[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Page](./puppeteer.protocol.page.md) > [ScreencastFrameAckRequest](./puppeteer.protocol.page.screencastframeackrequest.md) ## Protocol.Page.ScreencastFrameAckRequest interface Signature: ```typescript export interface ScreencastFrameAckRequest ``` ## Properties | Property | Type | Description | | --- | --- | --- | | [sessionId](./puppeteer.protocol.page.screencastframeackrequest.sessionid.md) | [integer](./puppeteer.protocol.integer.md) | Frame number. |