A. 1. Check video format: Ensure that the videos you are trying to edit are in a supported format. Convert them if necessary. 2. Restart the app: Close and reopen OVF Editor to refresh the editing session. 3. Free up storage: Ensure your device has enough storage space, as low storage can cause performance issues.

B. 4. Update the app: Make sure you are using the latest version of OVF Editor, as updates may fix bugs related to video editing.