我在为上传到我公司的 youtube 频道的视频添加字幕时遇到问题。我想在 .Net 中使用 Google 的 Youtube Api v3 来实现。我能够成功地将视频上传到频道，但在尝试发送字幕时出现以下错误：“System.Net.Http.HttpRequestException：响应状态代码不表示成功：403（禁止）。”
据我所知，我的凭据并没有禁止我上传字幕。我可以毫无问题地上传视频。
我使用此处的说明创建了刷新令牌： Youtube API single-user scenario with OAuth (uploading videos)
这是我用来创建 YouTubeService 对象的代码：
private YouTubeService GetYouTubeService()
{
string clientId = "clientId";
string clientSecret = "clientSecret";
string refreshToken = "refreshToken";
try
{
ClientSecrets secrets = new ClientSecrets()
{
ClientId = clientId,
ClientSecret = clientSecret
};
var token = new TokenResponse { RefreshToken = refreshToken };
var credentials = new UserCredential(new GoogleAuthorizationCodeFlow(
new GoogleAuthorizationCodeFlow.Initializer
{
ClientSecrets = secrets,
Scopes = new[] { YouTubeService.Scope.Youtube, YouTubeService.Scope.YoutubeUpload, YouTubeService.Scope.YoutubeForceSsl }
}),
"user",
token);
var service = new YouTubeService(new BaseClientService.Initializer()
{
HttpClientInitializer = credentials,
ApplicationName = "TestProject"
});
service.HttpClient.Timeout = TimeSpan.FromSeconds(360);
return service;
}
catch (Exception ex)
{
Log.Error("YouTube.GetYouTubeService() => Could not get youtube service. Ex: " + ex);
return null;
}
}
这是我上传字幕文件的代码：
private void UploadCaptionFile(String videoId)
{
try
{
Caption caption = new Caption();
caption.Snippet = new CaptionSnippet();
caption.Snippet.Name = videoId + "_Caption";
caption.Snippet.Language = "en";
caption.Snippet.VideoId = videoId;
caption.Snippet.IsDraft = false;
WebRequest req = WebRequest.Create(_urlCaptionPath);
using (Stream stream = req.GetResponse().GetResponseStream())
{
CaptionsResource.InsertMediaUpload captionInsertRequest = _youtubeService.Captions.Insert(caption, "snippet", stream, "*/*");
captionInsertRequest.Sync = true;
captionInsertRequest.ProgressChanged += captionInsertRequest_ProgressChanged;
captionInsertRequest.ResponseReceived += captionInsertRequest_ResponseReceived;
IUploadProgress result = captionInsertRequest.Upload();
}
}
catch (Exception ex)
{
Log.Error("YouTube.UploadCaptionFile() => Unable to upload caption file. Ex: " + ex);
}
}
void captionInsertRequest_ResponseReceived(Caption obj)
{
Log.Info("YouTube.captionInsertRequest_ResponseReceived() => Caption ID " + obj.Id + " was successfully uploaded for this clip.");
Utility.UpdateClip(_videoClip);
}
void captionInsertRequest_ProgressChanged(IUploadProgress obj)
{
switch (obj.Status)
{
case UploadStatus.Uploading:
Console.WriteLine("{0} bytes sent.", obj.BytesSent);
break;
case UploadStatus.Failed:
Log.Error("YouTube.UploadCaptionFile() => An error prevented the upload from completing. " + obj.Exception);
break;
}
}
过去几天我一直在研究这个问题，但我一直无法取得任何进展。YouTubeApi v3 没有太多关于添加字幕的信息。我所能找到的只是 v2 的一些旧信息，这需要一些需要我没有的密钥的 POST 调用。我希望能够使用 API 的内置方法添加字幕。
如果有人有处理此问题的经验，我将非常感谢您提供的任何帮助。
编辑：
这是我将视频发送到 YouTube 的代码。
public string UploadClipToYouTube()
{
try
{
var video = new Google.Apis.YouTube.v3.Data.Video();
video.Snippet = new VideoSnippet();
video.Snippet.Title = _videoClip.Name;
video.Snippet.Description = _videoClip.Description;
video.Snippet.Tags = GenerateTags();
video.Snippet.DefaultAudioLanguage = "en";
video.Snippet.DefaultLanguage = "en";
video.Snippet.CategoryId = "22";
video.Status = new VideoStatus();
video.Status.PrivacyStatus = "unlisted";
WebRequest req = WebRequest.Create(_videoPath);
using (Stream stream = req.GetResponse().GetResponseStream())
{
VideosResource.InsertMediaUpload insertRequest = _youtubeService.Videos.Insert(video, "snippet, status", stream, "video/*");
insertRequest.ProgressChanged += videosInsertRequest_ProgressChanged;
insertRequest.ResponseReceived += videosInsertRequest_ResponseReceived;
insertRequest.Upload();
}
return UploadedVideoId;
}
catch (Exception ex)
{
Log.Error("YouTube.UploadClipToYoutube() => Error attempting to authenticate for YouTube. Ex: " + ex);
return "";
}
}
void videosInsertRequest_ProgressChanged(Google.Apis.Upload.IUploadProgress progress)
{
switch (progress.Status)
{
case UploadStatus.Uploading:
Log.Info("YouTube.videosInsertRequest_ProgressChanged() => Uploading to Youtube. " + progress.BytesSent + " bytes sent.");
break;
case UploadStatus.Failed:
Log.Error("YouTube.videosInsertRequest_ProgressChanged() => An error prevented the upload from completing. Exception: " + progress.Exception);
break;
}
}
void videosInsertRequest_ResponseReceived(Google.Apis.YouTube.v3.Data.Video video)
{
Log.Info("YouTube.videosInsertRequest_ResponseReceived() => Video was successfully uploaded to YouTube. The YouTube id is " + video.Id);
UploadedVideoId = video.Id;
UploadCaptionFile(video.Id);
}