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goldendict-ng/website/docs/howto/how to build ffmpeg for visual studio.md

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Use vcpkg to build ffmpeg.

Steps:

  1. follow the instructions at https://trac.ffmpeg.org/wiki/CompilationGuide/vcpkg

  2. run the command

vcpkg.exe install ffmpeg[core,avcodec,avdevice,avfilter,avformat,speex,avresample,mp3lame,opus,sdl2,swresample,vorbis]:x64-windows-rel
  1. copy dll and libs in vcpkg\installed\x64-windows-rel to goldendict's winlibs\lib\msvc

Pros: Can be compiled with speex.

Alternative method

simply download ffmpeg from the official website: https://github.com/BtbN/FFmpeg-Builds/releases Then replace the dlls and libs in the winlibs\lib\msvc.

Cons: Seems to be missing libspeex or I just downloaded the wrong package.

Pros: Easy to manage.

I have tried the following methods without success

Use the scripts provided by the following url

https://github.com/Microsoft/FFmpegInterop/issues/67

https://github.com/Microsoft/FFmpegInterop

did not know how to link to libspeex.

conan

conan does not seem to have the libspeex option yet.

Links worth checking

https://stackoverflow.com/a/44556505/968188