Hi! My video is not working in my game! Please help!
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Without information, I don't see how anyone can help you.
I'll leave you with the link to the section of the manual dedicated to videos in Construct 3: construct.net/en/make-games/manuals/construct-3/plugin-reference/video
If you can't solve it give us more information, or post a screen of the events that are giving you problems.