Base64-encoded image data for this frame (no data URI prefix).
Frame height in pixels.
Monotonically increasing frame index, starting at 0 for the first frame of a screencast session. Lets consumers detect ordering / dropped frames.
Frame width in pixels.
A single frame from a live screencast of the browser viewport.
Emitted by BaseBrowserAdapter.StartScreencast's callback. Backed by Chrome DevTools Protocol's
Page.screencastFrameevent on adapters that support it (e.g. PlaywrightBrowserAdapter); other adapters never emit frames.