diff --git a/libxsync b/libxsync
index 211732f..14ad103 160000
--- a/libxsync
+++ b/libxsync
@@ -1 +1 @@
-Subproject commit 211732f79e8ab42abb806fd77cd47c3272902c6b
+Subproject commit 14ad103276e925c0f9808fc66dc2089f8bc3ac70
diff --git a/mainwindow.cpp b/mainwindow.cpp
index 00b371b..3d84cfb 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -328,8 +328,8 @@ void MainWindow::construct_reg_table() {  //
   push_reg(ui->gridLayoutWidget, regoff++, "record_sig_gen_exposure_time", reg::record_sig_gen_exposure_time, 0, kreg_val_type_decimal);
   push_reg(ui->gridLayoutWidget, regoff++, "record_sig_gen_exposure_offset_time", reg::record_sig_gen_exposure_offset_time, 0, kreg_val_type_decimal);
   push_reg(ui->gridLayoutWidget, regoff++, "record_sig_gen_manual_ctrl", reg::record_sig_gen_manual_ctrl, 0, kreg_val_type_decimal);
-  push_reg(ui->gridLayoutWidget, regoff++, "record_sig_gen_start_timecode_snapshot0", reg::record_sig_gen_start_timecode_snapshot0, 0, kreg_val_type_decimal);
-  push_reg(ui->gridLayoutWidget, regoff++, "record_sig_gen_start_timecode_snapshot1", reg::record_sig_gen_start_timecode_snapshot1, 0, kreg_val_type_decimal);
+  push_reg(ui->gridLayoutWidget, regoff++, "record_sig_gen_timecode_snapshot0", reg::record_sig_gen_timecode_snapshot0, 0, kreg_val_type_decimal);
+  push_reg(ui->gridLayoutWidget, regoff++, "record_sig_gen_timecode_snapshot1", reg::record_sig_gen_timecode_snapshot1, 0, kreg_val_type_decimal);
   push_reg(ui->gridLayoutWidget, regoff++, "record_sig_gen_record_state", reg::record_sig_gen_record_state, 0, kreg_val_type_decimal);
 
   push_reg(ui->gridLayoutWidget, regoff++, "camera_sync_module", reg::camera_sync_module, 0, kreg_val_type_hex);
@@ -838,6 +838,7 @@ void MainWindow::on_RecordSigGen_Read_clicked() {
   uint32_t         exposureTime;
   uint32_t         exposureOffsetTime;
   uint32_t         state;
+  XsyncTimecode_t  timecode_snapshot;
 
   DO_XSYNC_FUNC(Xsync::Ins().RecordSigGenerator_getContrlMode(mode));
   DO_XSYNC_FUNC(Xsync::Ins().RecordSigGenerator_getAutoStartTimecode(autoStartTimecode));
@@ -848,6 +849,7 @@ void MainWindow::on_RecordSigGen_Read_clicked() {
   DO_XSYNC_FUNC(Xsync::Ins().RecordSigGenerator_getRecordExposureTime(exposureTime));
   DO_XSYNC_FUNC(Xsync::Ins().RecordSigGenerator_getRecordExposureOffsetTime(exposureOffsetTime));
   DO_XSYNC_FUNC(Xsync::Ins().RecordSigGenerator_getRecordState(state));
+  DO_XSYNC_FUNC(Xsync::Ins().RecordSigGenerator_readTimecodeSnapshot(timecode_snapshot));
 
   ui->RecordSigGenerator_ContrlMode->setCurrentText(QString::fromStdString(ControlMode2Str(mode)));
   ui->RecordSigGenerator_AutoStartTimecode->setText(QString(XsyncTimecodeToStr(autoStartTimecode).c_str()));
@@ -859,6 +861,7 @@ void MainWindow::on_RecordSigGen_Read_clicked() {
   ui->RecordSigGenerator_RecordExposureTime->setText(QString::number(exposureTime));
   ui->RecordSigGenerator_RecordExposureOffsetTime->setText(QString::number(exposureOffsetTime));
   ui->RecordSigGenerator_RecordState->setText(QString::number(state));
+  ui->RecordSigGenerator_TimecodeSnapshot->setText(QString(XsyncTimecodeToStr(timecode_snapshot).c_str()));
 }
 void MainWindow::on_RecordSigGen_Write_clicked() {
   ControlMode_t    mode               = Str2ControlMode(ui->RecordSigGenerator_ContrlMode->currentText().toStdString());
@@ -871,6 +874,8 @@ void MainWindow::on_RecordSigGen_Write_clicked() {
   uint32_t         exposureTime       = ui->RecordSigGenerator_RecordExposureTime->text().toUInt();
   uint32_t         exposureOffsetTime = ui->RecordSigGenerator_RecordExposureOffsetTime->text().toUInt();
 
+  // RecordSigGenerator_readTimecodeSnapshot
+
   DO_XSYNC_FUNC(Xsync::Ins().RecordSigGenerator_setContrlMode(mode));
   DO_XSYNC_FUNC(Xsync::Ins().RecordSigGenerator_setAutoStartTimecode(autoStartTimecode));
   DO_XSYNC_FUNC(Xsync::Ins().RecordSigGenerator_setAutoStopTimecode(autoStopTimecode));
diff --git a/mainwindow.ui b/mainwindow.ui
index 24c4f72..b0b3b08 100644
--- a/mainwindow.ui
+++ b/mainwindow.ui
@@ -2323,6 +2323,41 @@
          <string>录制状态</string>
         </property>
        </widget>
+       <widget class="QLabel" name="label_18">
+        <property name="geometry">
+         <rect>
+          <x>30</x>
+          <y>110</y>
+          <width>121</width>
+          <height>31</height>
+         </rect>
+        </property>
+        <property name="text">
+         <string>启停事件时间戳快照</string>
+        </property>
+       </widget>
+       <widget class="QLineEdit" name="RecordSigGenerator_TimecodeSnapshot">
+        <property name="geometry">
+         <rect>
+          <x>160</x>
+          <y>110</y>
+          <width>141</width>
+          <height>31</height>
+         </rect>
+        </property>
+        <property name="font">
+         <font>
+          <weight>75</weight>
+          <bold>true</bold>
+         </font>
+        </property>
+        <property name="text">
+         <string/>
+        </property>
+        <property name="readOnly">
+         <bool>true</bool>
+        </property>
+       </widget>
       </widget>
       <widget class="QWidget" name="tab">
        <attribute name="title">