Merge branch 'master' of https://git.yishihui.com/iOS/BFRecordScreenKit

* 'master' of https://git.yishihui.com/iOS/BFRecordScreenKit:
  1，删除不在使用变量， 2，字幕时间延后300ms SDK 机制导致
  打开字幕识别代码

BFRecordScreenKit/Classes/RecordScreen/Controller/BFRecordScreenController.swift

@@ -793,17 +793,14 @@ public class BFRecordScreenController: BFBaseViewController {
             avatarView.beginRecord()
         }
 
-
-//        movie?.startProcessing()
-//        assetPlayer?.volume = 0
-//        DispatchQueue.global().async { [weak self] in
-//            guard let sself = self else {
-//                return
-//            }
-//            sself.speechTranscriberUtil?.delegate = sself
-//            sself.speechTranscriberUtil?.startTranscriber()
-//            sself.speechTranscriberUtil?.currItemModelIndex = Int32(sself.currItemModelIndex)
-//        }
+        DispatchQueue.global().async { [weak self] in
+            guard let sself = self else {
+                return
+            }
+            sself.speechTranscriberUtil?.delegate = sself
+            sself.speechTranscriberUtil?.startTranscriber()
+        }
+        
         if itemModels[currItemModelIndex].mediaType == .VIDEO {
             
             if !movieIsProcessing {
@@ -1429,8 +1426,10 @@ extension BFRecordScreenController: PQSpeechTranscriberUtilDelegate {
             // 1，保存字幕数据 begin_time是开始出现文字的时间，time 是结束文字出现的时间 单位都为毫秒，都是相对于录制音频数据整段时间。self.recorderManager.voiceModel?.startTime 为开始的录制的时间，开始和结束都要加上这个时差
 
             let newSubtitle = PQEditSubTitleModel()
-            newSubtitle.timelineIn = (self.recorderManager.voiceModel?.startTime ?? 0.0) + Float64(((payload?["begin_time"]) as? Int) ?? 0) / 1000.0
-            // 单位：毫秒。
+            
+            //这里加300ms 是因为返回结果为了切到字，时长提前一些时间，具体时间官方没说和原音频有关系。这里我们先延后300ms 单位：毫秒。
+            newSubtitle.timelineIn = (self.recorderManager.voiceModel?.startTime ?? 0.0) + Float64((((payload?["begin_time"]) as? Int) ?? 0) + 300) / 1000.0
+          
             newSubtitle.timelineOut = (self.recorderManager.voiceModel?.startTime ?? 0.0) + Float64(((payload?["time"]) as? Int) ?? 0) / 1000.0
             var showText = ((payload?["result"]) as? String) ?? ""
             if showText.count > subtitleMaxlength {