You may need a lower resolution copy of a video, especially when you want to use 'video layer' but the video layer can't be added due to device capability, or when you want to use more video layers. Then you have to re-encode the video.
To re-encode a video, please follow the steps below:
1. Create a new project and import the video which resolution is too high for your use.
2. Proceed to exporting the project without any editing.
3. Export after adjusting Resolution, Frame Rate and Bitrate as you want.
4. Import the exported re-encoded video for your real project.