diff --git a/src/mxf_op1a/OP1ADataTrack.cpp b/src/mxf_op1a/OP1ADataTrack.cpp
index 0d579368..1ae4f33a 100644
--- a/src/mxf_op1a/OP1ADataTrack.cpp
+++ b/src/mxf_op1a/OP1ADataTrack.cpp
@@ -85,7 +85,7 @@ void OP1ADataTrack::WriteSamplesInt(const unsigned char *data, uint32_t size, ui
 
     mCPManager->WriteSamples(mTrackIndex, data, size, num_samples);
     if (!mConstantDataSize && !mMaxDataSize)
-        mIndexTable->AddIndexEntry(mTrackIndex, mPosition, 0, 0, 0, true, false);
+        mIndexTable->AddIndexEntry(mTrackIndex, mPosition, 0, 0, 0x80, true, false);
 
     mPosition++;
 }
diff --git a/src/mxf_op1a/OP1ARDD36Track.cpp b/src/mxf_op1a/OP1ARDD36Track.cpp
index bb2b3a27..0624de9d 100644
--- a/src/mxf_op1a/OP1ARDD36Track.cpp
+++ b/src/mxf_op1a/OP1ARDD36Track.cpp
@@ -90,7 +90,7 @@ void OP1ARDD36Track::WriteSamplesInt(const unsigned char *data, uint32_t size, u
     }
 
     mCPManager->WriteSamples(mTrackIndex, data, size, num_samples);
-    mIndexTable->AddIndexEntry(mTrackIndex, mPosition, 0, 0, 0, true, false);
+    mIndexTable->AddIndexEntry(mTrackIndex, mPosition, 0, 0, 0x80, true, false);
 
     mPosition++;
 }
diff --git a/src/mxf_op1a/OP1ATimedTextTrack.cpp b/src/mxf_op1a/OP1ATimedTextTrack.cpp
index 83332e32..a515433b 100644
--- a/src/mxf_op1a/OP1ATimedTextTrack.cpp
+++ b/src/mxf_op1a/OP1ATimedTextTrack.cpp
@@ -121,7 +121,7 @@ void OP1ATimedTextTrack::WriteIndexTable(File *mxf_file, Partition *index_partit
     index_segment.setIndexSID(mIndexSID);
     index_segment.setBodySID(mBodySID);
     index_segment.setEditUnitByteCount(0);
-    index_segment.appendIndexEntry(0, 0, 0, 0, vector<uint32_t>(), vector<mxfRational>());
+    index_segment.appendIndexEntry(0, 0, 0x80, 0, vector<uint32_t>(), vector<mxfRational>());
 
     index_segment.write(mxf_file, index_partition, 0);
 }
diff --git a/src/mxf_op1a/OP1AVC2Track.cpp b/src/mxf_op1a/OP1AVC2Track.cpp
index aed3938f..d62f791d 100644
--- a/src/mxf_op1a/OP1AVC2Track.cpp
+++ b/src/mxf_op1a/OP1AVC2Track.cpp
@@ -94,7 +94,7 @@ void OP1AVC2Track::WriteSamplesInt(const unsigned char *data, uint32_t size, uin
     mWriterHelper.ProcessFrame(data, size, &data_array, &array_size);
 
     mCPManager->WriteSample(mTrackIndex, data_array, array_size);
-    mIndexTable->AddIndexEntry(mTrackIndex, mWriterHelper.GetProcessFrameCount() - 1, 0, 0, 0, true, false);
+    mIndexTable->AddIndexEntry(mTrackIndex, mWriterHelper.GetProcessFrameCount() - 1, 0, 0, 0x80, true, false);
 }
 
 void OP1AVC2Track::CompleteWrite()
diff --git a/src/rdd9_mxf/RDD9DataTrack.cpp b/src/rdd9_mxf/RDD9DataTrack.cpp
index c1582b6a..41074234 100644
--- a/src/rdd9_mxf/RDD9DataTrack.cpp
+++ b/src/rdd9_mxf/RDD9DataTrack.cpp
@@ -85,7 +85,7 @@ void RDD9DataTrack::WriteSamplesInt(const unsigned char *data, uint32_t size, ui
 
     mCPManager->WriteSamples(mTrackIndex, data, size, num_samples);
     if (!mConstantDataSize && !mMaxDataSize)
-        mIndexTable->AddIndexEntry(mTrackIndex, mPosition, 0, 0, 0, true);
+        mIndexTable->AddIndexEntry(mTrackIndex, mPosition, 0, 0, 0x80, true);
 
     mPosition++;
 }
diff --git a/test/imf/test_rdd36_1.md5 b/test/imf/test_rdd36_1.md5
index 38bca78b..05b5e7a5 100644
--- a/test/imf/test_rdd36_1.md5
+++ b/test/imf/test_rdd36_1.md5
@@ -1 +1 @@
-12699b79cc1a650272484b35f84138b7
\ No newline at end of file
+3acbc8890630ec93e6a5df250329941e
\ No newline at end of file
diff --git a/test/imf/test_rdd36_2.md5 b/test/imf/test_rdd36_2.md5
index ac0e8d59..5ae2336e 100644
--- a/test/imf/test_rdd36_2.md5
+++ b/test/imf/test_rdd36_2.md5
@@ -1 +1 @@
-7d18f1541cb15931fd0c595782d675ef
\ No newline at end of file
+95c61d08221cda9e8830cd7db8e63a1b
\ No newline at end of file
diff --git a/test/imf/test_timed_text_1.md5 b/test/imf/test_timed_text_1.md5
index e5fbdbca..0c3e1be3 100644
--- a/test/imf/test_timed_text_1.md5
+++ b/test/imf/test_timed_text_1.md5
@@ -1 +1 @@
-f1de0c5f1ce50a6a318759d59b3447fc
\ No newline at end of file
+4a7be872d08d0c7888b248af1e0edec7
\ No newline at end of file
diff --git a/test/imf/test_timed_text_2.md5 b/test/imf/test_timed_text_2.md5
index e5fbdbca..0c3e1be3 100644
--- a/test/imf/test_timed_text_2.md5
+++ b/test/imf/test_timed_text_2.md5
@@ -1 +1 @@
-f1de0c5f1ce50a6a318759d59b3447fc
\ No newline at end of file
+4a7be872d08d0c7888b248af1e0edec7
\ No newline at end of file
diff --git a/test/mxf_op1a/rdd36_422.md5 b/test/mxf_op1a/rdd36_422.md5
index 8a08de93..dc3aba80 100644
--- a/test/mxf_op1a/rdd36_422.md5
+++ b/test/mxf_op1a/rdd36_422.md5
@@ -1 +1 @@
-e812963248ca564aa674d018a70e8126
\ No newline at end of file
+193bf8a8c71447893fc16be1984774e2
\ No newline at end of file
diff --git a/test/mxf_op1a/rdd36_422_itu2020.md5 b/test/mxf_op1a/rdd36_422_itu2020.md5
index 83f3cbfd..5b8ddc1b 100644
--- a/test/mxf_op1a/rdd36_422_itu2020.md5
+++ b/test/mxf_op1a/rdd36_422_itu2020.md5
@@ -1 +1 @@
-2d9f8fae5c3ac35f36fa87b7e7c2f775
\ No newline at end of file
+84365f12d4d447d267a15cb533287ec9
\ No newline at end of file
diff --git a/test/mxf_op1a/rdd36_4444.md5 b/test/mxf_op1a/rdd36_4444.md5
index 4f36027d..2d4ced00 100644
--- a/test/mxf_op1a/rdd36_4444.md5
+++ b/test/mxf_op1a/rdd36_4444.md5
@@ -1 +1 @@
-6c4d3c5cb5ddc0809b5bc37c188cbeb0
\ No newline at end of file
+19eae5f0a0e92abce795d13d04beafa6
\ No newline at end of file
diff --git a/test/mxf_op1a/vc2.md5 b/test/mxf_op1a/vc2.md5
index 607d1246..bbb4fe97 100644
--- a/test/mxf_op1a/vc2.md5
+++ b/test/mxf_op1a/vc2.md5
@@ -1 +1 @@
-fa630b0f6cd3f728423e9bd1f3f8b000
\ No newline at end of file
+3822bc4fd04636bccf9cd6eec822e5f8
\ No newline at end of file
diff --git a/test/rdd6/test3.md5 b/test/rdd6/test3.md5
index e90703fc..3a986e69 100644
--- a/test/rdd6/test3.md5
+++ b/test/rdd6/test3.md5
@@ -1 +1 @@
-726a2adb3a8befd58b358122125d5b96
\ No newline at end of file
+b91a0bd9862ca7221a69e2d88b918565
\ No newline at end of file
diff --git a/test/timed_text/test_1.md5 b/test/timed_text/test_1.md5
index a644d003..087cb918 100644
--- a/test/timed_text/test_1.md5
+++ b/test/timed_text/test_1.md5
@@ -1 +1 @@
-b966c37759ab39ccb3c16efe1a398aac
\ No newline at end of file
+c23f74620cb1a0c5190668f98ddec949
\ No newline at end of file
diff --git a/test/timed_text/test_10.md5 b/test/timed_text/test_10.md5
index 3b262df0..254e5c89 100644
--- a/test/timed_text/test_10.md5
+++ b/test/timed_text/test_10.md5
@@ -1 +1 @@
-74e83126d14612acb06c9d29a533497e
\ No newline at end of file
+b7b9c9c9cb099abf7bb28db78ff520ce
\ No newline at end of file
diff --git a/test/timed_text/test_2.md5 b/test/timed_text/test_2.md5
index 56fc7f0f..c6a91139 100644
--- a/test/timed_text/test_2.md5
+++ b/test/timed_text/test_2.md5
@@ -1 +1 @@
-9367fd12af13130cd6c6bfae54961cda
\ No newline at end of file
+df83cc4ff397305a3d31217961e20748
\ No newline at end of file
diff --git a/test/timed_text/test_3.md5 b/test/timed_text/test_3.md5
index f935323f..05d711ed 100644
--- a/test/timed_text/test_3.md5
+++ b/test/timed_text/test_3.md5
@@ -1 +1 @@
-b538c2e6aa0682f763c01774b5dc6403
\ No newline at end of file
+b1316e823a2231a6e5e36b9ca2f83030
\ No newline at end of file
diff --git a/test/timed_text/test_4.md5 b/test/timed_text/test_4.md5
index 4963e1e1..7a897d2a 100644
--- a/test/timed_text/test_4.md5
+++ b/test/timed_text/test_4.md5
@@ -1 +1 @@
-58f3cde2827bf946aae1810c2bf22eb1
\ No newline at end of file
+e01ab8abe22425ebb0eab6685726202d
\ No newline at end of file
diff --git a/test/timed_text/test_5.md5 b/test/timed_text/test_5.md5
index ef99b96f..83b497d0 100644
--- a/test/timed_text/test_5.md5
+++ b/test/timed_text/test_5.md5
@@ -1 +1 @@
-48d74cb2d54e9c0d9fdded4738721563
\ No newline at end of file
+d8a9d440fffecd04edfd556b4190132e
\ No newline at end of file
diff --git a/test/timed_text/test_6.md5 b/test/timed_text/test_6.md5
index 258613f2..0c7271c9 100644
--- a/test/timed_text/test_6.md5
+++ b/test/timed_text/test_6.md5
@@ -1 +1 @@
-1bccbf669bcdc9edd7be8c75027f8208
\ No newline at end of file
+846b1b1de4dddcd7c3e1eeacec55a0bc
\ No newline at end of file
diff --git a/test/timed_text/test_7.md5 b/test/timed_text/test_7.md5
index aaec624a..4fae1d36 100644
--- a/test/timed_text/test_7.md5
+++ b/test/timed_text/test_7.md5
@@ -1 +1 @@
-7af5f601d535a4ad485f0d1627f91b04
\ No newline at end of file
+f2ee69b86be88ba526259e1b544e460e
\ No newline at end of file
diff --git a/test/timed_text/test_9.md5 b/test/timed_text/test_9.md5
index 56fc7f0f..c6a91139 100644
--- a/test/timed_text/test_9.md5
+++ b/test/timed_text/test_9.md5
@@ -1 +1 @@
-9367fd12af13130cd6c6bfae54961cda
\ No newline at end of file
+df83cc4ff397305a3d31217961e20748
\ No newline at end of file