Stream from Azure Blob

controller.cs

[Route("api/test")]
[HttpGet]
public async Task<IActionResult> Test() {        
    var contentType = "multipart/x-mixed-replace;boundary=myboundary";
    Stream stream = await client.Value.GetStreamAsync(WebCamUrl);
    var result = new FileStreamResult(stream, contentType) {
         EnableRangeProcessing = true
    };
    return result;
}

index.html

<video autoplay src="localhost:52867/api/test" controls="true"></video>