diff --git a/Source/Common/Output_Xml.cpp b/Source/Common/Output_Xml.cpp
index 768c9302..9773bfbb 100644
--- a/Source/Common/Output_Xml.cpp
+++ b/Source/Common/Output_Xml.cpp
@@ -577,12 +577,16 @@ return_value Output_Xml(ostream& Out, std::vector<file*>& PerFile, bitset<Option
                     }
                 }
                 {
-                    auto AbstBf = abst_bf(File->PerFrame.back()->AbstBf);
-                    if (AbstBf.HasAbsoluteTrackNumberValue())
+                    auto FrameNumber = (PerChange_Next != File->PerChange.end() ? (*PerChange_Next)->FrameNumber : (MediaInfo_int64u)File->PerFrame.size())-1;
+                    if (FrameNumber < File->PerFrame.size())
                     {
-                        Text += " abst_end=\"";
-                        Text += to_string(AbstBf.AbsoluteTrackNumber());
-                        Text += '\"';
+                        auto AbstBf = abst_bf(File->PerFrame[FrameNumber]->AbstBf);
+                        if (AbstBf.HasAbsoluteTrackNumberValue())
+                        {
+                            Text += " abst_end=\"";
+                            Text += to_string(AbstBf.AbsoluteTrackNumber());
+                            Text += '\"';
+                        }
                     }
                 }
                 if (Change->Width && Change->Height)
diff --git a/tools/dvrescue.xsd b/tools/dvrescue.xsd
index 59004827..6092e799 100644
--- a/tools/dvrescue.xsd
+++ b/tools/dvrescue.xsd
@@ -179,6 +179,20 @@
         </xsd:documentation>
       </xsd:annotation>
     </xsd:attribute>
+    <xsd:attribute name="abst" type="xsd:string">
+      <xsd:annotation>
+        <xsd:documentation xml:lang="en">
+          Absolute Timecode for start of sequence.
+        </xsd:documentation>
+      </xsd:annotation>
+    </xsd:attribute>
+    <xsd:attribute name="abst_end" type="xsd:string">
+      <xsd:annotation>
+        <xsd:documentation xml:lang="en">
+          Absolute Timecode of end of sequence.
+        </xsd:documentation>
+      </xsd:annotation>
+    </xsd:attribute>
     <xsd:attribute name="size" type="sizeType"/>
     <xsd:attribute name="pixel_format" type="pixel_formatType"/>
     <xsd:attribute name="video_rate" type="video_rateType"/>