Question

我正在构建一个应用程序，我正在尝试编写一个webjob 拿一个mp4文件我已经上传到blob存储并创建一个资产然后我可以编码并准备使用azure媒体服务流。

public class Functions
    {
        // This function will get triggered/executed when a new message is written 
        // on an Azure Queue called queue.
        static string accName = "copied from portal ";
        static string accKey = "as above";
        static CloudMediaContext context = new CloudMediaContext(accName,accName);
        // Use the cached credentials to create CloudMediaContext.
        //static CloudMediaContext context = new CloudMediaContext(accName,accKey);
        public static void ProcessVideo(
        [QueueTrigger("videorequest")] VideoBlobInformation blobInfo,
        [Blob("{ProfileId}/{BlobName}", FileAccess.Read)] Stream input,
        [Blob("{ProfileId}/{BlobNameWithoutExtension}_stream.mp4")] CloudBlockBlob outputBlob)
        {
            VideoBlobInformation b = blobInfo;
            using (Stream output = outputBlob.OpenWrite())
            {
                ConvertAndPrepareVideo(b,input, output);
            }
            // Entity Framework context class is not thread-safe, so it must
            // be instantiated and disposed within the function.
            using (impulsevidContext db = new impulsevidContext())
            {
                //var id = blobInfo.ProfileId;
                //Video ad = db.Videos.Find(id);
                //if (ad == null)
                //{
                  //  throw new Exception(String.Format("AdId {0} not found, can't create thumbnail", id.ToString()));
                //}
                //ad.StreamUrl = outputBlob.Uri.ToString();
                //db.SaveChanges();
            }
            
        }
        public static void ConvertAndPrepareVideo(VideoBlobInformation info,Stream input, Stream output)
        {
            var storageAccount = new CloudStorageAccount(new StorageCredentials("accnameofstorage", "storage account associated with azure media services"), true);
            //output all webjob input blobs into a container -mediacontroller- 
            var cloudBlobClient = storageAccount.CreateCloudBlobClient();
            var mediaBlobContainer = cloudBlobClient.GetContainerReference("impfile");
            mediaBlobContainer.CreateIfNotExists();
            IAsset sourceAsset = context.Assets.Where(a => a.Id == info.VideoId).First();
        }

我正在使用我上传到的单个存储帐户。无论我尝试使用此行

，我都会收到此错误400

IAsset sourceAsset = context.Assets.Where(a => a.Id == info.VideoId).First();

导致此日志错误

Microsoft.Azure.WebJobs.Host.FunctionInvocationException：执行函数时出现异常：Functions.ProcessVideo ---＆gt; System.Net.WebException：远程服务器返回错误：（400）错误请求。在System.Net.WebClient.UploadValues（Uri地址，String方法，NameValueCollection数据）在System.Net.WebClient.UploadValues（String address，String method，NameValueCollection data）在Microsoft.WindowsAzure.MediaServices.Client.AcsTokenProvider。＆lt;＆gt; c__DisplayClass47_2.b__0（）在Microsoft.Practices.TransientFaultHandling.RetryPolicy。＆lt;＆gt; c__DisplayClass1.b__0（）在Microsoft.Practices.TransientFaultHandling.RetryPolicy.ExecuteAction [TResult]（Func 1 func) at Microsoft.Practices.TransientFaultHandling.RetryPolicy.ExecuteAction(Action action) at Microsoft.WindowsAzure.MediaServices.Client.AcsTokenProvider.RefreshToken() at Microsoft.WindowsAzure.MediaServices.Client.AcsTokenProvider.GetAccessToken() at Microsoft.WindowsAzure.MediaServices.Client.AcsTokenProvider.GetAuthorizationHeader() at Microsoft.WindowsAzure.MediaServices.Client.OAuth.OAuthDataServiceAdapter.AddAccessTokenToRequest(WebRequest request) at Microsoft.WindowsAzure.MediaServices.Client.AzureMediaServicesClassFactory.<>c__DisplayClass21_0.<GetAccountApiEndpoint>b__0() at Microsoft.Practices.TransientFaultHandling.RetryPolicy.<>c__DisplayClass1.<ExecuteAction>b__0() at Microsoft.WindowsAzure.MediaServices.Client.TransientFaultHandling.MediaRetryPolicy.ExecuteAction[TResult](Func 1 func）在Microsoft.Practices.TransientFaultHandling.RetryPolicy.ExecuteAction（Action action）在Microsoft.WindowsAzure.MediaServices.Client.AzureMediaServicesClassFactory.GetAccountApiEndpoint（OAuthDataServiceAdapter dataServiceAdapter，ServiceVersionAdapter versionAdapter，Uri apiServer，UserAgentAdapter userAgentAdapter，IWebRequestAdapter clientRequestIdAdapter）在Microsoft.WindowsAzure.MediaServices.Client.AzureMediaServicesClassFactory。＆lt;＆gt; c__DisplayClass24_0.b__0（）在Microsoft.WindowsAzure.MediaServices.Client.Cache 1.GetOrAdd(String key, Func 1 valueFactory，Func 1 expirationFactory) at Microsoft.WindowsAzure.MediaServices.Client.AzureMediaServicesClassFactory.CreateAzureMediaServicesEndPoint(Uri azureMediaServicesEndpoint, MediaContextBase mediaContext) at Microsoft.WindowsAzure.MediaServices.Client.AzureMediaServicesClassFactory..ctor(Uri azureMediaServicesEndpoint, CloudMediaContext mediaContext) at Microsoft.WindowsAzure.MediaServices.Client.CloudMediaContext.get_MediaServicesClassFactory() at Microsoft.WindowsAzure.MediaServices.Client.AssetCollection.<.ctor>b__2_0() at System.Lazy 1.CreateValue（）在System.Lazy 1.LazyInitValue() at System.Lazy 1.get_Value（）在Microsoft.WindowsAzure.MediaServices.Client.AssetCollection.get_Queryable（）在Microsoft.WindowsAzure.MediaServices.Client.BaseCollection 1.get_Provider() at System.Linq.Queryable.Where[TSource](IQueryable 1 source，Expression 1 predicate) at VideoProcess.Functions.ConvertAndPrepareVideo(VideoBlobInformation info, Stream input, Stream output) at VideoProcess.Functions.ProcessVideo(VideoBlobInformation blobInfo, Stream input, CloudBlockBlob outputBlob) at lambda_method(Closure , Functions , Object[] ) at Microsoft.Azure.WebJobs.Host.Executors.VoidMethodInvoker 1.InvokeAsync（TReflected instance，Object [] arguments）在Microsoft.Azure.WebJobs.Host.Executors.FunctionInvoker`1.d__8.MoveNext（） ---从抛出异常的先前位置开始的堆栈跟踪结束--- 在System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess（任务任务）在System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification（任务任务）在Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor.d__22.MoveNext（） ---从抛出异常的先前位置开始的堆栈跟踪结束--- 在System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess（任务任务）在System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification（任务任务）在System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd（任务任务）在Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor.d__21.MoveNext（） ---从抛出异常的先前位置开始的堆栈跟踪结束--- 在System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess（任务任务）在System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification（任务任务）在Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor.d__19.MoveNext（） ---从抛出异常的先前位置开始的堆栈跟踪结束--- 在System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess（任务任务）在System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification（任务任务）在System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd（任务任务）在Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor.d__13.MoveNext（） ---内部异常堆栈跟踪结束--- 在System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw（）在Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor.d__13.MoveNext（） ---从抛出异常的先前位置开始的堆栈跟踪结束--- 在System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess（任务任务）在System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification（任务任务）在Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor.d__10.MoveNext（）

Answer 1

context = new CloudMediaContext（new MediaServicesCredentials（ accName， accKey））; 应该在ConvertAndPrepareVideo方法中设置，而不是在

之外

Azure媒体服务错误400

1 个答案: