WordPress: do_shortcode doesn't work well

I am working on a wordpress site, and I have downloaded a plugin called stream video player, which has a shortcode. If I put the shortcode into the content editor, it works well and it displays开发者_Python百科 the video, but if, inside a template I am creating, I call it through "do_shortcode" function, it doesn't work, it just shows the text [stream bla bla]. Can anyone help me and tell me why this is happening?

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I have been answered with the following, and it works!

It is not really a shortcode, it is a content filter but you can try calling the plugin's function directly

if( function_exists('StreamVideo_Parse_content') )
{
    echo StreamVideo_Parse_content("[stream bla bla /]");
}