Yesterday I made some experiments with Excel, Powerpoint and Inernetexplorer again. In my environment (ATEM TVS and Lenovo Ideacentre 180 - internal graphis adapter connected by HDMI, all running in 1080i) it woked fine.
Experiment 1: Excel with programmed scoreboard (allready tried and desribed in the past at Atemuser.com - my posts from 26 February, 2013 - 11:15 and 5 March, 2013 - 20:47
http://www.atemuser.com/forums/atem-vis ... are-anyone )
When wanting a dark Background, play with the settings for clip (and gain). The Area is set by the mask-area.
Edit: Here the Excel-File: http://pfeiffers-ballhaus.de/simplescoreboard.xlsExperiment 2: Internetexplorer, maybe do display rankings by using php
Here I Used a black and white internet site. For font color I used ATEM color as fill signal. And the mask has to be inverted.
When programming your own html/php-site, you can optimize the background ...
Experiment 3: Powerpoint, maybe for lower thirds and other prepared graphics.
I think, for a quick and dirty solution OK. For better results you will need a solution, which generates a separate alpha channel.