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• building ffmpeg 2.1.8 with MSVC2013 (configure produces errors)

  29 juin 2017, par scaram

  I am trying to build ffmpeg 2.1.8 for a legacy project. I use windows 10, MSVC 2013, MSYS, YASM and this tutorial.

  After

  ./configure --toolchain=msvc --enable-shared

  I see the many errors in config.log, here the first three ones

  1. error : ’test’ declared as an array with a negative size
  2. fatal error C1189 : #error : "unsatisfied condition : defined GLIBC"
  3. fatal error C1083 : File (Include) cannot be opened : "newlib.h" : No such file or directory

  here the more detailed information...

  C:/Users/scaram/AppData/Local/Temp/ffconf.LgAWDJFi.o_preprocessed.c:8859:27: error: 'test' declared as an array with a negative size
  
  ffconf.LgAWDJFi.o_converted.c
  
  C:/Users/scaram/AppData/Local/Temp/ffconf.RncapARb.c(1) : error C2118: Negativer Index
  
  check_cpp_condition features.h defined __UCLIBC__
  
  check_cpp
  
  BEGIN /tmp/ffconf.RncapARb.c
  
      1   #include 
  
      2   #if !(defined __UCLIBC__)
  
      3   #error "unsatisfied condition: defined __UCLIBC__"
  
      4   #endif
  
  END /tmp/ffconf.RncapARb.c
  
  c99wrap cl -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -nologo -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64 -P -Fi /tmp/ffconf.LgAWDJFi.o /tmp/ffconf.RncapARb.c
  
  ffconf.RncapARb.c
  
  C:/Users/scaram/AppData/Local/Temp/ffconf.RncapARb.c(3) : fatal error C1189: #error :  "unsatisfied condition: defined __UCLIBC__"
  
  check_cpp_condition features.h defined __GLIBC__
  
  check_cpp
  
  BEGIN /tmp/ffconf.RncapARb.c
  
      1   #include 
  
      2   #if !(defined __GLIBC__)
  
      3   #error "unsatisfied condition: defined __GLIBC__"
  
      4   #endif
  
  END /tmp/ffconf.RncapARb.c
  
  c99wrap cl -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -nologo -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64 -P -Fi /tmp/ffconf.LgAWDJFi.o /tmp/ffconf.RncapARb.c
  
  ffconf.RncapARb.c
  
  C:/Users/scaram/AppData/Local/Temp/ffconf.RncapARb.c(3) : fatal error C1189: #error :  "unsatisfied condition: defined __GLIBC__"
  
  check_cpp_condition newlib.h defined _NEWLIB_VERSION
  
  check_cpp
  
  BEGIN /tmp/ffconf.RncapARb.c
  
      1   #include 
  
      2   #if !(defined _NEWLIB_VERSION)
  
      3   #error "unsatisfied condition: defined _NEWLIB_VERSION"
  
      4   #endif
  
  END /tmp/ffconf.RncapARb.c
  
  c99wrap cl -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -nologo -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64 -P -Fi /tmp/ffconf.LgAWDJFi.o /tmp/ffconf.RncapARb.c
  
  ffconf.RncapARb.c
  
  C:/Users/scaram/AppData/Local/Temp/ffconf.RncapARb.c(1) : fatal error C1083: File (Include) cannot be opened: "newlib.h": No such file or directory
  
  check_header _mingw.h
  
  check_cpp
  
  BEGIN /tmp/ffconf.RncapARb.c
  
      1   #include <_mingw.h>
  
      2   int x;
  
  END /tmp/ffconf.RncapARb.c

  What can I do to make it work ?

• 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 ?