Is it a good idea for working at home?

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No one can tell you what people will pay for something, that's something you will learn as you operate the business.

Before you spend time doing this, check the video sharing sites for what people are already doing. There are quite a number of sites that allow users to add video and audio to their photo collections.

Your best bet is to make one for a friend or family member, then try to sell it to them. If you are on a social network, ask people there if they would buy something like this. Don't create it first, then look for a buyer. Also, don't forget model releases for anyone, any business or any identifiable landmark you take photos of because you can be sued.