Values.TimecodeBurninSourceSettings for burning the output timecode and specified prefix into the output.
type nonrec t = {fontSize : int option;Use Font size to set the font size of any burned-in timecode. Valid values are 10, 16, 32, 48.
*)position : TimecodeBurninPosition.t option;Use Position under Timecode burn-in to specify the location the burned-in timecode on output video.
*)prefix : string option;Use Prefix to place ASCII characters before any burned-in timecode. For example, a prefix of "EZ-" will result in the timecode "EZ-00:00:00:00". Provide either the characters themselves or the ASCII code equivalents. The supported range of characters is 0x20 through 0x7e. This includes letters, numbers, and all special characters represented on a standard English keyboard.
*)}