
  
  --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-
  
   libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-
  
    libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb 
  
    --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --
  
   enable-libopus --enable-librtmp --enable-libsnappy --enable-libsoxr --
  
    enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab 
  
   --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-
  
       libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-
  
     libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-zlib
  
    libavutil      55. 61.100 / 55. 61.100
  
    libavcodec     57. 93.100 / 57. 93.100
  
    libavformat    57. 72.101 / 57. 72.101
  
    libavdevice    57.  7.100 / 57.  7.100
  
    libavfilter     6. 88.100 /  6. 88.100
  
    libswscale      4.  7.101 /  4.  7.101
  
    libswresample   2.  8.100 /  2.  8.100
  
    libpostproc    54.  6.100 / 54.  6.100
  
    Splitting the commandline.
  
     Reading option '-f' ... matched as option 'f' (force format) with 
  
      argument 'image2pipe'.
  
     Reading option '-i' ... matched as input url with argument 'pipe:0'.
  
    Reading option '-report' ... matched as option 'report' (generate a 
  
    report) with argument '1'.
  
    Reading option '-movflags' ... matched as AVOption 'movflags' with 
  
    argument '+faststart'.
  
    Reading option '-tune' ... matched as AVOption 'tune' with argument 
  
    'zerolatency'.
  
     Reading option '-an' ... matched as option 'an' (disable audio) with 
  
     argument '1'.
  
     Reading option '-pix_fmt' ... matched as option 'pix_fmt' (set pixel 
  
     format) 
  
    with argument 'yuv420p'.
  
   Reading option '-preset' ... matched as AVOption 'preset' with argument 
  
   'ultrafast'.
  
   Reading option '-vcodec' ... matched as option 'vcodec' (force video codec 
  
  ('copy' to copy stream)) with argument 'libx264'.
  
    Reading option '-b:v' ... matched as option 'b' (video bitrate (please use -
  
   b:v)) with argument '250k'.
  
    Reading option '-y' ... matched as option 'y' (overwrite output files) 
  
   with 
  
   argument '1'.
  
   Reading option '-f' ... matched as option 'f' (force format) with argument 
  
  'flv'.
  
  Reading option 'test.flv' ... matched as output url.
  
   Finished splitting the commandline.
  
   Parsing a group of options: global .
  
    Applying option report (generate a report) with argument 1.
  
   Applying option y (overwrite output files) with argument 1.
  
   Successfully parsed a group of options.
  
   Parsing a group of options: input url pipe:0.
  
   Applying option f (force format) with argument image2pipe.
  
    Successfully parsed a group of options.
  
   Opening an input file: pipe:0.
  
   [pipe @ 003bdea0] Setting default whitelist 'crypto'
  
   [AVIOContext @ 03115e60] Statistics: 0 bytes read, 0 seeks
  
   pipe:0: Bad file descriptor'