To start a video chat, open the app, create or join a room, and invite others to join your session. You'll then be able to see and hear each other in real-time.

Yes, during a video chat, you can use filters. Look for the filter option on the screen, select your preferred filter, and apply it to enhance your video experience.

To change your username or profile picture, go to the settings menu within the app. From there, select 'Profile', and you can edit your username and upload a new profile picture.

To improve video quality, ensure a stable internet connection. If possible, switch to a wired connection, reduce background activity on your network, and choose a lower video resolution in settings.

To create a themed chat room, follow these steps: 1. Open the app and tap 'Create Room'. 2. Choose a theme from the available options. 3. Invite friends or choose open settings. 4. Customize the room settings and start the chat.