[Ffmpeg-devel] Visual studio .net problem

Michel Bardiaux mbardiaux
Wed Sep 28 11:48:59 CEST 2005

Lucio Marcenaro wrote:
> I just installed Visual C++ 2005 Express edition beta 2 but i still have 
> the same problem (ffmpeg not working properly with dlls: codec not foud 
> error)
> So i was wondering that maybe my mingw environment is the problem...
> Could somebody (that uses ffmpeg dll with visual studio compiled apps) 
> post the list of files downoaded and installed for mingw/msys environment?
> Thanks
>     Lucio

I suggest you start peppering the libavcodec code with av_log calls, to 
trace what happens (since unfortunately the VC++ debugger wont work on 
gcc code and vice-versa, IIRC). After all, that's why it is *good* to 
have the source...

> Lucio Marcenaro wrote:
>>> Hm... so you have them installed somewhere else on your search path? 
>>> Otherwise, I'd say you aren't linking properly to the DLLs.
>> i have ffmpeg stuff in my project dir:
>> myprojectdir\
>>     \include\ffmpeg
>>     \lib (contains av*.lib)
>>     \bin (contains av*.dll and .exe)
>> then i add directory myprojectdir\include\ffmpeg and myprojectdir\lib 
>> in visual studio options as additional directories for include and lib 
>> files respectively
>>> Are your import libraries being generated correctly? Do you have the 
>>> Microsoft link.exe on your path when you build FFmpeg, and do you see 
>>> output from link.exe during the build process?
>> i think so....
>> i mean, if i run msys window and type link.exe it gives me
>> Microsoft (R) Incremental Linker Version 7.10.3077
>> Copyright (C) Microsoft Corporation.  All rights reserved.
>> usage etc etc
>> lib files are
>> avcodec.lib (137.912 bytes)
>> avformat.lib (188.028 bytes)
>> avutil.lib (5.994 bytes)
>> mingw make should generate lib dll and everything i need? is it correct?
>> no need to run stuff like dlltool.exe manually, right?
>> Many thanks!

Michel Bardiaux
R&D Director
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