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Sur d’autres sites (4602)

  • ffmpeg static link in Visual Studio [duplicate]

    24 avril 2019, par iz25

    This question already has an answer here :

    I have build ffmpeg static library on Windows. It seems that everything completed with success. The result of build are following files :

    libavcodec.a
    
libavdevice.a
    
libavfilter.a
    
libavformat.a
    
libavutil.a
    
libswscale.a

    I tried to specify above files in Linker->Input in my C++ libray project, but linking fails. Following is build output :

    1>libavutil.a(samplefmt.o) : error LNK2001: unresolved external symbol ___stdio_common_vsprintf
    
1>libavutil.a(error.o) : error LNK2001: unresolved external symbol ___stdio_common_vsprintf
    
1>libavutil.a(log.o) : error LNK2001: unresolved external symbol ___stdio_common_vsprintf
    
1>libavutil.a(utils.o) : error LNK2001: unresolved external symbol ___stdio_common_vsprintf
    
1>libavutil.a(avstring.o) : error LNK2001: unresolved external symbol ___stdio_common_vsprintf
    
1>libavutil.a(bprint.o) : error LNK2001: unresolved external symbol ___stdio_common_vsprintf
    
1>libavformat.a(id3v2.o) : error LNK2001: unresolved external symbol ___stdio_common_vsprintf
    
1>libavutil.a(opt.o) : error LNK2001: unresolved external symbol ___stdio_common_vsprintf
    
1>libavutil.a(dict.o) : error LNK2001: unresolved external symbol ___stdio_common_vsprintf
    
1>libavutil.a(pixdesc.o) : error LNK2001: unresolved external symbol ___stdio_common_vsprintf
    
1>libavcodec.a(ratecontrol.o) : error LNK2001: unresolved external symbol ___stdio_common_vsprintf
    
1>libavcodec.a(qsv.o) : error LNK2001: unresolved external symbol ___stdio_common_vsprintf
    
1>libavformat.a(utils.o) : error LNK2001: unresolved external symbol ___stdio_common_vsprintf
    
1>libavformat.a(aviobuf.o) : error LNK2001: unresolved external symbol ___stdio_common_vsprintf
    
1>libavcodec.a(utils.o) : error LNK2001: unresolved external symbol ___stdio_common_vsprintf
    
1>libavcodec.a(ffv1enc.o) : error LNK2001: unresolved external symbol ___stdio_common_vsprintf
    
1>libavcodec.a(libvpxenc.o) : error LNK2001: unresolved external symbol ___stdio_common_vsprintf
    
1>libavcodec.a(exif.o) : error LNK2001: unresolved external symbol ___stdio_common_vsprintf
    
1>libavcodec.a(libvpxenc.o) : error LNK2001: unresolved external symbol _vpx_img_wrap
    
1>libavcodec.a(libvpxenc.o) : error LNK2001: unresolved external symbol _vpx_codec_version_str
    
1>libavcodec.a(libvpxdec.o) : error LNK2001: unresolved external symbol _vpx_codec_version_str
    
1>libavcodec.a(libvpxenc.o) : error LNK2001: unresolved external symbol _vpx_codec_build_config
    
1>libavcodec.a(libvpxdec.o) : error LNK2001: unresolved external symbol _vpx_codec_build_config
    
1>libavcodec.a(libvpxenc.o) : error LNK2001: unresolved external symbol _vpx_codec_err_to_string
    
1>libavcodec.a(libvpxenc.o) : error LNK2001: unresolved external symbol _vpx_codec_error
    
1>libavcodec.a(libvpxdec.o) : error LNK2001: unresolved external symbol _vpx_codec_error
    
1>libavcodec.a(libvpxenc.o) : error LNK2001: unresolved external symbol _vpx_codec_error_detail
    
1>libavcodec.a(libvpxdec.o) : error LNK2001: unresolved external symbol _vpx_codec_error_detail
    
1>libavcodec.a(libvpxenc.o) : error LNK2001: unresolved external symbol _vpx_codec_destroy
    
1>libavcodec.a(libvpxdec.o) : error LNK2001: unresolved external symbol _vpx_codec_destroy
    
1>libavcodec.a(libvpxenc.o) : error LNK2001: unresolved external symbol _vpx_codec_control_
    
1>libavcodec.a(libvpxenc.o) : error LNK2001: unresolved external symbol _vpx_codec_enc_init_ver
    
1>libavcodec.a(libvpxenc.o) : error LNK2001: unresolved external symbol _vpx_codec_enc_config_default
    
1>libavcodec.a(libvpxenc.o) : error LNK2001: unresolved external symbol _vpx_codec_encode
    
1>libavcodec.a(libvpxenc.o) : error LNK2001: unresolved external symbol _vpx_codec_get_cx_data
    
1>libavcodec.a(libvpxenc.o) : error LNK2001: unresolved external symbol _vpx_codec_vp8_cx
    
1>libavcodec.a(libvpxdec.o) : error LNK2001: unresolved external symbol _vpx_codec_dec_init_ver
    
1>libavcodec.a(libvpxdec.o) : error LNK2001: unresolved external symbol _vpx_codec_decode
    
1>libavcodec.a(libvpxdec.o) : error LNK2001: unresolved external symbol _vpx_codec_get_frame
    
1>libavcodec.a(libvpxdec.o) : error LNK2001: unresolved external symbol _vpx_codec_vp8_dx_algo
    
1>libavutil.a(opt.o) : error LNK2001: unresolved external symbol ___stdio_common_vsscanf
    
1>libavutil.a(parseutils.o) : error LNK2001: unresolved external symbol ___stdio_common_vsscanf
    
1>libavcodec.a(h264_sei.o) : error LNK2001: unresolved external symbol ___stdio_common_vsscanf
    
1>libavcodec.a(ratecontrol.o) : error LNK2001: unresolved external symbol ___stdio_common_vsscanf
    
1>libavcodec.a(qsv.o) : error LNK2001: unresolved external symbol ___stdio_common_vsscanf
    
1>libavformat.a(id3v2.o) : error LNK2001: unresolved external symbol ___stdio_common_vsscanf
    
1>libavutil.a(log.o) : error LNK2001: unresolved external symbol ___acrt_iob_func
    
1>libavutil.a(log.o) : error LNK2001: unresolved external symbol ___stdio_common_vfprintf

    What could be missing here ?

  • ffmpeg main() function in android studio

    21 avril 2016, par Spartan

    Here I am trying to use ffmpeg with gradle experimental plugin.

    This is how I included all my shared libraries and their headers in repositories

    repositories {
    
    libs(PrebuiltLibraries) {
    
        libavdevice {
    
            headers.srcDir "/home/spartan/AndroidStudioProjects/Hello/app/src/main/jni/include"
    
            binaries.withType(SharedLibraryBinary) {
    
                sharedLibraryFile = file("/home/spartan/AndroidStudioProjects/Hello/app/src/main/jniLibs/${targetPlatform.getName()}/libavdevice-57.so")
    
            }
    
        }
    

    
        libavcodec {
    
            headers.srcDir "/home/spartan/AndroidStudioProjects/Hello/app/src/main/jni/include"
    
            binaries.withType(SharedLibraryBinary) {
    
                sharedLibraryFile = file("/home/spartan/AndroidStudioProjects/Hello/app/src/main/jniLibs/${targetPlatform.getName()}/libavcodec-57.so")
    
            }
    
        }
    

    
        libavutil {
    
            headers.srcDir "/home/spartan/AndroidStudioProjects/Hello/app/src/main/jni/include"
    
            binaries.withType(SharedLibraryBinary) {
    
                sharedLibraryFile = file("/home/spartan/AndroidStudioProjects/Hello/app/src/main/jniLibs/${targetPlatform.getName()}/libavutil-55.so")
    
            }
    
        }
    

    
        libavformat {
    
            headers.srcDir "/home/spartan/AndroidStudioProjects/Hello/app/src/main/jni/include"
    
            binaries.withType(SharedLibraryBinary) {
    
                sharedLibraryFile = file("/home/spartan/AndroidStudioProjects/Hello/app/src/main/jniLibs/${targetPlatform.getName()}/libavformat-57.so")
    
            }
    
        }
    

    
        libswscale {
    
            headers.srcDir "/home/spartan/AndroidStudioProjects/Hello/app/src/main/jni/include"
    
            binaries.withType(SharedLibraryBinary) {
    
                sharedLibraryFile = file("/home/spartan/AndroidStudioProjects/Hello/app/src/main/jniLibs/${targetPlatform.getName()}/libswscale-4.so")
    
            }
    
        }
    

    
        libswresample {
    
            headers.srcDir "/home/spartan/AndroidStudioProjects/Hello/app/src/main/jni/include"
    
            binaries.withType(SharedLibraryBinary) {
    
                sharedLibraryFile = file("/home/spartan/AndroidStudioProjects/Hello/app/src/main/jniLibs/${targetPlatform.getName()}/libswresample-2.so")
    
            }
    
        }
    

    

    

    
    }
    
}
    

    
android.ndk {    
    
        moduleName = "video_trim"
    
        ldLibs.addAll(["log", "android","jnigraphics"])
    
    }
    

    

    
    android.sources {
    
        main {
    
            jni {
    
                dependencies {
    
                   library "libavdevice" linkage "shared"
    
                   library "libavcodec" linkage "shared"
    
                   library "libavutil" linkage "shared"
    
                   library "libavformat" linkage "shared"
    
                   library "libswscale" linkage "shared"
    
                   library "libswresample" linkage "shared" 
    

    
                }
    
            }
    
        }
    
    }

    I tested one ffmpeg function(without using main function) which is running successfully. So this configuration seems ok.

    No I want to use ffmpeg.c’smain() function to use cmd for that I manually copy pasted ffmpeg.c,cmdutils.c, cmdutils.h, ffmpeg_filter.c, ffmpeg_opt.c,ffmpeg.h in my jni folder along with video_trim.c.( I took refrence from halfninja ).

    Here I am not using Andoid.mk so instead of LOCAL_C_INCLUDES, tried like this(updated android.ndk) to include ffmpeg folder(cppFlags was not working so I used CFlags also) :

    android.ndk {  
    
        moduleName = "video_trim"
    

    
        cppFlags.add("-I/home/spartan/ndk/android-ndk-r11c/sources/ffmpeg-3.0.1")
    
        CFlags.add("-I/home/spartan/ndk/android-ndk-r11c/sources/ffmpeg-3.0.1")
    

    
        ldLibs.addAll(["log", "android","jnigraphics"])
    
    }

    But I am getting lot of undefined reference to error.
    Ex :

    /home/spartan/AndroidStudioProjects/Hello/app/src/main/none/cmdutils.c
    
Error:(1086) undefined reference to 'avfilter_version'
    
Error:(1086) undefined reference to 'avfilter_configuration'
    
Error:(1621) undefined reference to 'avfilter_pad_get_type'
    
Error:(1618) undefined reference to 'avfilter_pad_get_name'
    
Error:(1610) undefined reference to 'avfilter_next'
    
Error:(1815) undefined reference to 'avfilter_get_by_name'
    
Error:(1834) undefined reference to 'avfilter_pad_count'

  • How to user ffmpeg in android app and how to add it to eclipse windows 7 operating system

    18 février 2015, par Prem Tammina

    I have added Android warzone liblary to compress the video (http://androidwarzone.blogspot.in/2011/12/ffmpeg4android.html). But it is not returning the compressing estimated time and size of the output file. So i decided to use the ffmpeg. Can any one give some info or steps to configure the ffmpeg in eclipse which was installed in windows7.

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