It is very common problem for computer users that they can't get their browser integrated with Internet Download Manager(IDM). The problem is basically occurs when we have latest version  of our browser and old version of Internet Download Manager(IDM) and IDM plugin is not properly installed. This problem can be overcome by following these steps:

• As I mentioned in my previous post that IDM works best with Mozilla Firefox
• Just Download IDM 6.07 from this link: Internet Download Manager
• Click and install "idman607.exe"
• Now click on "idm.rar" and click on "idm.reg" and then click "Yes" ---> click "Ok"

• Now go to this web address: http://www.internetdownloadmanager.com/register/new_faq/bi4_1.html
•  Click on "install" button, the downloading of IDM plugin will be started
• Now open the downloaded file with Mozilla Firefox, Google Chrome or any other browser you use.
• It will asks you to install that plugin. Click the "install" button
• Now restart the browser, you will be able to download any video file form any website.

If this is not helpful, please give me feedback.