Hello All, 

I was developing a Web API for Uploading and managing content. For the Feodra College Project. The API would allow basic stuff like Uploading Deleting and Uploading revisions of Content. Content can be either of following types namely Documents( PDF / DOC etc ), Images, Videos and Audio recordings.

The problem I am facing here is with generating thumbnail images for these content types. Mainly for the Video and Document types.  Can someone guide me on how this can be done? Or any previous efforts by anyone. 

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Regards 
Hammad Haleem