If you are creating this video, use these tips from Adobe and other experts: Best Practices and Tips for Shooting Smartphone Videos
If you have a file literally named "new video.mp4" and want to make it look or work better, follow these steps: 1. Optimize the Quality New video.mp4
In some online circles, "new video.mp4" refers to specific pieces of or ARG (Alternate Reality Game) content. If you are creating this video, use these