Can't play this video

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http://androidforums.com – My App has a WebView which loads a simple html. However, this html links to a rtsp live video stream and the WebView is able to load it, but when I click on one video it shows as loading the player but after some time getting message "Can't play this video.. When I open the rtsp link in the native Android browser, it loads and works fine so I know it's not the video stream being incompatible. Is there something within WebView which can be enabled to allow the rtsp video stream to be played? I tried this in both emulator and original device. Any suggestion? (General)