How to add this effect to short video of mobile phone? Such as TV news

To edit a recorded video on your phone:

1. If the mobile phone has built-in video player software: application-video player (video)-menu key-edit-the device will prompt to download the video editor-click download-enter the download page of Samsung App Store, and download the video editor software to use. Or go directly to the Samsung App Store (some models can be downloaded through more services)-download the video editor for use.

2. Some machines have built-in video players with trimming function. Operation: Open the video player-Menu button-(Edit)-Trim.

3. Some Samsung mobile phones do not support video editors. You can try to download and use a third-party video editor.