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我正在尝试将音频和视频从我的 PC 实时流式传输到托管服务上的发布点。我已经编写了我认为应该有的所有代码（目前它只是一个小型控制台应用程序中的测试代码）。代码本身不会引发错误，它运行得很好，视频是从我的网络摄像头中提取的，但是当尝试将流发送到发布点时，我在系统事件日志中收到 DCOM 错误“DCOM 无法与计算机通信streamwebtown.com 使用任何配置的协议。” 我尝试使用 SDK 附带的实际 Expression Encoder 4 客户端应用程序来做同样的事情，并且视频/音频提要在同一个发布点上工作得很好。我已经在互联网上进行了广泛的搜索，看看是否有其他人遇到过这个问题，但是却一无所获。

应用程序代码：


static void Main(string[] args)
{
    EncoderDevice video = EncoderDevices.FindDevices(EncoderDeviceType.Video).Count > 0 ? EncoderDevices.FindDevices(EncoderDeviceType.Video)[0] : null;
    EncoderDevice audio = EncoderDevices.FindDevices(EncoderDeviceType.Audio).Count > 0 ? EncoderDevices.FindDevices(EncoderDeviceType.Audio)[0] : null;
    LiveJob job = new LiveJob();
    if (video != null && audio != null)
    {
        LiveDeviceSource source = job.AddDeviceSource(video, audio);
        job.ActivateSource(source);
        PushBroadcastPublishFormat publishingPoint = new PushBroadcastPublishFormat();
        publishingPoint.PublishingPoint = new Uri("http://streamwebtown.com/abc");
        publishingPoint.UserName = "user";
        publishingPoint.Password = PullPW("Stream");
        job.ApplyPreset(LivePresets.VC1Broadband16x9);
        job.PublishFormats.Add(publishingPoint);
        job.StartEncoding();

        Console.ReadKey();
        job.StopEncoding();
    }
}

private static SecureString PullPW(string pw)
{
    SecureString s = new SecureString();
    foreach (char c in pw) s.AppendChar(c);
    return s;
}
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1 回答 1

4

我找到了答案，它根本没有针对服务器进行身份验证。所以将我的代码更改为以下代码，它突然工作得很好。


 static void Main(string[] args)
        {

            EncoderDevice video = EncoderDevices.FindDevices(EncoderDeviceType.Video).Count > 0 ? EncoderDevices.FindDevices(EncoderDeviceType.Video)[0] : null;
            EncoderDevice audio = EncoderDevices.FindDevices(EncoderDeviceType.Audio).Count > 0 ? EncoderDevices.FindDevices(EncoderDeviceType.Audio)[0] : null;
            LiveJob job = new LiveJob();
            job.AcquireCredentials += new EventHandler(job_AcquireCredentials);
            if (video != null && audio != null)
            {
                LiveDeviceSource source = job.AddDeviceSource(video, audio);
                job.ActivateSource(source);
                PushBroadcastPublishFormat publishingPoint = new PushBroadcastPublishFormat();
                publishingPoint.PublishingPoint = new Uri("http://streamwebtown.com/abc");



            WindowsMediaOutputFormat wmof = new WindowsMediaOutputFormat();
            VideoProfile vProfile = new AdvancedVC1VideoProfile();
            AudioProfile aProfile = new WmaAudioProfile();
            wmof.VideoProfile = vProfile;
            wmof.AudioProfile = aProfile;

            job.ApplyPreset(LivePresets.VC1Broadband16x9);
            job.PublishFormats.Add(publishingPoint);
            job.OutputFormat = wmof;
            job.PreConnectPublishingPoint();
            job.StartEncoding();
            //After finished encoding dispose of all objects.
            Console.ReadKey();
            job.StopEncoding();
            job.Dispose();
            video.Dispose();
            audio.Dispose();
            source.Dispose();
        }
    }

    static void job_AcquireCredentials(object sender, AcquireCredentialsEventArgs e)
    {
        e.UserName = "user";
        e.Password = PullPW("Stream");
        e.Modes = AcquireCredentialModes.None;
    }

    private static SecureString PullPW(string pw)
    {
        SecureString s = new SecureString();
        foreach (char c in pw) s.AppendChar(c);
        return s;
    }

于 2011-11-09T17:25:43.100 回答