Q:

video file loaded sucussefully when run my website locally but not after publishing

I have a overlay video playing in the background and it works fine when I run the website locally 
after deploying to azure I got this error message in browser console
HTTP load failed with status 404. Load of media resource https://biblo4.azurewebsites.net/Content/theme/video/Computer.mp4 failed.

A:

Finally I found the answer for my question
I had to edit web.config file to allow server send video files 
<staticContent> 
    <mimeMap fileExtension="mp4" mimeType="video/mp4"/> 
    <mimeMap fileExtension="m4v" mimeType="video/m4v"/> 
    <mimeMap fileExtension="ogg" mimeType="video/ogg"/> 
    <mimeMap fileExtension="ogv" mimeType="video/ogg"/> 
    <mimeMap fileExtension="webm" mimeType="video/webm"/> 
</staticContent>

