ApsaraVideo Live:How do I scale a video layer?

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. The following section describes the API operations and related parameters:

• API operations:

  • AddCasterLayout: creates a layout in a production studio.

  • ModifyCasterLayout: modifies a layout in a production studio.

• 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.