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
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