环境搭建

安装QT

Qt 5.14.2下根据需求勾选MinGW 32位或64位MinGW 7.3.0 32-bit和MinGW 7.3.0 64-bit

Developer and Desiger Tools仅选勾选Qt Creator 4.11.1 CDB ，这里面的MinGW不需要勾！

安装FFmpeg

Linux下编译

编译x264依赖库(可选)

 sudo apt install nasm
./configure --enable-shared  --enable-pic --prefix=../new-root 
make
make install
ls -l ../new-root

编译FFmpeg

Download FFmpeg

默认不安装x264:
./configure --prefix=../new-root --enable-pthreads --enable-shared --disable-static --enable-pic

链接x264:
./configure --prefix=../new-root --enable-pthreads --enable-shared --disable-static  --enable-pic \
--extra-cflags=-I../new-root/include \
--extra-ldflags=-L../new-root/lib \
--enable-gpl --enable-libx264 
 
 
make
make install
strip ../new-root/lib/*
mv ../new-root ~/codes/FFmpegDemo/ffmpeg

Windows下直接下载开发包

Download FFmpeg Builds

Architecture选择Windows 64-bit，在Linking分别选择Shared和Dev下载两个压缩包。

解压 Shared压缩包，把里面的bin目录添加到系统环境变量

解压Dev压缩包，把文件夹命名为ffmpeg后放在工程目录

Windows下编译

windows下编译FFMPEG

windows下编译ffmpeg

Qt5开发：使用windeployqt打包发布

mingw64.exe

export PATH="/mingw64/bin:$PATH"
./configure --disable-static --enable-shared --disable-doc --prefix=output64 --arch=x86_64

liblzma-5.dll
libwinpthread-1.dll
libbz2-1.dll
zlib1.dll
libiconv-2.dll




=====32位==========================================================
export PATH="/mingw32/bin:$PATH"
./configure --disable-static --enable-shared --disable-doc --prefix=output32 --arch=x86_32


libgcc_s_dw2-1.dll
liblzma-5.dll
libwinpthread-1.dll
libbz2-1.dll
zlib1.dll
libiconv-2.dll

配置工程

Peoject - build settings - build directory

项目-构建设置-构建目录

linux配置：%{CurrentProject:Path}/%{CurrentBuild:Type}

windows配置：%{CurrentProject:Path}\build

pro工程配置引用ffmpeg

# ffmpeg
FFMPEG_PATH = $$PWD/ffmpeg

INCLUDEPATH += $$FFMPEG_PATH/include

LIBS += -L$$FFMPEG_PATH/lib/ \
    -lavcodec \
    -lavdevice \
    -lavfilter \
    -lavformat \
    -lavutil \
    -lswresample \
    -lswscale

githubchry/FFmpegDemo