打开字幕开关的时候 主动调用一次字幕显示

BFRecordScreenKit/Classes/RecordScreen/Controller/BFRecordScreenController.swift

@@ -805,6 +805,8 @@ public class BFRecordScreenController: BFBaseViewController {
             } else { // 上
                 subtitleLabel.frame = CGRect(x: leftPoint, y: cScreenHeigth * 0.12, width: cScreenWidth - 37 * 2, height: height)
             }
+            //打开的时候主动调用一次显示字幕
+            updateSubtitle(time: currentAssetProgress)
         } else {
             subtitleLabel.text = ""
         }