diff --git a/lib/talk/startChart/proto/talk_data.pb.dart b/lib/talk/startChart/proto/talk_data.pb.dart
index 8097a685..d39cd33e 100644
--- a/lib/talk/startChart/proto/talk_data.pb.dart
+++ b/lib/talk/startChart/proto/talk_data.pb.dart
@@ -23,6 +23,7 @@ class TalkData extends $pb.GeneratedMessage {
   factory TalkData({
     TalkData_ContentTypeE? contentType,
     $core.List<$core.int>? content,
+    $core.int? durationMs,
   }) {
     final $result = create();
     if (contentType != null) {
@@ -31,6 +32,9 @@ class TalkData extends $pb.GeneratedMessage {
     if (content != null) {
       $result.content = content;
     }
+    if (durationMs != null) {
+      $result.durationMs = durationMs;
+    }
     return $result;
   }
   TalkData._() : super();
@@ -40,6 +44,7 @@ class TalkData extends $pb.GeneratedMessage {
   static final $pb.BuilderInfo _i = $pb.BuilderInfo(_omitMessageNames ? '' : 'TalkData', package: const $pb.PackageName(_omitMessageNames ? '' : 'main'), createEmptyInstance: create)
     ..e<TalkData_ContentTypeE>(1, _omitFieldNames ? '' : 'ContentType', $pb.PbFieldType.OE, protoName: 'ContentType', defaultOrMaker: TalkData_ContentTypeE.Image, valueOf: TalkData_ContentTypeE.valueOf, enumValues: TalkData_ContentTypeE.values)
     ..a<$core.List<$core.int>>(2, _omitFieldNames ? '' : 'Content', $pb.PbFieldType.OY, protoName: 'Content')
+    ..a<$core.int>(3, _omitFieldNames ? '' : 'DurationMs', $pb.PbFieldType.OU3, protoName: 'DurationMs')
     ..hasRequiredFields = false
   ;
 
@@ -81,6 +86,18 @@ class TalkData extends $pb.GeneratedMessage {
   $core.bool hasContent() => $_has(1);
   @$pb.TagNumber(2)
   void clearContent() => clearField(2);
+
+  /// 时间 毫秒，例如第一帧视频，就是0ms，第2秒的第一帧，就是1000ms
+  /// 该字段仅用于协调音视频同步，而不是用于影响音视频播放时机
+  /// 对于对讲场景，应该根据网络延迟和设备性能自行决定缓冲时长，在满足播放条件时立即进行渲染。
+  @$pb.TagNumber(3)
+  $core.int get durationMs => $_getIZ(2);
+  @$pb.TagNumber(3)
+  set durationMs($core.int v) { $_setUnsignedInt32(2, v); }
+  @$pb.TagNumber(3)
+  $core.bool hasDurationMs() => $_has(2);
+  @$pb.TagNumber(3)
+  void clearDurationMs() => clearField(3);
 }
 
 
diff --git a/lib/talk/startChart/proto/talk_data.pbjson.dart b/lib/talk/startChart/proto/talk_data.pbjson.dart
index a9beab46..096262dc 100644
--- a/lib/talk/startChart/proto/talk_data.pbjson.dart
+++ b/lib/talk/startChart/proto/talk_data.pbjson.dart
@@ -19,6 +19,7 @@ const TalkData$json = {
   '2': [
     {'1': 'ContentType', '3': 1, '4': 1, '5': 14, '6': '.main.TalkData.ContentTypeE', '10': 'ContentType'},
     {'1': 'Content', '3': 2, '4': 1, '5': 12, '10': 'Content'},
+    {'1': 'DurationMs', '3': 3, '4': 1, '5': 13, '10': 'DurationMs'},
   ],
   '4': [TalkData_ContentTypeE$json],
 };
@@ -36,6 +37,7 @@ const TalkData_ContentTypeE$json = {
 /// Descriptor for `TalkData`. Decode as a `google.protobuf.DescriptorProto`.
 final $typed_data.Uint8List talkDataDescriptor = $convert.base64Decode(
     'CghUYWxrRGF0YRI9CgtDb250ZW50VHlwZRgBIAEoDjIbLm1haW4uVGFsa0RhdGEuQ29udGVudF'
-    'R5cGVFUgtDb250ZW50VHlwZRIYCgdDb250ZW50GAIgASgMUgdDb250ZW50Ii0KDENvbnRlbnRU'
-    'eXBlRRIJCgVJbWFnZRAAEggKBEgyNjQQARIICgRHNzExEAI=');
+    'R5cGVFUgtDb250ZW50VHlwZRIYCgdDb250ZW50GAIgASgMUgdDb250ZW50Eh4KCkR1cmF0aW9u'
+    'TXMYAyABKA1SCkR1cmF0aW9uTXMiLQoMQ29udGVudFR5cGVFEgkKBUltYWdlEAASCAoESDI2NB'
+    'ABEggKBEc3MTEQAg==');
 
diff --git a/lib/talk/startChart/proto/talk_data.proto b/lib/talk/startChart/proto/talk_data.proto
index 88b51996..5dcb93a0 100644
--- a/lib/talk/startChart/proto/talk_data.proto
+++ b/lib/talk/startChart/proto/talk_data.proto
@@ -14,4 +14,9 @@ message TalkData {
     };
     ContentTypeE ContentType = 1;
     bytes Content = 2;
+    // 时间 毫秒，例如第一帧视频，就是0ms，第2秒的第一帧，就是1000ms
+     // 该字段仅用于协调音视频同步，而不是用于影响音视频播放时机
+     // 对于对讲场景，应该根据网络延迟和设备性能自行决定缓冲时长，在满足播放条件时立即进行渲染。
+     uint32 DurationMs = 3;
+
 }