延迟0.1播放 规避首帧花屏问题

Introduce/Record/INVideoExportController.swift

@@ -225,6 +225,7 @@ class INVideoExportController: BFBaseViewController {
                 if let fileUrl = url {
                     let item = AVPlayerItem(url: fileUrl)
                     sself.avplayer.replaceCurrentItem(with: item)
+                    usleep(1000)
                     sself.avplayer.play()
                     sself.playerLayer.borderColor = ThemeStyleColor.cgColor