Async video streaming in asp net core web api is not working

Introduction

Async video streaming in ASP.NET Core Web API is a common for many web . However, it can be challenging to implement due to the nature of video files and the need for streaming. In this article, we will explore different approaches to solve the of async video streaming in ASP.NET Core Web API and provide examples to illustrate the solutions.

Approach 1: Using

One way to implement async video streaming in ASP.NET Core Web API is by using the FileResult class. This class allows you to return a file from the server to the client. To stream a video asynchronously, you can use the PhysicalFile method of the FileResult class.


[HttpGet]
public async Task StreamVideo()
{
    var videoPath = "path_to_video_file";
    var videoStream = new FileStream(videoPath, FileMode.Open, FileAccess.Read, FileShare.Read, bufferSize: 4096, useAsync: true);

    return new FileStreamResult(videoStream, "video/mp4");
}

In the above example, we a FileStream to read the video file asynchronously. We then pass this stream to the FileStreamResult class, along with the MIME type of the video file. This will allow the client to start streaming the video as soon as it receives the response.

Approach 2: Using MediaSource Extensions

Another approach to implement async video streaming in ASP.NET Core Web API is by using MediaSource Extensions. MediaSource Extensions is a API that allows you to dynamically generate media streams for playback in the browser.

To use MediaSource Extensions, you need to create a custom controller action that generates the video stream in chunks and sends them to the client using the MIME type. Here's an example:


[HttpGet]
public async Task StreamVideo()
{
    var videoPath = "path_to_video_file";
    var videoStream = new FileStream(videoPath, FileMode.Open, FileAccess.Read, FileShare.Read, bufferSize: 4096, useAsync: true);

    Response.Headers.Add("Content-Type", "video/mp4");
    Response.Headers.Add("Accept-Ranges", "bytes");

    var buffer = new byte[4096];
    int bytesRead;

    while ((bytesRead = await videoStream.ReadAsync(buffer, 0, buffer.Length)) > 0)
    {
        await Response.Body.WriteAsync(buffer, 0, bytesRead);
        await Response.Body.FlushAsync();
    }

    return new EmptyResult();
}

In the above example, we create a FileStream object to read the video file asynchronously. We then set the appropriate response headers to indicate the MIME type and enable byte range requests. We then read the video file in chunks and write them to the response body. This allows the client to start streaming the video as it receives the chunks.

Conclusion

Async video streaming in ASP.NET Core Web API can be achieved using different approaches. In this article, we explored two approaches: using the FileResult class and using MediaSource Extensions. Both approaches allow you to stream videos asynchronously and provide a seamless streaming experience to your users. the approach that best suits your requirements and implement it in your ASP.NET Core Web API.

Rate this post

Leave a Reply

Your email address will not be published. Required fields are marked *

Table of Contents