Azure encoding job error in Stage: GenerateOutputMediaMetadata

Question

For the past two days I have been trying to run a media encoding job in Azure and I can't figure out why it fails.

Here is my workflow:

• I upload a file that has a GUID as the name in a storage container.

• I generate a sas uri and provide it as a JobInputHttp.

• The transform uses the BuiltInStandardEncoderPreset -> AACGoodQualityAudio

Every time the job fails at like 50% with the error:

ErrorProcessingTask An error has occurred. Stage: GenerateOutputMediaMetadata. Code: System.ArgumentNullException.

I am on .NET Core and using the latest version of Microsoft.Azure.Management.Media (2.0.4). Does anyone know why this error happens and how can I fix it?

My code follows the same practice as in https://github.com/Azure-Samples/media-services-v3-dotnet-quickstarts/blob/master/AMSV3Quickstarts/EncodeAndStreamFiles/Program.cs

Answer 1

It appears that you have created a Transform with a custom preset, and not the built-in AACGoodQualityAudio preset - is that correct?

For that Transform, you would need to modify the filenamePattern to include an extension, either explicitly

"filenamePattern": "{Basename}.mp4"

or implicitly

"filenamePattern": "{Basename}{Extension}"

Thanks