Hi Rohit,
You can’t use the resource folder and the video widget together. The video widget only plays videos from external url’s (Youtube, vimeo etc). See docs page https://docs.mendix.com/appstore/widgets/video-player/
You could upload the video into a File Document entity, then use the Javascript action getFileDocumentUrl from the Native file documents module ( https://marketplace.mendix.com/link/component/114252 ) and provide this URL to the video Player widget.
Good luck!
- Ryan