Question

服务器Windows：

gst-launch-1.0.exe videotestsrc ! rtpvraewpay ! udpsink host=192.168.101.111 port=8001

客户端Linux：

我使用以下管道，并且可以显示testvideosrc视频：

gst-launch-1.0 udpsrc caps="application/x-rtp,media=(string)video,clock-rate=(int)90000,encoding-name=(string)RAW,width=(string)480,height=(string)360,payload=(int)96" port=8001 ! rtpvrawdepay ! videoconvert ! glimagesink

但是我无法使用以下c ++代码在QWidget上显示testvideo：

ScreenWidgets.append(new CamWidget(this));
ui->gridLayout_screens->addWidget(ScreenWidgets.last());

WId windowId= ScreenWidgets.last()->winId();

GtElement *pipeline = gst_pipeline_new("udp_pipeline");
GstElement *source        = gst_element_factory_make("udpsrc","source");
GstElement *depayloader   = gst_element_factory_make("rtpvrawdepay","depayl");
GstElement *q1          = gst_element_factory_make("queue", "qone1");
GstElement *convert1   = gst_element_factory_make("videoconvert","conv");
GstElement *q2          = gst_element_factory_make("queue", "q2");
GstElement *sink          = gst_element_factory_make("glimagesink","sink");

GstCaps *caps = gst_caps_new_simple("application/x-rtp",
                           "media", G_TYPE_STRING, "video",
                           "clock-rate",G_TYPE_INT,90000,
                           "encoding-name", G_TYPE_STRING,"RAW",
                           "width",G_TYPE_STRING,"640",
                           "height",G_TYPE_STRING,"480",
                           "payload",G_TYPE_INT,96,
                           NULL);


if(source != NULL && depayloader != NULL
   && convert1 != NULL && q1 && q2
   && sink!= NULL && caps != NULL)
{
    g_object_set(GST_OBJECT(sink),"sync",FALSE,NULL);
    g_object_set(GST_OBJECT(sink),"enable-last-sample",TRUE,NULL);

    g_object_set(G_OBJECT(source),"port",8001,NULL);
    //g_object_set(G_OBJECT(source),"buffer-size",640000,NULL);


    gst_bin_add_many (GST_BIN (pipeline), source, depayloader, NULL);

    gst_bin_add_many (GST_BIN (pipeline), convert1 ,q2, q1, sink, NULL);


    if(gst_element_link_many(depayloader,
                             q1,
                             convert1,
                             q2,
                             sink,
                             NULL))
    {
        if(gst_element_link_filtered(source,depayloader,caps))
        {
            gst_video_overlay_set_window_handle(GST_VIDEO_OVERLAY(sink),windowId);

            GThread *thread = g_thread_new(NULL,(GThreadFunc)func,loop);
        }
     }
}

谁能帮助我我哪里错了？

谢谢

Answer 1

使用gst_parse_launch（）创建管道对我很有效。

list.forEach(r -> new Runnable() {

        @Override
        public void run() {
            r.run();
        }
    });

希望这会有所帮助。

如何在QT中使用udpsrc管道流式传输视频

1 个答案: