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Is it possible..? Using javascript to get a file from a local directory
No, webapps don't have access to client file system, that is for security reasons, otherwise any web malware would have access to all your files.
All what can be done is opening a file open window where user say if it allow access to a file, but user choose which file, and only if a want.
So you can't play a bunch of videos from local storage.