c++ - 我应该在下面添加什么代码进行同步？

Question

这是我在 RTSP 中通过网络流式传输视频的代码。当我打开第二个 Vlc 并再次流式传输视频时从头开始但我想进行同步例如第一个视频在第 20 秒，当我打开它时第二个应该从第 20 秒开始。

我必须做什么来处理同步？

我正在使用 VS17

#include "pch.h"
#include <iostream>
#include <gst/gst.h>
#include <gst/rtsp-server/rtsp-media.h>
#include <gst/rtsp-server/rtsp-server.h>
#include <gst/rtsp-server/rtsp-media-factory-uri.h>

 #define PORT "8554"
 static char *port = (char *)PORT;

 static GOptionEntry entries[] = {
{"port",'p', 0, G_OPTION_ARG_STRING, &port,"Port " PORT "", "PORT"}, 
 {NULL}  };

int main(int argc, gchar * argv[])
{
    GMainLoop *loop;
    GstRTSPServer *server;
    GstRTSPMountPoints *mounts;
    GstRTSPMediaFactoryURI *factory;
    GOptionContext *sample;
    GError *error = NULL;
    gchar *uri;

    sample = g_option_context_new("<uri> - Test RTSP Server, URI");
    g_option_context_add_main_entries(sample, entries, NULL);
    g_option_context_add_group(sample, gst_init_get_option_group());
    if (!g_option_context_parse(sample, &argc, &argv, &error)) {
        return -1;
    }
    loop = g_main_loop_new(NULL, FALSE);

    server = gst_rtsp_server_new();
    g_object_set(server, "service", port, NULL);

    mounts = gst_rtsp_server_get_mount_points(server);

    factory = gst_rtsp_media_factory_uri_new();

    const char* streamUri = 
        "https://www.freedesktop.org/software/gstreamer- 
         sdk/data/media/sintel_trailer-480p.webm";

    if (gst_uri_is_valid(streamUri)) {
        uri = g_strdup(streamUri);
    }
    else if (g_file_test(streamUri, G_FILE_TEST_EXISTS)) {
        uri = gst_filename_to_uri(streamUri, NULL);
    }
    else {
        printf("There is no uri");
        return -1;
    }

    gst_rtsp_media_factory_uri_set_uri(factory, uri);
    g_free(uri);

    gst_rtsp_mount_points_add_factory(mounts, "/deneme", 
        GST_RTSP_MEDIA_FACTORY(factory));

    g_object_unref(mounts);

    if (gst_rtsp_server_attach(server, NULL) == 0)
        printf("FAILED!");

    g_print("stream ready at rtsp://127.0.0.1:%s/deneme\n", port);
    g_main_loop_run(loop);

    return 0;
}

标签： c++gstreamer