The tutorials for implementing this in different ways.
By Moyea Web Player
(About Moyea Web Player: Moyea Web Player is an easy-to-use FLV player
creator, with which, customizing skinning streaming FLV player and FLV player (flash video player) for website only needs a few mouse-clicks. And the created player can be easily edited via flashvars code. Its official website is: http://www.playerdiy.com/
Step 1: Open Moyea Web Player and input a video into it.
Step 2: Click the "Add" button on "overlay" tab on "Advertise" interface, check the "video" or "SWF" option, and input an video(flash video or SWF file is available).
Set at which time this video-ad will start playing, how long it will last and where it will link to (if don't want to link to any website, just leave the form of "Navigation on click" blank).
Set the transparency, the size and the sound of the ad, and set where it will show on the video
Step 3: Set the value of "Video list style" is none to remove the playlist of Flash video player
and the embed code at the right of web video player
Step 4: Click the "Publish" button on "Publish" interface and, then we can get the above demo.
The ad in the above demo also can be implemented with xml code and flashvars code.
To place an ad onto a video with xml code, all need to do is inserting a line of xml code about it into the medialist.xml file which published with the flv video player
. The line of the red code below is the xml code about the ad which in the above demo, the value of each property in the code can be modified in the way you want to.
[code]<?xml version="1.0" encoding="UTF-8"?>
If you have published a player with an embedded xml file and have no the medialist.xml file, overlaying an ad onto a video, you need to insert a line of flashvars code into the embed code of the player. The syntax of the flashvars code as below:
Note: 1. No line break of the flashvars code; 2. When videoidx=0, it stands for the first video; 3. The "…" part means the front code can be duplicated to insert multiple ads into a single or mutilple videos.
The embed code of the above demo:
var so = new SWFObject('mwplayer.swf','player','500','450','9');
'); /*no line break here*/
Source is http://www.playerdiy.com/configuration/adsolution/overlay-video-ad.html