enableAlphaMask property
The receiver can only render alpha channel information when the sender enables the alpha transmission feature. To enable alpha transmission, please contact technical support. (Optional) Whether to enable alpha mask rendering: true : Enable alpha mask rendering. false : (Default) Disable alpha mask rendering. Alpha mask rendering can create images with transparency effects and extract portraits from videos. When used with other methods, it can achieve effects such as portrait picture-in-picture or watermark overlays.
Implementation
@JsonKey(name: 'enableAlphaMask')
final bool? enableAlphaMask;