Qt播放YUV420P文件

零开始学习音视频编程技术（十五） YUV420P转RGB32 在转换的基础加上了Qt显示的界面。实现了Qt播放YUV420P文件 这是Qt的工程，建议使用Qt Creator 打开 Qt的版本是4.8.4，当然是用Qt5也是没有影响的，不过编译器记得使用Mingw。 FFMPEG的版本是2.5.2 记得将ffmpeg/bin目录下的dll文件拷贝到编译生成的exe所在的目录下，否则会无法运行。 关于代码的解释 请参考： http://blog.yundiantech.com/?log=blog&id=19

/**
 * 叶海辉
 * QQ群121376426
 * http://blog.yundiantech.com/
 */
#include “mainwindow.h“
#include 

#include 

int main（int argc char *argv[]）
{
    QApplication a（argc argv）;

    QTextCodec *codec = QTextCodec::codecForName（“UTF-8“）;
    QTextCodec::setCodecForLocale（codec）;
    QTextCodec::setCodecForCStrings（codec）;
    QTextCodec::setCodecForTr（codec）;

    MainWindow w;
    w.show（）;

    return a.exec（）;
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2016-09-28 17:37  Yuv420pPlayer\
     目录           0  2016-09-28 13:56  Yuv420pPlayer\ffmpeg\
     目录           0  2016-09-28 13:56  Yuv420pPlayer\ffmpeg\bin\
     文件    19646464  2014-12-31 06:21  Yuv420pPlayer\ffmpeg\bin\avcodec-56.dll
     文件     1367552  2014-12-31 06:21  Yuv420pPlayer\ffmpeg\bin\avdevice-56.dll
     文件     2314752  2014-12-31 06:21  Yuv420pPlayer\ffmpeg\bin\avfilter-5.dll
     文件     5839360  2014-12-31 06:21  Yuv420pPlayer\ffmpeg\bin\avformat-56.dll
     文件      452096  2014-12-31 06:21  Yuv420pPlayer\ffmpeg\bin\avutil-54.dll
     文件      324608  2014-12-31 06:21  Yuv420pPlayer\ffmpeg\bin\ffmpeg.exe
     文件      475136  2014-12-31 06:21  Yuv420pPlayer\ffmpeg\bin\ffplay.exe
     文件      152576  2014-12-31 06:21  Yuv420pPlayer\ffmpeg\bin\ffprobe.exe
     文件      121344  2014-12-31 06:21  Yuv420pPlayer\ffmpeg\bin\postproc-53.dll
     文件      270336  2014-12-31 06:21  Yuv420pPlayer\ffmpeg\bin\swresample-1.dll
     文件      446976  2014-12-31 06:21  Yuv420pPlayer\ffmpeg\bin\swscale-3.dll
     目录           0  2016-09-28 13:56  Yuv420pPlayer\ffmpeg\include\
     目录           0  2016-09-28 13:56  Yuv420pPlayer\ffmpeg\include\libavcodec\
     文件      179819  2014-12-31 06:21  Yuv420pPlayer\ffmpeg\include\libavcodec\avcodec.h
     文件        3111  2014-12-31 06:21  Yuv420pPlayer\ffmpeg\include\libavcodec\avfft.h
     文件        3764  2014-12-31 06:21  Yuv420pPlayer\ffmpeg\include\libavcodec\dv_profile.h
     文件        2358  2014-12-31 06:21  Yuv420pPlayer\ffmpeg\include\libavcodec\dxva2.h
     文件       10623  2014-12-31 06:21  Yuv420pPlayer\ffmpeg\include\libavcodec\old_codec_ids.h
     文件        4007  2014-12-31 06:21  Yuv420pPlayer\ffmpeg\include\libavcodec\vaapi.h
     文件        5437  2014-12-31 06:21  Yuv420pPlayer\ffmpeg\include\libavcodec\vda.h
     文件        7094  2014-12-31 06:21  Yuv420pPlayer\ffmpeg\include\libavcodec\vdpau.h
     文件        6340  2014-12-31 06:21  Yuv420pPlayer\ffmpeg\include\libavcodec\version.h
     文件        2317  2014-12-31 06:21  Yuv420pPlayer\ffmpeg\include\libavcodec\vorbis_parser.h
     文件        6062  2014-12-31 06:21  Yuv420pPlayer\ffmpeg\include\libavcodec\xvmc.h
     目录           0  2016-09-28 13:56  Yuv420pPlayer\ffmpeg\include\libavdevice\
     文件       16642  2014-12-31 06:21  Yuv420pPlayer\ffmpeg\include\libavdevice\avdevice.h
     文件        1859  2014-12-31 06:21  Yuv420pPlayer\ffmpeg\include\libavdevice\version.h
     目录           0  2016-09-28 13:56  Yuv420pPlayer\ffmpeg\include\libavfilter\
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