You can call the AddCasterLayout or ModifyCasterLayout API operation to create or modify a layout. When you call the API operations, you can set parameters to specify a normalized width and height for each video layer. This way, you can scale video layers.

The following section describes the API operations and related parameters:

  • API operations:
  • Parameters:
    • HeightNormalized: the normalized height of the video layer. The width of the video layer is proportionally scaled based on this parameter.
      • The default value is 0, which indicates that the video layer is not scaled.
      • Valid values: 0 to 1.
    • WidthNormalized: the normalized width of the video layer. The height of the video layer is proportionally scaled based on this parameter.
      • The default value is 0, which indicates that the video layer is not scaled.
      • Valid values: 0 to 1.
      Note If you set both the normalized height and width, the video layer is scaled in the specified aspect ratio, which may not be proportional.