Find video file name in a keynote?

I have a keynote presentation from last year for a Christmas concert. I ran everything through keynote, it is pretty amazing and powerful! Anyways, I have a video in that keynote file, but I can no longer find the original file. This year I am stepping down from running the visuals, but am helping with setup for the 4 concerts. Is there a way to find what the file name of the video embedded in the Keynote file? I am sure I still have the video, but for the life of me cannot find it. I am using Yosemite latest updates, as well as latest updates to Keynote, but have Keynote 5.3 as well

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