From 4d6acb7c24e997f0139fc95cad3b38b0c539081d Mon Sep 17 00:00:00 2001
From: feiyangqingyun <feiyangqingyun@163.com>
Date: Wed, 21 Jun 2023 14:32:33 +0800
Subject: [PATCH] =?UTF-8?q?=E6=9B=B4=E6=96=B0=E4=BB=A3=E7=A0=81?=
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---
 video/playffmpeg/ffmpeg/ffmpeg.cpp | 16 +++++++++++++---
 video/playffmpeg/widget.cpp        |  6 +++---
 2 files changed, 16 insertions(+), 6 deletions(-)

diff --git a/video/playffmpeg/ffmpeg/ffmpeg.cpp b/video/playffmpeg/ffmpeg/ffmpeg.cpp
index c455b87..d417440 100644
--- a/video/playffmpeg/ffmpeg/ffmpeg.cpp
+++ b/video/playffmpeg/ffmpeg/ffmpeg.cpp
@@ -231,6 +231,7 @@ bool FFmpegThread::init()
 
 void FFmpegThread::run()
 {
+    qint64 startTime = av_gettime();
     while (!stopped) {
         //根据标志位执行初始化操作
         if (isPlay) {
@@ -270,16 +271,25 @@ void FFmpegThread::run()
                         emit receiveImage(image);
                     }
 
-                    msleep(1);
+                    usleep(1);
                 }
+#if 1
+                //延时(不然文件会立即全部播放完)
+                AVRational timeBase = {1, AV_TIME_BASE};
+                int64_t ptsTime = av_rescale_q(avPacket->dts, avFormatContext->streams[videoStreamIndex]->time_base, timeBase);
+                int64_t nowTime = av_gettime() - startTime;
+                if (ptsTime > nowTime) {
+                    av_usleep(ptsTime - nowTime);
+                }
+#endif
             } else if (index == audioStreamIndex) {
-                //解码音频流,这里暂不处理,以后交给sdl播放
+                //解码音频流,自行处理
             }
         }
 
         av_packet_unref(avPacket);
         av_freep(avPacket);
-        msleep(1);
+        usleep(1);
     }
 
     //线程结束后释放资源
diff --git a/video/playffmpeg/widget.cpp b/video/playffmpeg/widget.cpp
index bc99ab9..c293500 100644
--- a/video/playffmpeg/widget.cpp
+++ b/video/playffmpeg/widget.cpp
@@ -6,10 +6,10 @@ Widget::Widget(QWidget *parent) : QWidget(parent), ui(new Ui::Widget)
 {
     ui->setupUi(this);
 
+    //本示例支持的是rtsp视频流(其他的一概不支持/没有做音视频同步)
     QStringList urls;
-    urls << "f:/1.mp4";
-    urls << "rtsp://wowzaec2demo.streamlock.net/vod/mp4:BigBuckBunny_115k.mov";
-    urls << "http://vfx.mtime.cn/Video/2019/02/04/mp4/190204084208765161.mp4";
+    urls << "http://vfx.mtime.cn/Video/2021/11/16/mp4/211116131456748178.mp4";
+    urls << "http://vd3.bdstatic.com/mda-jennyc5ci1ugrxzi/mda-jennyc5ci1ugrxzi.mp4";
     urls << "rtsp://admin:Admin123456@192.168.0.15:554/media/video1";
     ui->cboxUrl->addItems(urls);
     ui->cboxUrl->setCurrentIndex(0);