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• Can't link FFMPEG dynamically to VS 2019 project

  10 février 2021, par Maya Sela

  I downloaded the source code of FFMPEG 3.4.8 and built with MSVC as such :
  
After unzipping, open x86_x64 Cross Tools Command Prompt for VS 2019 and run msys2_shell.cmd. From there, run
  
./configure --toolchain=msvc --arch=x86_64 --enable-yasm --enable-asm --enable-shared --disable-static
and
make

  
I then created a new project in VS 2019.
  
In Properties > C/C++ > General > Additional Include Directories :
  
(Where all the headers are)

  


  E:\ffmpeg-3.4.8\libavutil
E:\ffmpeg-3.4.8\libavcodec
E:\ffmpeg-3.4.8\libavdevice
E:\ffmpeg-3.4.8\libavfilter
E:\ffmpeg-3.4.8\libavresample
E:\ffmpeg-3.4.8\libpostproc
E:\ffmpeg-3.4.8\libswscale
E:\ffmpeg-3.4.8\libswresample
E:\ffmpeg-3.4.8\libavformat


  


  In Properties > Linker > General > Additional Library Directories :
  
(Where the .lib files are)

  


  E:\ffmpeg-3.4.8\libavutil
E:\ffmpeg-3.4.8\libavcodec
E:\ffmpeg-3.4.8\libavdevice
E:\ffmpeg-3.4.8\libavfilter
E:\ffmpeg-3.4.8\libavresample
E:\ffmpeg-3.4.8\libpostproc
E:\ffmpeg-3.4.8\libswscale
E:\ffmpeg-3.4.8\libswresample
E:\ffmpeg-3.4.8\libavformat


  


  In Properties > Linker > Input > Additional Dependencies :

  


  avcodec.lib
avdevice.lib
avfilter.lib
avformat.lib
swresample.lib
swscale.lib


  


  For good measure, I copied the .dll files of each library to the Release folder of the project. There is one source file I am trying to build and run :

  


  &#xA;extern "C" {&#xA;#include <libavformat></libavformat>avformat.h>&#xA;}&#xA;&#xA;int main() {&#xA;    AVFormatContext* pFormatContext = avformat_alloc_context();&#xA;}&#xA;

  


  The result is as follows :

  


  1>------ Build started: Project: FFMPEG_example, Configuration: Release x64 ------
1>Source.cpp
1>Source.obj : error LNK2001: unresolved external symbol avformat_alloc_context
1>C:\Users\maya.s\source\repos\FFMPEG_example\x64\Release\FFMPEG_example.exe : fatal error LNK1120: 1 unresolved externals
1>Done building project "FFMPEG_example.vcxproj" -- FAILED.
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========


  


  Does anyone have an idea ?
  
Thanks !

  


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• Is there way to compile ffmpeg in VS 2019 without (1) installing MSYS, (2) using assembler sources ? [duplicate]

  21 octobre 2023, par Tobic

  I want to compile ffmpeg in VS 2019 without installing additional components such as MSYS and assembler sources.
If I understand correctly, I have to install MSYS to do that and I would like not install it.

  


  Can I do it without MSYS - and if it is real, in what way ?
  
I have downloaded ffmpeg sources and the first step to install it - execute a file .\configure (bash script ?) that comes with ffmpeg.