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What i want to do is to make a sample application using msvc++ which will take input as a video file and decode it. I want all the decoding to be done using ffmpeg functions used in my application.I read dranger's tutorial but could not implement it, any help would be really appreciated.

aka.insane
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1 Answers1

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You have two options:

  1. you can build the source code yourself.
  2. you can download an "already builded version" with dlls.

If I were you, I would have chosen the second option. It was what I have had done when I started to experiencing with ffmpeg. Building can be a pain if you have never built a source code.

You can find latest ffmpeg builds from here (You should download the "dev" version).

Put this file inside VisualStudio20xx/Projects/yourProjectName/yourProjectName/

After downloading you should show MSVC the destination of headers & the .lib files. Go to Project -> Properties -> Configuration Properties -> C/C++ -> General then set the "Additional Include Directories" to ffmpeg/include

This should set the include files for ffmpeg.

For .lib files:

Project -> Properties -> Configuration Properties -> Linker -> General set "Additional Library Directories" to ffmpeg/lib

This should set the .lib files.

Now should be able to include ffmpeg libraries by

extern "C" 
{
     #include <libavcodec/avcodec.h>
}

*(!) If you get a thousands of LNK2001 linker errors after these steps, you should add some pragma comments for your includes. I am not %100 sure what do these comments do, you can search it. But it is something for MSVC to understand stuff.

For example,

#pragma comment (lib,"avcodec.lib")

this pragma comment too, should be in extern "C" scope.

*(!)If you get this compile error : 'UINT64_C': identifier not found

You can use this macro as a workaround:

#ifndef __STDC_CONSTANT_MACROS
#define __STDC_CONSTANT_MACROS
#endif

Now about the encode/decode stuff, you can check this question of mine which contains a code that

  1. demuxes the file into packets
  2. decodes the packets into frames
  3. encodes the frames into packages
  4. muxes packets into a file.

I learnt from hard way but the code is well-commented therefore I think you can understand what/how exactly it does to overcome the process.

Community
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epipav
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