3
所以，我試圖讓一個項目，我正在寫反對的ffmpeg庫鏈接，但我一直得到了鏈接錯誤：ffmpeg的Windows庫不鏈接（visual studio）？
http://ffmpeg.zeranoe.com/builds/
：1>GLViewLASReader.obj : error LNK2001: unresolved external symbol "struct AVCodec * __cdecl avcodec_find_encoder(enum AVCodecID)" ([email protected]@[email protected]@[email protected]@@Z)
1>GLViewLASReader.obj : error LNK2001: unresolved external symbol "int __cdecl av_dict_set(struct AVDictionary * *,char const *,char const *,int)" ([email protected]@[email protected]@[email protected])
1>GLViewLASReader.obj : error LNK2001: unresolved external symbol "int __cdecl avcodec_encode_video(struct AVCodecContext *,unsigned char *,int,struct AVFrame const *)" ([email protected]@[email protected]@[email protected]@@Z)
1>GLViewLASReader.obj : error LNK2001: unresolved external symbol "struct AVCodecContext * __cdecl avcodec_alloc_context3(struct AVCodec const *)" ([email protected]@[email protected]@[email protected]@@Z)
1>GLViewLASReader.obj : error LNK2001: unresolved external symbol "struct AVFrame * __cdecl avcodec_alloc_frame(void)" ([email protected]@[email protected]@XZ)
1>GLViewLASReader.obj : error LNK2001: unresolved external symbol "void __cdecl av_free(void *)" ([email protected]@[email protected])
1>GLViewLASReader.obj : error LNK2001: unresolved external symbol "int __cdecl avcodec_open2(struct AVCodecContext *,struct AVCodec const *,struct AVDictionary * *)" ([email protected]@[email protected]@[email protected]@[email protected]@@Z)
1>GLViewLASReader.obj : error LNK2001: unresolved external symbol "int __cdecl avcodec_close(struct AVCodecContext *)" ([email protected]@[email protected]@@Z)
1>C:\STEAMiE\usr\modules\LASReader\win32\Release\LASReader.exe : fatal error LNK1120: 8 unresolved externals
我從下載的開發包
但是，當我像我通常會鏈接庫，我得到鏈接器錯誤。這個軟件包與我嘗試使用的其他庫不同，我只需要.h/.libs？爲什麼它必須這樣呢？
由於在鏈接器錯誤信息中函數標識符處沒有_前綴，我懷疑你忘記將你在'extern「C」{}'部分使用的ffmpeg包含文件。 – alexbuisson
嗯，就是這樣。我花了很多時間在這麼簡單的事情上。我會盡量記住下次。謝謝。 –