Function create_video_chat 

pub async fn create_video_chat(
    chat_id: i64,
    title: String,
    start_date: i32,
    is_rtmp_stream: bool,
    client_id: i32,
) -> Result<GroupCallId, Error>

Creates a video chat (a group call bound to a chat). Available only for basic groups, supergroups and channels; requires can_manage_video_chats administrator right

Arguments

• chat_id - Identifier of a chat in which the video chat will be created
• title - Group call title; if empty, chat title will be used
• start_date - Point in time (Unix timestamp) when the group call is supposed to be started by an administrator; 0 to start the video chat immediately. The date must be at least 10 seconds and at most 8 days in the future
• is_rtmp_stream - Pass true to create an RTMP stream instead of an ordinary video chat; requires owner privileges
• client_id - The client id to send the request to