How do I capture a Jib Jab video (I'm using a Mac) so I can upload it to my Youtube account?

My husband and daughter created a very cute Jib Jab video for me. I want to capture it and upload it into my YouTube videos so i can show all my friends. How do I do it? I am using a MAC. I tried trial version softwares but they did not give me the result I want. Thanks!
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