用于将视频分配给虚拟 SSRC 的画布。如果提供的画布数量多于虚拟串流的数量，则会导致错误状态。虚拟视频 SSRC 在客户端初始化期间分配，并且虚拟 SSRC 的数量固定为请求的初始视频串数量。
签名
canvases: MediaApiCanvas[];
详细信息
| 类型 | MediaApiCanvas[] |
|---|---|
| 可选 | 否 |
| 只读 | 否 |
属性签名 LayoutModel.canvases
如未另行说明，那么本页面中的内容已根据知识共享署名 4.0 许可获得了许可，并且代码示例已根据 Apache 2.0 许可获得了许可。有关详情，请参阅 Google 开发者网站政策。Java 是 Oracle 和/或其关联公司的注册商标。
最后更新时间 (UTC)：2025-07-25。
[null,null,["最后更新时间 (UTC)：2025-07-25。"],[],[],null,["# Property signature LayoutModel.canvases\n\n| **Developer Preview:** Available as part of the [Google Workspace Developer Preview Program](https://developers.google.com/workspace/preview), which grants early access to certain features. \n|\n| **To use the Meet Media API to access real-time media from a conference, the Google Cloud project, OAuth principal, and all participants in the conference must be enrolled in the Developer Preview Program.**\n\nCanvases to assign videos to virtual SSRCs. Providing more canvases than exists\nvirtual streams will result in an error status. Virtual video SSRCs are\nallocated during initialization of the client and the number of virtual SSRCs is\nfixed to the initial number of requested video streams.\n\nSignature\n---------\n\n canvases: MediaApiCanvas[];\n\nDetails\n-------\n\n| Type | [MediaApiCanvas](./media_api.mediaapicanvas.md)`[]` |\n| Optional | No |\n| Readonly | No |\n|----------|-----------------------------------------------------|"]]