Modifying an interface displaying video content received from users participating in a video exchange session based on input from a participating user

A method comprising:

• receiving a creation request for establishing a video exchange session from a user at an online system, the creation request identifying one or more other users to exchange video content with the requesting user;
• generating, by the online system, an interface of the video exchange session, the interface including a prompt region displaying content to the users participating in the video exchange session and regions associated with each user participating in the video exchange session, a region associated with a user displaying video content the online system receives from the user;
• receiving an interaction with the prompt region from a user participating in the video exchange session at the online system;
• modifying content displayed in the prompt region to alternative content in response to receiving the interaction;
• and
• transmitting the interface from the online system including the alternative content displayed in the prompt region to client devices of one or more users participating in the video exchange session.

A method comprising:

• receiving a creation request for establishing a video exchange session from a requesting user at an online system, the creation request identifying one or more other users to exchange video content with the requesting user;
• generating, by the online system, an interface of the video exchange session, the interface including regions associated with each user participating in the video exchange session, a region associated with a user displaying video content the online system receives from the user;
• transmitting the interface from the online system to client devices of one or more users participating in the video exchange session;
• receiving, at the online system, a request for a screen capture of the interface displayed on a client device of a requesting user from the client device;
• transmitting a notification to client devices of the users participating in the video exchange session in response to receiving the request;
• capturing, by the online system after the client devices of the users participating in the video exchange session display the notification, an image of the interface including content displayed by the regions of the interface when the image is captured;
• and
• transmitting the image of the interface from the online system to the client device of the requesting user.