Help Cannot Find Video

joe pau

So I can view the video on my phone through the gallery. When I look at the details it say's it's on my sd card and shows a file name. And it plays. I'd like to copy the file to my windows pc. I can see other video I've shot, but not the one I want. Why can't I find it? Can't email as it's too large. Appreciate the help and Merry xmas!