Instance Property

framesRendered

真正送到繪圖的幀數（不含哨兵——哨兵已被 SDK mute 邏輯攔在繪圖前）。診斷：framesReceived 續增但 framesRendered 停 = 對方 mute；兩者皆停 = 斷線。來源：track.handleReceived(pixelBuffer:) 入口計數（RemoteParticipant.handleVideoFrameReceived）。統計不特判哨兵。

let framesRendered: UInt64