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We are using Azure media services and Event Grid. Once the video encoding is done the media service event is handled. At this point we have the asset name which is of the form
"output-GUID". When I go to the Azure portal I can navigate to this output and there is a storage container. In this storage container is the thumbnail. We wish to access this thumbnail. My question is given an Asset how do we get the storage container? Is there some API call we can make?
When you get the asset as part of the REST response you should get the Storage container as part of that. With REST that would be https://learn.microsoft.com/en-us/rest/api/media/assets/get and with .NET it would be the assetObject.Container to get the Storage container.
And after you have the container, you can just use the storage API to do anything that you want. Like download or access the files.
I
There are lots of examples that use the Storage client SDKs in our samples. Try this sample in our Node.js github that creates a sprite thumbnail (VTT) and downloads it using storage SDKs.
https://github.com/Azure-Samples/media-services-v3-node-tutorials/tree/main/VideoEncoding/Encoding_Sprite_Thumbnail
If you just want to access it over URL, then you can also get the SAS URL for the storage container, or you can publish the Asset with the Progressive Download policy set so that you can access the image files from the Streaming Endpoint (Origin) server in AMS like you would a manifest, or other DASH/HLS fragments as well. Although if your goal is to just serve up a JPG or PNG, the SAS URL approach directly from storage is the better route.