azure media services from blob storage - azure

Question

I find some relevant answers but none that explains if I really need all the code from the Azure Media Services teams example at https://azure.microsoft.com/en-us/documentation/articles/media-services-copying-existing-blob/
I just want to upload a file from blob to Azure Media Services. Like this:
var uploadFilePath = blobUrl;
var uploadAsset = _context.Assets.Create(Path.GetFileNameWithoutExtension(uploadFilePath), AssetCreationOptions.None);
var assetFile = uploadAsset.AssetFiles.Create(Path.GetFileName(uploadFilePath));
assetFile.Upload(uploadFilePath);
But I'm getting
AggregateException was unhandled by user code, "An exception of type
'System.AggregateException' occurred in mscorlib.dll but was not
handled in user code"
Stack trace
at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean
includeTaskCanceledExceptions) at
System.Threading.Tasks.Task.Wait(Int32 millisecondsTimeout,
CancellationToken cancellationToken) at
Microsoft.WindowsAzure.MediaServices.Client.AssetFileData.Upload(String
path) at
UploadMediaServicesExample.Services.MediaHandler.AddFileToMediaServices(String
blobUrl) in
C:\Source\UploadMediaServicesExample\UploadMediaServicesExample\Services\MediaHandler.cs:line
51 at
UploadMediaServicesExample.Controllers.HomeController.UploadVideo(IEnumerable1
file) in
C:\Source\UploadMediaServicesExample\UploadMediaServicesExample\Controllers\HomeController.cs:line
24 at lambda_method(Closure , ControllerBase , Object[] ) at
System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase
controller, Object[] parameters) at
System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext
controllerContext, IDictionary2 parameters) at
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext
controllerContext, ActionDescriptor actionDescriptor, IDictionary2
parameters) at
System.Web.Mvc.Async.AsyncControllerActionInvoker.<BeginInvokeSynchronousActionMethod>b__39(IAsyncResult
asyncResult, ActionInvocation innerInvokeState) at
System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult2.CallEndDelegate(IAsyncResult
asyncResult) at
System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.End()
at
System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult
asyncResult) at
System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.b__3d()
at
System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.<>c__DisplayClass46.b__3f()
Additional information: One or more errors occurred.
Here is the blob Uri which is public.. "https://mulimo.blob.core.windows.net/temporary-files/clip.mp4"

Answer 1

Asset file upload method not supporting upload from blobs. It is only working with local files. Regarding exception you should see message in inner exception message property. You can use azure media services extensions (or see how it is done there) https://github.com/Azure/azure-sdk-for-media-services-extensions to create asset from existing blob.