These guys specialize in worship media and church digital video production resources. All of their products are available for instant download.
All of the video products come in 4:3 (640×480) and in addition most are in 16:9 aspect ratio as well. This is due to the increase in HD projection in the church and worship services. With HD or 16:9 aspect you can add more real estate to your screen for presentation. Main stream worship tools like MediaShout and EasyWorship allow you to add 16:9 content to your play list for service. All of their still backgrounds and motion backgrounds are 100% compatible with MediaShout, EasyWorship, Presentation Manager, SundayPlus, PowerPoint and many others.
If you are looking for another resource for your backgrounds, you may want to check these guys out.
Staff writer for ExperiencingWorship.com.