Example

https://v.vnecdn.net/giaitri/video/web/mp4/2017/08/01/bao-thanh-hat-tinh-thoi-xot-xa-1501581570.mp4

ASP.NET MVC

Video Streaming using Entity Framework and HTML5 in MVC5

https://www.codeproject.com/Articles/1120366/Video-Streaming-using-Entity-Framework-and-HTML-i

Use HTML5 Video Tags in your ASP.NET Applications

http://www.misfitgeek.com/use-html5-video-tags-in-your-asp-net-applications/

MVC4: Play video stream from MS SQL FileStream / FileTable database in C#

https://code.msdn.microsoft.com/MVC4-Play-video-stream-56473266

ASP.NET

Upload Save Retrieve and Play MP4 Video files with live streaming from Database in ASP.Net using C# and VB.Net

https://www.aspsnippets.com/Articles/Upload-Save-Retrieve-and-Play-MP4-Video-files-with-live-streaming-from-Database-in-ASPNet-using-C-and-VBNet.aspx

WinForms

Audio and Video Player C# Winform

https://www.codeproject.com/Articles/844451/Audio-and-Video-Player-Csharp-Winform

MyDownloader: A Multi-thread C# Segmented Download Manager

https://www.codeproject.com/Articles/21053/MyDownloader-A-Multi-thread-C-Segmented-Download-M

Others

https://www.codeproject.com/Articles/1079119/Video-Transcoding-and-Streaming-on-the-fly