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• Android NDK : java.lang.UnsatisfiedLinkError : dlopen failed : cannot locate symbol (FFMPEG)

  3 février 2017, par S. Le Galloudec

  I have the exact same error as Android NDK : Getting java.lang.UnsatisfiedLinkError : dlopen failed : cannot locate symbol "signal" referenced by "libffmpeg.so"

  The solutions looks easy, but the fact is that i’m using cmake instead of android.mk

  Do you know if there is any equivalent of "APP_PLATFORM :" for cmake ?

  Or if i can use a cmakelist and an android.mk ? (i know it’s not recommended)

  EDIT :

  I have found this : https://developer.android.com/ndk/guides/cmake.html

  But i still have an error :

  Could not find method arguments() for arguments [-DAPP_PLATFORM=android-11] on object of type com.android.build.gradle.internal.dsl.CmakeOptions.

  Anyone can help ?

  EDIT N°2 :

  After putting this in my graddle.app :

  arguments "-DANDROID_PLATFORM=android-11"

  The error in my title came back. I’m pretty lost

  Best regards

• Problem with Linking FFMPEG Libraries in Visual Studio on Windows 10 [closed]

  14 mars 2024, par Dentricky73

  I'm facing an issue while trying to link FFMPEG libraries in Visual Studio on a Windows 10 OS. Specifically, Visual Studio seems to locate the headers correctly, but encounters difficulties in finding the associated libraries. Initially, I attempted to compile the FFMPEG SDK myself, but encountered problems with the library extensions, which ended with a Linux .o file instead of a Windows .lib. Subsequently, I downloaded a prebuilt version from here, but I'm still encountering errors.

  


  In Visual Studio 2022, I've configured the following settings :

  


  


  Property > Configuration Properties > C/C++ > General > Additional Include Directories
C :\cmder\c++SDK\ffmpeg\include

  


  


  


  Property > Configuration Properties > Linker > General > Additional Library Directories
C :\cmder\c++SDK\ffmpeg\lib

  


  


  


  Property > Configuration Properties > Linker > Input > Additional Dependencies
avcodec.lib, avdevice.lib, avfilter.lib, avformat.lib, avutil.lib, postproc.lib, swresample.lib, swscale.lib

  


  


  Despite these configurations, Visual Studio fails to locate the FFMPEG libraries during the linking process. Could someone please provide guidance on how to resolve this issue and correctly link the FFMPEG libraries in Visual Studio on Windows ? Any help or insights would be greatly appreciated.

  


  Specific Issues Encountered :

  


  During the compilation and linking process in Visual Studio 2022, I encountered the following errors :

  


  Error 1 : A value of type "const AVCodec *" cannot be used to initialize an entity of type "AVCodec *".
Error 2 : Identifier "av_free_packet" is undefined.
Error 3 : Class "AVStream" has no member "codec".
Error 4 : Class "AVFrame" has no member "owner".
Despite configuring the project settings to include the correct include directories and library dependencies, these errors persist.

  


  Why Previous Attempts Didn't Meet My Needs :

  


  My previous attempts to resolve these issues were unsuccessful because I couldn't pinpoint the root cause of the compilation and linking errors. While I ensured that the include directories and library dependencies were correctly configured in Visual Studio, the errors persisted, indicating that there may be underlying issues with the setup or compatibility between the FFMPEG SDK and Visual Studio environment.

  


• Merge pull request #26 from loris/patch-1

  8 septembre 2012, par Scott Schiller

  m script/soundmanager2.js Merge pull request #26 from loris/patch-1 Update buffered property for consistency