You didn't sell it, but your behavior may cause the leakage of company resources. Therefore, I suggest editing the video, such as reducing the size, accuracy and duration of the video clip, and adding words to the video: this video is copyrighted by XX Company and is only used to show and prove my working ability. Without the consent of the copyright owner, no one may use it for commercial purposes.

This will relieve you of your responsibilities to the maximum extent. In fact, I personally think that as long as the work you use for your resume is not for commercial purposes, there is no risk for you. Just, to be on the safe side, consider my suggestion.