How to play embedded video with WPF?

See more:

C#

WPF

.NET4.6

My problem is simple, i have video file stored as a resource inside my executable. And i need to play it... But it just doesn't work. It says that it cant find the file for some reason.
I need to fix this and play a embedded video.

What I have tried:

Tried using different formats. .gifs work fine, and simple images like .jpg work fine too. But .mp4, .mkv, .wmv don't work. Didn't try more formats yet. But it works if i use video file which is external, not embedded in executable,

I tried using Media Element and even embedding vlc, and its always the same. "Cant find the video..."

Here's some code:
(DIDN'T WORK)

<wpf:VlcPlayer x:Name="vlcPlayer"/>

vlcPlayer.LoadMedia(@"/Resource/videok.wmv");
vlcPlayer.Play();

------------------------------
(WORKED FINE) (but its not what i want)

<Image gif:ImageBehavior.AnimatedSource="/Resource/videobackground.gif"></Image>

------------------------------
(DIDN'T WORK TOO)

<MediaElement MediaEnded="Loginbackground_MediaEnded"  Source="/Resource/videok.wmv" Name="Loginbackground" ></MediaElement>

Tried using different file paths like

pack://application:,,,/myproject;component/Resource/videob.mp4

and

myproject;component/Resource/ideob.mp4

Tried changing build mode on my videos to Resource, Content, Embedded Resource and None. Still nothing.