Depending on the model, different video resolutions such as SD, HD, FullHD or even 4K are available on the LG smartphone.

Android 9 | LG UX 9.0
Step 1:  Open the  Camera -App
Step 2:  Open the  Settings
Step 3:  Tap on  Video Resolution
Step 4:  Choose desired  Resolution
  1. Open the Camera-App
  2. Open the Settings
  3. Tap on Video Resolution
  4. Choose desired Resolution

LG Instructions