How to setup DLNA media server on Windows 8

You can share media stream over network using Windows Media Player. But it is not available by default. So, in order to enabling this feature, you need to open Windows Media Player and select Stream menu. Then, it will open Media streaming options. So select Turn on media streaming button. You can list which DLNA devices are available on the same network. Select the one you want to share with and then press OK. Note that you also can select specific devices can access only specific folders from your Libraries.

Reference: How to Set Up Your Windows 8 DLNA Media Server

Rename Network in Windows 8

Take a look on:http://superuser.com/questions/550178/how-can-i-rename-a-network-in-windows-8.

Open regedit and edit the following of these registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\NetworkList\Nla\Cache\Intranet
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\NetworkList\Profiles
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\NetworkList\Signatures\Unmanaged

Get video thumbnail using MediaPlayer class

Normally, in order to get a thumbnail from a video file we may use well-known software like FFMPEG. But now we can do it natively in C# using MediaPlayer class in WPF (which need to import PresentationCore.dll). We can use the following solution for both web and windows form application as described: Getting Thumbnail from Video using MediaPlayer Class in WPF.