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Qt Creator 配置ffmpeg 開發環境

本文轉載自   查看原文   2020-09-24 11:43   632 

實際上這就是一個Qt增加第三方庫的例子。實際上添加第三方庫，就是配置include 和lib 到qt的 pro文件中。

需要下載ffmpeg的dev 和share包。其中include 和lib在dev包中。dll在share包中。

一、方法一：

1.使用Qt的圖形化界面，添加庫。

image

2.在彈出的添加庫對話框中選擇外部庫，點下一步。

image

3.在這一步選擇外部庫文件（這種圖形操作每次只能添加一個lib文件）

image

4.最終預覽通過圖形化界面即將增加的pro配置語句。

win32: LIBS += -L$$PWD/../../ffmpeg/ffmpeg-4.2.3-win64-dev/lib/ -lavcodec

INCLUDEPATH += $$PWD/../../ffmpeg/ffmpeg-4.2.3-win64-dev/include
DEPENDPATH += $$PWD/../../ffmpeg/ffmpeg-4.2.3-win64-dev/include


很不推薦這種方法，ffmpeg 的lib 庫是多個文件，include都在一個目錄下。首先他不支持多個庫文件添加，第二include文件夾雖然是相同，但是程序依舊會死死的重復添加。所以如果通過圖形化添加最終的結果會是這樣。雖然系統能夠正常識別並編譯。但是看着就不爽。

win32: LIBS += -L$$PWD/'../../ffmpeg 4.3.1/ffmpeg-4.3.1-win64-dev/lib/' -lavcodec 


INCLUDEPATH += $$PWD/'../../ffmpeg 4.3.1/ffmpeg-4.3.1-win64-dev/include'
DEPENDPATH += $$PWD/'../../ffmpeg 4.3.1/ffmpeg-4.3.1-win64-dev/include'

win32: LIBS += -L$$PWD/'../../ffmpeg 4.3.1/ffmpeg-4.3.1-win64-dev/lib/' -lavdevice

INCLUDEPATH += $$PWD/'../../ffmpeg 4.3.1/ffmpeg-4.3.1-win64-dev/include'
DEPENDPATH += $$PWD/'../../ffmpeg 4.3.1/ffmpeg-4.3.1-win64-dev/include'

win32: LIBS += -L$$PWD/'../../ffmpeg 4.3.1/ffmpeg-4.3.1-win64-dev/lib/' -lavfilter

INCLUDEPATH += $$PWD/'../../ffmpeg 4.3.1/ffmpeg-4.3.1-win64-dev/include'
DEPENDPATH += $$PWD/'../../ffmpeg 4.3.1/ffmpeg-4.3.1-win64-dev/include'

win32: LIBS += -L$$PWD/'../../ffmpeg 4.3.1/ffmpeg-4.3.1-win64-dev/lib/' -lavformat

INCLUDEPATH += $$PWD/'../../ffmpeg 4.3.1/ffmpeg-4.3.1-win64-dev/include'
DEPENDPATH += $$PWD/'../../ffmpeg 4.3.1/ffmpeg-4.3.1-win64-dev/include'

win32: LIBS += -L$$PWD/'../../ffmpeg 4.3.1/ffmpeg-4.3.1-win64-dev/lib/' -lavutil

INCLUDEPATH += $$PWD/'../../ffmpeg 4.3.1/ffmpeg-4.3.1-win64-dev/include'
DEPENDPATH += $$PWD/'../../ffmpeg 4.3.1/ffmpeg-4.3.1-win64-dev/include'

win32: LIBS += -L$$PWD/'../../ffmpeg 4.3.1/ffmpeg-4.3.1-win64-dev/lib/' -lpostproc

INCLUDEPATH += $$PWD/'../../ffmpeg 4.3.1/ffmpeg-4.3.1-win64-dev/include'
DEPENDPATH += $$PWD/'../../ffmpeg 4.3.1/ffmpeg-4.3.1-win64-dev/include'


win32: LIBS += -L$$PWD/'../../ffmpeg 4.3.1/ffmpeg-4.3.1-win64-dev/lib/' -lswresample

INCLUDEPATH += $$PWD/'../../ffmpeg 4.3.1/ffmpeg-4.3.1-win64-dev/include'
DEPENDPATH += $$PWD/'../../ffmpeg 4.3.1/ffmpeg-4.3.1-win64-dev/include'

win32: LIBS += -L$$PWD/'../../ffmpeg 4.3.1/ffmpeg-4.3.1-win64-dev/lib/' -lswscale

INCLUDEPATH += $$PWD/'../../ffmpeg 4.3.1/ffmpeg-4.3.1-win64-dev/include'
DEPENDPATH += $$PWD/'../../ffmpeg 4.3.1/ffmpeg-4.3.1-win64-dev/include'


二、方法二：

自己直接修改pro文件

INCLUDEPATH += $$PWD/ffmpeg-4.2.3-win64-dev/include


LIBS += -L$$PWD/"ffmpeg-4.2.3-win64-dev/lib" -lavcodec \
        -L$$PWD/"ffmpeg-4.2.3-win64-dev/lib" -lavdevice \
        -L$$PWD/"ffmpeg-4.2.3-win64-dev/lib" -lavfilter \
        -L$$PWD/"ffmpeg-4.2.3-win64-dev/lib" -lavformat \
        -L$$PWD/"ffmpeg-4.2.3-win64-dev/lib" -lavutil \
        -L$$PWD/"ffmpeg-4.2.3-win64-dev/lib" -lpostproc \
        -L$$PWD/"ffmpeg-4.2.3-win64-dev/lib" -lswresample \
        -L$$PWD/"ffmpeg-4.2.3-win64-dev/lib" -lswscale \


這種辦法效率很高。說一下語法

$$PWD：是項目根目錄

-L 是尋找目錄，注意跟后面的路徑buneng 有空格。

-l 是尋找庫 ，同樣不能有空格

對於多個庫 用“\” 符合結尾。


另外相對於QT 圖形化工具，我這里少了 DEPENDPATH(應用程序所依賴的搜索路徑)。實際操作發現不配置這個變量，程序也可以正常編譯執行。


三、其他：

1.最后需要把share包里的dll放到編譯后exe相同的目錄下。一般是qt 的debug目錄。

2.我們是可以把ffmpeg的dev包甚至源文件文件直接放到項目里的。方法是右擊項目——add Existing Directiry。

imageimage

它實際上也是在pro文件里面增加配置代碼,但是添加了DISTFILES 和include 環境變量依舊還需要配置libs環境變量。

DISTFILES += \ 

    ffmpeg-4.2.3-win64-dev/lib/avcodec-58.def \
    ffmpeg-4.2.3-win64-dev/lib/avcodec.lib \
    ffmpeg-4.2.3-win64-dev/lib/avdevice-58.def \
    ffmpeg-4.2.3-win64-dev/lib/avdevice.lib \
    ffmpeg-4.2.3-win64-dev/lib/avfilter-7.def \
    ffmpeg-4.2.3-win64-dev/lib/avfilter.lib \
    ffmpeg-4.2.3-win64-dev/lib/avformat-58.def \
    ffmpeg-4.2.3-win64-dev/lib/avformat.lib \
    ffmpeg-4.2.3-win64-dev/lib/avutil-56.def \
    ffmpeg-4.2.3-win64-dev/lib/avutil.lib \
    ffmpeg-4.2.3-win64-dev/lib/libavcodec.dll.a \
    ffmpeg-4.2.3-win64-dev/lib/libavdevice.dll.a \
    ffmpeg-4.2.3-win64-dev/lib/libavfilter.dll.a \
    ffmpeg-4.2.3-win64-dev/lib/libavformat.dll.a \
    ffmpeg-4.2.3-win64-dev/lib/libavutil.dll.a \
    ffmpeg-4.2.3-win64-dev/lib/libpostproc.dll.a \
    ffmpeg-4.2.3-win64-dev/lib/libswresample.dll.a \
    ffmpeg-4.2.3-win64-dev/lib/libswscale.dll.a \
    ffmpeg-4.2.3-win64-dev/lib/postproc-55.def \
    ffmpeg-4.2.3-win64-dev/lib/postproc.lib \
    ffmpeg-4.2.3-win64-dev/lib/swresample-3.def \
    ffmpeg-4.2.3-win64-dev/lib/swresample.lib \
    ffmpeg-4.2.3-win64-dev/lib/swscale-5.def \
    ffmpeg-4.2.3-win64-dev/lib/swscale.lib

HEADERS += \
    ffmpeg-4.2.3-win64-dev/include/libavcodec/ac3_parser.h \
    ffmpeg-4.2.3-win64-dev/include/libavcodec/adts_parser.h \
    ffmpeg-4.2.3-win64-dev/include/libavcodec/avcodec.h \
    ffmpeg-4.2.3-win64-dev/include/libavcodec/avdct.h \
    ffmpeg-4.2.3-win64-dev/include/libavcodec/avfft.h \
    ffmpeg-4.2.3-win64-dev/include/libavcodec/d3d11va.h \
    ffmpeg-4.2.3-win64-dev/include/libavcodec/dirac.h \
    ffmpeg-4.2.3-win64-dev/include/libavcodec/dv_profile.h \
    ffmpeg-4.2.3-win64-dev/include/libavcodec/dxva2.h \
    ffmpeg-4.2.3-win64-dev/include/libavcodec/jni.h \
    ffmpeg-4.2.3-win64-dev/include/libavcodec/mediacodec.h \
    ffmpeg-4.2.3-win64-dev/include/libavcodec/qsv.h \
    ffmpeg-4.2.3-win64-dev/include/libavcodec/vaapi.h \
    ffmpeg-4.2.3-win64-dev/include/libavcodec/vdpau.h \
    ffmpeg-4.2.3-win64-dev/include/libavcodec/version.h \
    ffmpeg-4.2.3-win64-dev/include/libavcodec/videotoolbox.h \
    ffmpeg-4.2.3-win64-dev/include/libavcodec/vorbis_parser.h \
    ffmpeg-4.2.3-win64-dev/include/libavcodec/xvmc.h \
    ffmpeg-4.2.3-win64-dev/include/libavdevice/avdevice.h \
    ffmpeg-4.2.3-win64-dev/include/libavdevice/version.h \
    ffmpeg-4.2.3-win64-dev/include/libavfilter/avfilter.h \
    ffmpeg-4.2.3-win64-dev/include/libavfilter/buffersink.h \
    ffmpeg-4.2.3-win64-dev/include/libavfilter/buffersrc.h \
    ffmpeg-4.2.3-win64-dev/include/libavfilter/version.h \
    ffmpeg-4.2.3-win64-dev/include/libavformat/avformat.h \
    ffmpeg-4.2.3-win64-dev/include/libavformat/avio.h \
    ffmpeg-4.2.3-win64-dev/include/libavformat/version.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/adler32.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/aes.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/aes_ctr.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/attributes.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/audio_fifo.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/avassert.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/avconfig.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/avstring.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/avutil.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/base64.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/blowfish.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/bprint.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/bswap.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/buffer.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/camellia.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/cast5.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/channel_layout.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/common.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/cpu.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/crc.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/des.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/dict.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/display.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/downmix_info.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/encryption_info.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/error.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/eval.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/ffversion.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/fifo.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/file.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/frame.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/hash.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/hdr_dynamic_metadata.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/hmac.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/hwcontext.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/hwcontext_cuda.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/hwcontext_d3d11va.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/hwcontext_drm.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/hwcontext_dxva2.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/hwcontext_mediacodec.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/hwcontext_qsv.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/hwcontext_vaapi.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/hwcontext_vdpau.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/hwcontext_videotoolbox.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/imgutils.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/intfloat.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/intreadwrite.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/lfg.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/log.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/lzo.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/macros.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/mastering_display_metadata.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/mathematics.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/md5.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/mem.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/motion_vector.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/murmur3.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/opt.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/parseutils.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/pixdesc.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/pixelutils.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/pixfmt.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/random_seed.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/rational.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/rc4.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/replaygain.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/ripemd.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/samplefmt.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/sha.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/sha512.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/spherical.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/stereo3d.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/tea.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/threadmessage.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/time.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/timecode.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/timestamp.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/tree.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/twofish.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/tx.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/version.h \
    ffmpeg-4.2.3-win64-dev/include/libavutil/xtea.h \
    ffmpeg-4.2.3-win64-dev/include/libpostproc/postprocess.h \
    ffmpeg-4.2.3-win64-dev/include/libpostproc/version.h \
    ffmpeg-4.2.3-win64-dev/include/libswresample/swresample.h \
    ffmpeg-4.2.3-win64-dev/include/libswresample/version.h \
    ffmpeg-4.2.3-win64-dev/include/libswscale/swscale.h \
    ffmpeg-4.2.3-win64-dev/include/libswscale/version.h



四、調試

創建一個測試文件

#include <iostream> 

#include <stdio.h>
using namespace std;
 extern "C" {

    #include "libavcodec/avcodec.h"
    #include "libavformat/avformat.h"
    #include "libswscale/swscale.h"
    #include "libavdevice/avdevice.h"
 }


int main()
{

    printf("Hello World!\n");
    cout << "Test FFmpeg!" << endl;

//    av_register_all();
    unsigned version = avcodec_version();
    cout << "version :" << version;
    return 0;
}
執行后。
image


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