c# - Youtube API上载时间太短

Question

我正在尝试使用C#上传视频，上传本身可以但

视频总是太短(例如，在YouTube中2:14视频变成00:29视频，00:45视频变成00:05视频)。

上传过程中没有错误消息或异常

这是我正在使用的代码

        UserCredential credential;
        ClientSecrets secrets = new ClientSecrets();
        secrets.ClientId = "clientid";
        secrets.ClientSecret = "clientsecret";
        credential = await GoogleWebAuthorizationBroker.AuthorizeAsync(
            secrets,
            new[] { YouTubeService.Scope.YoutubeUpload },
            "username", 
            CancellationToken.None
        );

        var youtubeService = new YouTubeService(new BaseClientService.Initializer()
        {
            HttpClientInitializer = credential,
            ApplicationName = Assembly.GetExecutingAssembly().GetName().Name
        });

        var video = new Video();
        video.Snippet = new VideoSnippet();
        video.Snippet.Title = "Default Video Title";
        video.Snippet.Description = "Default Video Description";
        video.Snippet.Tags = new string[] { "tag1", "tag2" };
        video.Snippet.CategoryId = "22";
        video.Status = new VideoStatus();
        video.Status.PrivacyStatus = "public";
        var filePath = @"filepath";
        using (var fileStream = new FileStream(filePath, FileMode.Open))
        {
            var videosInsertRequest = youtubeService.Videos.Insert(video, "snippet, status", fileStream, "video/mp4");

            videosInsertRequest.ProgressChanged += videosInsertRequest_ProgressChanged;
            videosInsertRequest.ResponseReceived += videosInsertRequest_ResponseReceived;
            videosInsertRequest.Upload();
        }

收件人代码源自google-api示例

Answer 1

通过使用ffmpeg命令行对视频进行转码:

ffmpeg -i％source％％target％.mp4

我们发现使用mediainfo

http://mediaarea.net/en/MediaInfo/Download

ffmpeg的输出比原始输出短。 ffmpeg输出确实指示一些有关未找到的NAL单元的错误消息，这意味着输入流被加扰，并且上传的视频实际上比VLC媒体播放器显示的短。