Technically speaking, you are not embedding a Flash video file (.flv) into the Web page but rather a Flash .swf file, "harry.swf" which is a video player that will play the .flv video file. So when you say that the page is recognizing the code, what do you mean? Does it display the "harry.swf" video player but that player does not display the video? Have you tested harry.swf on your local machine and does it work? Is the Flash video file, the .flv on your local machine and/or server or is it a url pulled in from YouTube or something?
The most common problem when implementing video on a Web page is pathing to associated video files. So for example, if the player "harry" is expecting to find the .flv in the same folder as itself (say, the flash folder) and then you embed that player on a Web page what is not in the same folder, "harry" will not be able to locate the .flv file. Once you place that video player on a page outside it's intended folder, you are in effect removing it from that folder. Now the relative path to the .flv file has changed, and unless that path is corrected in the actionscript inside harry, it will not find and play the .flv video file.
But that is just one of many potential problems. It's impossible to tell the exact cause from just the code above. Investigate the pathing issue. If that doesn't solve it, post a link to the actual Web page, that would be much more helpful.
Best wishes,
Eye for Video
www.cidigitalmedia.com