diff --git a/doc/ffmpeginfo.txt b/doc/ffmpeginfo.txt
index d4abafe..9b52c27 100644
--- a/doc/ffmpeginfo.txt
+++ b/doc/ffmpeginfo.txt
@@ -10,4 +10,6 @@ ffmpeg -i ipc.264 -vcodec copy -f mp4 -movflags frag_keyframe+empty_moov ipc_fra
 
 ffmpeg -i jt1078_3.h264 -c:v copy -f mp4 -movflags empty_moov+default_base_moof+frag_keyframe fragmented_base_moof_demo.mp4
 
+ffprobe -of json -show_frames jt1078_3.h264 > jt1078_3.json
+
 chrome://media-internals/
\ No newline at end of file
diff --git a/src/JT1078.FMp4.Test/JT1078ToFMp4Box_Test.cs b/src/JT1078.FMp4.Test/JT1078ToFMp4Box_Test.cs
index b71a4bb..58d9958 100644
--- a/src/JT1078.FMp4.Test/JT1078ToFMp4Box_Test.cs
+++ b/src/JT1078.FMp4.Test/JT1078ToFMp4Box_Test.cs
@@ -456,6 +456,7 @@ namespace JT1078.FMp4.Test
                 NalUnitType.PPS, 
                 NalUnitType.AUD};
             int i = 0;
+            List<H264NALU> h264NALUs = new List<H264NALU>();
             foreach (var package in packages)
             {
                 var otherStypBuffer = fMp4Encoder.EncoderStypBox();
@@ -467,14 +468,6 @@ namespace JT1078.FMp4.Test
                 //    continue;
                 //}
                 //int length = filterOtherNalus.Sum(s => s.RawData.Length);
-                foreach(var nalu in otherNalus)
-                {
-                    //H264 NALU slice first_mb_in_slice
-                    if ((nalu.RawData[1] & 0x80) == 0x80)
-                    {
-
-                    }
-                }
                 var flag = package.Label3.DataType == Protocol.Enums.JT1078DataType.视频I帧 ? 1u : 0u;        
                 var otherMoofBuffer = fMp4Encoder.EncoderMoofBox(otherNalus, package.Bodies.Length, package.Timestamp, package.LastFrameInterval, package.LastIFrameInterval, flag);
                 var otherMdatBuffer = fMp4Encoder.EncoderMdatBox(otherNalus, package.Bodies.Length);
@@ -488,6 +481,73 @@ namespace JT1078.FMp4.Test
             fileStream.Close();
         }
 
+        [Fact]
+        public void Test5()
+        {
+            FMp4Encoder fMp4Encoder = new FMp4Encoder();
+            H264Decoder h264Decoder = new H264Decoder();
+            var packages = ParseNALUTests();
+            var filepath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "H264", "JT1078_5.mp4");
+            if (File.Exists(filepath))
+            {
+                File.Delete(filepath);
+            }
+            using var fileStream = new FileStream(filepath, FileMode.OpenOrCreate, FileAccess.Write);
+            var ftyp = fMp4Encoder.EncoderFtypBox();
+            fileStream.Write(ftyp);
+            List<NalUnitType> filter = new List<NalUnitType>() {
+                NalUnitType.SPS,
+                NalUnitType.PPS,
+                NalUnitType.AUD
+            };
+            var iNalus=h264Decoder.ParseNALU(packages[0]);
+            //判断第一帧是否关键帧
+            var moov = fMp4Encoder.EncoderMoovBox(
+                iNalus.FirstOrDefault(f=>f.NALUHeader.NalUnitType== NalUnitType.SPS),
+                iNalus.FirstOrDefault(f => f.NALUHeader.NalUnitType == NalUnitType.PPS));
+            fileStream.Write(moov);
+
+            List<H264NALU> nalus = new List<H264NALU>();
+            foreach (var package in packages)
+            {
+                List<H264NALU> h264NALUs = h264Decoder.ParseNALU(package);
+                foreach (var nalu in h264NALUs)
+                {
+                    if (nalu.Slice)
+                    {
+                        //H264 NALU slice first_mb_in_slice
+                        nalus.Add(nalu);
+                    }
+                    else
+                    {
+                        if (nalus.Count > 0)
+                        {
+                            var iStypBuffer = fMp4Encoder.EncoderStypBox();
+                            fileStream.Write(iStypBuffer);
+                            var firstNalu = nalus[0];
+                            var flag = firstNalu.DataType == Protocol.Enums.JT1078DataType.视频I帧 ? 1u : 0u;
+                            int iSize = nalus.Where(w => w.DataType == Protocol.Enums.JT1078DataType.视频I帧)
+                                            .Sum(s => s.RawData.Length + s.StartCodePrefix.Length);
+                            List<int> sizes = new List<int>();
+                            sizes.Add(iSize);
+                            sizes = sizes.Concat(nalus.Where(w => w.DataType != Protocol.Enums.JT1078DataType.视频I帧)
+                                                .Select(s => s.RawData.Length + s.StartCodePrefix.Length).ToList())
+                                                .ToList();
+                            var iMoofBuffer = fMp4Encoder.EncoderMoofBox(sizes, firstNalu.Timestamp, firstNalu.LastFrameInterval, firstNalu.LastIFrameInterval, flag);
+                            var iMdatBuffer = fMp4Encoder.EncoderMdatBox(nalus.Select(s => s.RawData).ToList());
+                            var iSidxBuffer = fMp4Encoder.EncoderSidxBox(iMoofBuffer.Length + iMdatBuffer.Length, firstNalu.Timestamp, firstNalu.LastIFrameInterval, firstNalu.LastFrameInterval);
+                            fileStream.Write(iSidxBuffer);
+                            fileStream.Write(iMoofBuffer);
+                            fileStream.Write(iMdatBuffer);
+                            nalus.Clear();
+                        }
+                        nalus.Add(nalu);
+                    }
+                }
+            }
+            fileStream.Close();
+        }
+
         [Fact]
         public void tkhd_width_height_test()
         {
diff --git a/src/JT1078.FMp4/Boxs/MovieFragmentBox.cs b/src/JT1078.FMp4/Boxs/MovieFragmentBox.cs
index d5837ae..92efd5a 100644
--- a/src/JT1078.FMp4/Boxs/MovieFragmentBox.cs
+++ b/src/JT1078.FMp4/Boxs/MovieFragmentBox.cs
@@ -38,6 +38,12 @@ namespace JT1078.FMp4
                 TrackFragmentBox.ToBuffer(ref writer);
             }
             End(ref writer);
+            var moofOffsetPosition = writer.GetMoofOffsetPosition();
+            if (moofOffsetPosition > 0)
+            {
+                writer.WriteUInt64Return((ulong)writer.GetCurrentPosition(), moofOffsetPosition);
+            }
+            writer.ClearMoofOffsetPosition();
             var trunOffsetPosition = writer.GetTrunOffsetPosition();
             if (trunOffsetPosition > 0)
             {
diff --git a/src/JT1078.FMp4/Boxs/MovieFragmentRandomAccessBox.cs b/src/JT1078.FMp4/Boxs/MovieFragmentRandomAccessBox.cs
index 1ad7359..0b86a2d 100644
--- a/src/JT1078.FMp4/Boxs/MovieFragmentRandomAccessBox.cs
+++ b/src/JT1078.FMp4/Boxs/MovieFragmentRandomAccessBox.cs
@@ -38,7 +38,7 @@ namespace JT1078.FMp4
                 MovieFragmentRandomAccessOffsetBox.ToBuffer(ref writer);
             }
             End(ref writer);
-            var mfraSizePosition = writer.GetMfraSizePositionn();
+            var mfraSizePosition = writer.GetMfraSizePosition();
             if (mfraSizePosition > 0)
             {
                 writer.WriteInt32Return(writer.GetCurrentPosition() - SizePosition, mfraSizePosition);
diff --git a/src/JT1078.FMp4/Boxs/TrackFragmentHeaderBox.cs b/src/JT1078.FMp4/Boxs/TrackFragmentHeaderBox.cs
index ebb721d..55e7e62 100644
--- a/src/JT1078.FMp4/Boxs/TrackFragmentHeaderBox.cs
+++ b/src/JT1078.FMp4/Boxs/TrackFragmentHeaderBox.cs
@@ -60,7 +60,16 @@ namespace JT1078.FMp4
             writer.WriteUInt32(TrackID);
             if ((FMp4Constants.TFHD_FLAG_BASE_DATA_OFFSET & Flags) > 0)
             {
-                writer.WriteUInt64(BaseDataOffset);
+                if (BaseDataOffset > 0)
+                {
+                    writer.WriteUInt64(BaseDataOffset);
+                }
+                else
+                {
+                    //程序自动计算
+                    writer.CreateMoofOffsetPosition();
+                    writer.Skip(8, out _);
+                }
             }
             if ((FMp4Constants.TFHD_FLAG_SAMPLE_DESCRIPTION_INDEX & Flags) > 0)
             {
diff --git a/src/JT1078.FMp4/FMp4Encoder.cs b/src/JT1078.FMp4/FMp4Encoder.cs
index 23c3dbe..fe573f4 100644
--- a/src/JT1078.FMp4/FMp4Encoder.cs
+++ b/src/JT1078.FMp4/FMp4Encoder.cs
@@ -108,7 +108,9 @@ namespace JT1078.FMp4
             }
         }
 
-        uint IframeIntervalCache = 259960;
+        ulong IframeIntervalCache = 259960;
+
+        ulong cts = 0;
 
         /// <summary>
         /// 编码sidx盒子
@@ -122,7 +124,9 @@ namespace JT1078.FMp4
             {
                 SegmentIndexBox segmentIndexBox = new SegmentIndexBox(1);
                 segmentIndexBox.ReferenceID = 1;
-                segmentIndexBox.EarliestPresentationTime = timestamp;
+                cts = cts == 0 ? 2160000 : (cts + cts);
+                segmentIndexBox.EarliestPresentationTime = cts;
+                IframeIntervalCache += frameInterval;
                 segmentIndexBox.SegmentIndexs = new List<SegmentIndexBox.SegmentIndex>()
                 {
                      new SegmentIndexBox.SegmentIndex
@@ -228,6 +232,88 @@ namespace JT1078.FMp4
             }
         }
 
+        /// <summary>
+        /// 编码moov盒子
+        /// </summary>
+        /// <returns></returns>
+        public byte[] EncoderMoovBox(in H264NALU sps, in H264NALU pps)
+        {
+            byte[] buffer = FMp4ArrayPool.Rent(sps.RawData.Length+ pps.RawData.Length  + 4096);
+            FMp4MessagePackWriter writer = new FMp4MessagePackWriter(buffer);
+            try
+            {
+                ExpGolombReader h264GolombReader = new ExpGolombReader(sps.RawData);
+                var spsInfo = h264GolombReader.ReadSPS();
+                //moov
+                MovieBox movieBox = new MovieBox();
+                movieBox.MovieHeaderBox = new MovieHeaderBox(0, 2);
+                movieBox.MovieHeaderBox.CreationTime = 0;
+                movieBox.MovieHeaderBox.ModificationTime = 0;
+                movieBox.MovieHeaderBox.Duration = 0;
+                movieBox.MovieHeaderBox.Timescale = 1000;
+                movieBox.MovieHeaderBox.NextTrackID = 99;
+                movieBox.TrackBox = new TrackBox();
+                movieBox.TrackBox.TrackHeaderBox = new TrackHeaderBox(0, 3);
+                movieBox.TrackBox.TrackHeaderBox.CreationTime = 0;
+                movieBox.TrackBox.TrackHeaderBox.ModificationTime = 0;
+                movieBox.TrackBox.TrackHeaderBox.TrackID = 1;
+                movieBox.TrackBox.TrackHeaderBox.Duration = 0;
+                movieBox.TrackBox.TrackHeaderBox.TrackIsAudio = false;
+                movieBox.TrackBox.TrackHeaderBox.Width = (uint)spsInfo.width;
+                movieBox.TrackBox.TrackHeaderBox.Height = (uint)spsInfo.height;
+                movieBox.TrackBox.MediaBox = new MediaBox();
+                movieBox.TrackBox.MediaBox.MediaHeaderBox = new MediaHeaderBox();
+                movieBox.TrackBox.MediaBox.MediaHeaderBox.CreationTime = 0;
+                movieBox.TrackBox.MediaBox.MediaHeaderBox.ModificationTime = 0;
+                movieBox.TrackBox.MediaBox.MediaHeaderBox.Timescale = 1200000;
+                movieBox.TrackBox.MediaBox.MediaHeaderBox.Duration = 0;
+                movieBox.TrackBox.MediaBox.HandlerBox = new HandlerBox();
+                movieBox.TrackBox.MediaBox.HandlerBox.HandlerType = HandlerType.vide;
+                movieBox.TrackBox.MediaBox.HandlerBox.Name = "VideoHandler";
+                movieBox.TrackBox.MediaBox.MediaInformationBox = new MediaInformationBox();
+                movieBox.TrackBox.MediaBox.MediaInformationBox.VideoMediaHeaderBox = new VideoMediaHeaderBox();
+                movieBox.TrackBox.MediaBox.MediaInformationBox.DataInformationBox = new DataInformationBox();
+                movieBox.TrackBox.MediaBox.MediaInformationBox.DataInformationBox.DataReferenceBox = new DataReferenceBox();
+                movieBox.TrackBox.MediaBox.MediaInformationBox.DataInformationBox.DataReferenceBox.DataEntryBoxes = new List<DataEntryBox>();
+                movieBox.TrackBox.MediaBox.MediaInformationBox.DataInformationBox.DataReferenceBox.DataEntryBoxes.Add(new DataEntryUrlBox(1));
+                movieBox.TrackBox.MediaBox.MediaInformationBox.SampleTableBox = new SampleTableBox();
+                movieBox.TrackBox.MediaBox.MediaInformationBox.SampleTableBox.SampleDescriptionBox = new SampleDescriptionBox();
+                movieBox.TrackBox.MediaBox.MediaInformationBox.SampleTableBox.SampleDescriptionBox.SampleEntries = new List<SampleEntry>();
+                AVC1SampleEntry avc1 = new AVC1SampleEntry();
+                avc1.AVCConfigurationBox = new AVCConfigurationBox();
+                //h264
+                avc1.Width = (ushort)movieBox.TrackBox.TrackHeaderBox.Width;
+                avc1.Height = (ushort)movieBox.TrackBox.TrackHeaderBox.Height;
+                avc1.AVCConfigurationBox.AVCLevelIndication = spsInfo.levelIdc;
+                avc1.AVCConfigurationBox.AVCProfileIndication = spsInfo.profileIdc;
+                avc1.AVCConfigurationBox.ProfileCompatibility = (byte)spsInfo.profileCompat;
+                avc1.AVCConfigurationBox.PPSs = new List<byte[]>() { pps.RawData };
+                avc1.AVCConfigurationBox.SPSs = new List<byte[]>() { sps.RawData };
+                movieBox.TrackBox.MediaBox.MediaInformationBox.SampleTableBox.SampleDescriptionBox.SampleEntries.Add(avc1);
+                movieBox.TrackBox.MediaBox.MediaInformationBox.SampleTableBox.TimeToSampleBox = new TimeToSampleBox();
+                movieBox.TrackBox.MediaBox.MediaInformationBox.SampleTableBox.SyncSampleBox = new SyncSampleBox();
+                movieBox.TrackBox.MediaBox.MediaInformationBox.SampleTableBox.SampleToChunkBox = new SampleToChunkBox();
+                movieBox.TrackBox.MediaBox.MediaInformationBox.SampleTableBox.SampleSizeBox = new SampleSizeBox();
+                movieBox.TrackBox.MediaBox.MediaInformationBox.SampleTableBox.ChunkOffsetBox = new ChunkOffsetBox();
+                movieBox.MovieExtendsBox = new MovieExtendsBox();
+                movieBox.MovieExtendsBox.TrackExtendsBoxs = new List<TrackExtendsBox>();
+                TrackExtendsBox trex = new TrackExtendsBox();
+                trex.TrackID = 1;
+                trex.DefaultSampleDescriptionIndex = 1;
+                trex.DefaultSampleDuration = 0;
+                trex.DefaultSampleSize = 0;
+                trex.DefaultSampleFlags = 0;
+                movieBox.MovieExtendsBox.TrackExtendsBoxs.Add(trex);
+                movieBox.ToBuffer(ref writer);
+                var data = writer.FlushAndGetArray();
+                return data;
+            }
+            finally
+            {
+                FMp4ArrayPool.Return(buffer);
+            }
+        }
+
         /// <summary>
         /// 编码Moof盒子
         /// </summary>
@@ -283,6 +369,67 @@ namespace JT1078.FMp4
             }
         }
 
+        /// <summary>
+        /// 编码Moof盒子
+        /// </summary>
+        /// <returns></returns>
+        public byte[] EncoderMoofBox(List<int> naluSzies, ulong timestamp, uint frameInterval, uint IframeInterval, uint keyframeFlag)
+        {
+            byte[] buffer = FMp4ArrayPool.Rent(4096);
+            FMp4MessagePackWriter writer = new FMp4MessagePackWriter(buffer);
+            try
+            {
+                var movieFragmentBox = new MovieFragmentBox();
+                movieFragmentBox.MovieFragmentHeaderBox = new MovieFragmentHeaderBox();
+                movieFragmentBox.MovieFragmentHeaderBox.SequenceNumber = sn++;
+                movieFragmentBox.TrackFragmentBox = new TrackFragmentBox();
+                //0x39 写文件
+                //0x02 分段
+                //0x2003a
+                movieFragmentBox.TrackFragmentBox.TrackFragmentHeaderBox = new TrackFragmentHeaderBox(0x2003a);
+                movieFragmentBox.TrackFragmentBox.TrackFragmentHeaderBox.TrackID = 1;
+                movieFragmentBox.TrackFragmentBox.TrackFragmentHeaderBox.SampleDescriptionIndex = 1;
+                movieFragmentBox.TrackFragmentBox.TrackFragmentHeaderBox.DefaultSampleDuration = frameInterval;
+                //movieFragmentBox.TrackFragmentBox.TrackFragmentHeaderBox.DefaultSampleDuration = 48000;
+                movieFragmentBox.TrackFragmentBox.TrackFragmentHeaderBox.DefaultSampleSize = (uint)naluSzies[0];
+                movieFragmentBox.TrackFragmentBox.TrackFragmentHeaderBox.DefaultSampleFlags = 0x1010000;
+                movieFragmentBox.TrackFragmentBox.TrackFragmentBaseMediaDecodeTimeBox = new TrackFragmentBaseMediaDecodeTimeBox();
+                movieFragmentBox.TrackFragmentBox.TrackFragmentBaseMediaDecodeTimeBox.BaseMediaDecodeTime = cts;
+                //trun
+                //0x39 写文件
+                //0x02 分段
+                //0x205
+                //uint flag = 0x000200 | 0x000800 | 0x000400 | 0x000100;
+                uint flag = 0x0001;
+                if (!first)
+                {
+                    flag |= 0x0004;
+                    first = true;
+                }
+                flag |= 0x000200;
+                movieFragmentBox.TrackFragmentBox.TrackRunBox = new TrackRunBox(flags: flag);
+                movieFragmentBox.TrackFragmentBox.TrackRunBox.FirstSampleFlags = 33554432;
+                movieFragmentBox.TrackFragmentBox.TrackRunBox.TrackRunInfos = new List<TrackRunBox.TrackRunInfo>();
+                foreach(var size in naluSzies)
+                {
+                    movieFragmentBox.TrackFragmentBox.TrackRunBox.TrackRunInfos.Add(new TrackRunBox.TrackRunInfo()
+                    {
+                        //SampleDuration= frameInterval,
+                        SampleSize = (uint)size,
+                        //SampleCompositionTimeOffset = frameInterval,
+                        //SampleFlags = movieFragmentBox.TrackFragmentBox.TrackRunBox.Flags
+                    });
+                }
+                movieFragmentBox.ToBuffer(ref writer);
+                var data = writer.FlushAndGetArray();
+                return data;
+            }
+            finally
+            {
+                FMp4ArrayPool.Return(buffer);
+            }
+        }
+
         /// <summary>
         /// 编码Mdat盒子
         /// </summary>
@@ -305,6 +452,28 @@ namespace JT1078.FMp4
             }
         }
 
+        /// <summary>
+        /// 编码Mdat盒子
+        /// </summary>
+        /// <returns></returns>
+        public byte[] EncoderMdatBox(List<byte[]> nalus)
+        {
+            byte[] buffer = FMp4ArrayPool.Rent(nalus.Sum(s=>s.Length) + 4096);
+            FMp4MessagePackWriter writer = new FMp4MessagePackWriter(buffer);
+            try
+            {
+                var mediaDataBox = new MediaDataBox();
+                mediaDataBox.Data = nalus;
+                mediaDataBox.ToBuffer(ref writer);
+                var data = writer.FlushAndGetArray();
+                return data;
+            }
+            finally
+            {
+                FMp4ArrayPool.Return(buffer);
+            }
+        }
+
         /// <summary>
         /// 编码首个视频盒子
         /// </summary>
diff --git a/src/JT1078.FMp4/JT1078.FMp4.xml b/src/JT1078.FMp4/JT1078.FMp4.xml
index 3844fe2..9513cbf 100644
--- a/src/JT1078.FMp4/JT1078.FMp4.xml
+++ b/src/JT1078.FMp4/JT1078.FMp4.xml
@@ -1348,18 +1348,36 @@
             </summary>
             <returns></returns>
         </member>
+        <member name="M:JT1078.FMp4.FMp4Encoder.EncoderMoovBox(JT1078.Protocol.H264.H264NALU@,JT1078.Protocol.H264.H264NALU@)">
+            <summary>
+            编码moov盒子
+            </summary>
+            <returns></returns>
+        </member>
         <member name="M:JT1078.FMp4.FMp4Encoder.EncoderMoofBox(System.Collections.Generic.List{JT1078.Protocol.H264.H264NALU},System.Int32,System.UInt64,System.UInt32,System.UInt32,System.UInt32)">
             <summary>
             编码Moof盒子
             </summary>
             <returns></returns>
         </member>
+        <member name="M:JT1078.FMp4.FMp4Encoder.EncoderMoofBox(System.Collections.Generic.List{System.Int32},System.UInt64,System.UInt32,System.UInt32,System.UInt32)">
+            <summary>
+            编码Moof盒子
+            </summary>
+            <returns></returns>
+        </member>
         <member name="M:JT1078.FMp4.FMp4Encoder.EncoderMdatBox(System.Collections.Generic.List{JT1078.Protocol.H264.H264NALU},System.Int32)">
             <summary>
             编码Mdat盒子
             </summary>
             <returns></returns>
         </member>
+        <member name="M:JT1078.FMp4.FMp4Encoder.EncoderMdatBox(System.Collections.Generic.List{System.Byte[]})">
+            <summary>
+            编码Mdat盒子
+            </summary>
+            <returns></returns>
+        </member>
         <member name="M:JT1078.FMp4.FMp4Encoder.EncoderFirstVideoBox(JT1078.Protocol.JT1078Package)">
             <summary>
             编码首个视频盒子
diff --git a/src/JT1078.FMp4/MessagePack/FMp4MessagePackWriter.cs b/src/JT1078.FMp4/MessagePack/FMp4MessagePackWriter.cs
index 573159a..a3cf093 100644
--- a/src/JT1078.FMp4/MessagePack/FMp4MessagePackWriter.cs
+++ b/src/JT1078.FMp4/MessagePack/FMp4MessagePackWriter.cs
@@ -13,12 +13,14 @@ namespace JT1078.FMp4.MessagePack
         private int TrunDataOffsetPosition;
 
         private int MfraSizePosition;
+        private int MoofOffsetPosition;
 
         public FMp4MessagePackWriter(Span<byte> buffer)
         {
             this.writer = new FMp4BufferWriter(buffer);
             TrunDataOffsetPosition = 0;
             MfraSizePosition = 0;
+            MoofOffsetPosition = 0;
         }
         public byte[] FlushAndGetArray()
         {
@@ -109,6 +111,10 @@ namespace JT1078.FMp4.MessagePack
         {
             BinaryPrimitives.WriteUInt32BigEndian(writer.Written.Slice(position, 4), value);
         }
+        public void WriteUInt64Return(ulong value, int position)
+        {
+            BinaryPrimitives.WriteUInt64BigEndian(writer.Written.Slice(position, 8), value);
+        }
         public void WriteByteReturn(byte value, int position)
         {
             writer.Written[position] = value;
@@ -139,7 +145,7 @@ namespace JT1078.FMp4.MessagePack
             MfraSizePosition = writer.WrittenCount;
         }
 
-        public int GetMfraSizePositionn()
+        public int GetMfraSizePosition()
         {
             return MfraSizePosition;
         }
@@ -149,6 +155,22 @@ namespace JT1078.FMp4.MessagePack
             MfraSizePosition = 0;
         }
 
+        public void CreateMoofOffsetPosition()
+        {
+            MoofOffsetPosition = writer.WrittenCount;
+        }
+
+        public int GetMoofOffsetPosition()
+        {
+            return MoofOffsetPosition;
+        }
+
+        public void ClearMoofOffsetPosition()
+        {
+            MoofOffsetPosition = 0;
+        }
+
+
         /// <summary>
         /// ref
         /// </summary>
diff --git a/src/JT1078.Protocol.Test/JT1078SerializerTest.cs b/src/JT1078.Protocol.Test/JT1078SerializerTest.cs
index 82e8e82..eda06ee 100644
--- a/src/JT1078.Protocol.Test/JT1078SerializerTest.cs
+++ b/src/JT1078.Protocol.Test/JT1078SerializerTest.cs
@@ -336,13 +336,13 @@ namespace JT1078.Protocol.Test
         [Fact]
         public void MergeTest()
         {
-            var lines = File.ReadAllLines(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "JT1078.txt"));
+            var lines = File.ReadAllLines(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "h264","JT1078_1.txt"));
             JT1078Package merge=null;
             int mergeBodyLength=0;
             foreach (var line in lines)
             {
                 var data = line.Split(',');
-                var bytes = data[5].ToHexBytes();
+                var bytes = data[6].ToHexBytes();
                 JT1078Package package = JT1078Serializer.Deserialize(bytes);
                 mergeBodyLength += package.DataBodyLength;
                 merge = JT1078Serializer.Merge(package);
diff --git a/src/JT1078.Protocol/H264/H264Decoder.cs b/src/JT1078.Protocol/H264/H264Decoder.cs
index 32ce968..2b192e9 100644
--- a/src/JT1078.Protocol/H264/H264Decoder.cs
+++ b/src/JT1078.Protocol/H264/H264Decoder.cs
@@ -18,7 +18,7 @@ namespace JT1078.Protocol.H264
         public List<H264NALU> ParseNALU(JT1078Package package, string key = null)
         {
             List<H264NALU> h264NALUs = new List<H264NALU>();
-            int i=0,state=0;
+            int i=0,state=0,laststate=0;
             int? lastIndex=null;
             int length = package.Bodies.Length;
             byte value;
@@ -45,9 +45,10 @@ namespace JT1078.Protocol.H264
                             if (lastIndex.HasValue)
                             {
                                 var tmp = buffer.Slice(lastIndex.Value, i - state - 1 - lastIndex.Value);
-                                h264NALUs.Add(Create(package, tmp, state));
+                                h264NALUs.Add(Create(package, tmp, state+1));
                             }
                             lastIndex = i;
+                            laststate = state+1;
                             state = 0;
                         }
                         else
@@ -61,11 +62,69 @@ namespace JT1078.Protocol.H264
             }
             if (lastIndex.HasValue)
             {
-                h264NALUs.Add(Create(package, buffer.Slice(lastIndex.Value), 4));
+                h264NALUs.Add(Create(package, buffer.Slice(lastIndex.Value), laststate));
             }
             return h264NALUs;
         }
 
+        /// <summary>
+        /// 
+        /// <see cref="https://github.com/samirkumardas/jmuxer/blob/master/src/parsers/h264.js"/>
+        /// </summary>
+        /// <param name="package"></param>
+        /// <param name="h264NALUs"></param>
+        /// <param name="key"></param>
+        /// <returns></returns>
+        public void ParseNALU(JT1078Package package, List<H264NALU> h264NALUs,string key = null)
+        {
+            int i = 0, state = 0, laststate = 0;
+            int? lastIndex = null;
+            int length = package.Bodies.Length;
+            byte value;
+            ReadOnlySpan<byte> buffer = package.Bodies;
+            while (i < length)
+            {
+                value = buffer[i++];
+                switch (state)
+                {
+                    case 0:
+                        if (value == 0) state = 1;
+                        break;
+                    case 1:
+                        state = value == 0 ? 2 : 0;
+                        break;
+                    case 2:
+                    case 3:
+                        if (value == 0)
+                        {
+                            state = 3;
+                        }
+                        else if (value == 1 && i < length)
+                        {
+                            if (lastIndex.HasValue)
+                            {
+                                var tmp = buffer.Slice(lastIndex.Value, i - state - 1 - lastIndex.Value);
+                                h264NALUs.Add(Create(package, tmp, lastIndex.Value));
+                            }
+                            lastIndex = i;
+                            laststate = state + 1;
+                            state = 0;
+                        }
+                        else
+                        {
+                            state = 0;
+                        }
+                        break;
+                    default:
+                        break;
+                }
+            }
+            if (lastIndex.HasValue)
+            {
+                h264NALUs.Add(Create(package, buffer.Slice(lastIndex.Value), laststate));              
+            }
+        }
+
         private H264NALU Create(JT1078Package package,ReadOnlySpan<byte> nalu, int startCodePrefix)
         {
             H264NALU nALU = new H264NALU();
@@ -75,6 +134,7 @@ namespace JT1078.Protocol.H264
             nALU.LastFrameInterval = package.LastFrameInterval;
             nALU.LastIFrameInterval = package.LastIFrameInterval;
             nALU.Timestamp = package.Timestamp;
+            nALU.Slice = (nalu[1] & 0x80)== 0x80;
             nALU.RawData = nalu.ToArray();
             if (startCodePrefix == 3)
             {
diff --git a/src/JT1078.Protocol/H264/H264NALU.cs b/src/JT1078.Protocol/H264/H264NALU.cs
index f85ee7f..4594aaf 100644
--- a/src/JT1078.Protocol/H264/H264NALU.cs
+++ b/src/JT1078.Protocol/H264/H264NALU.cs
@@ -40,6 +40,11 @@ namespace JT1078.Protocol.H264
         /// 当数据类型为01000时，则没有该字段
         /// </summary>
         public ulong Timestamp { get; set; }
+
+        /// <summary>
+        /// 是否切片 0x80
+        /// </summary>
+        public bool Slice { get; set; }
         /// <summary>
         /// 数据体
         /// </summary>
diff --git a/src/JT1078.Protocol/JT1078.Protocol.xml b/src/JT1078.Protocol/JT1078.Protocol.xml
index b73d231..f7137b0 100644
--- a/src/JT1078.Protocol/JT1078.Protocol.xml
+++ b/src/JT1078.Protocol/JT1078.Protocol.xml
@@ -122,6 +122,16 @@
             <param name="key"></param>
             <returns></returns>
         </member>
+        <member name="M:JT1078.Protocol.H264.H264Decoder.ParseNALU(JT1078.Protocol.JT1078Package,System.Collections.Generic.List{JT1078.Protocol.H264.H264NALU},System.String)">
+            <summary>
+            
+            <see cref="!:https://github.com/samirkumardas/jmuxer/blob/master/src/parsers/h264.js"/>
+            </summary>
+            <param name="package"></param>
+            <param name="h264NALUs"></param>
+            <param name="key"></param>
+            <returns></returns>
+        </member>
         <member name="M:JT1078.Protocol.H264.H264Decoder.DiscardEmulationPreventionBytes(System.ReadOnlySpan{System.Byte})">
             <summary>
             Expunge any "Emulation Prevention" bytes from a "Raw Byte Sequence Payload"
@@ -166,6 +176,11 @@
             当数据类型为01000时，则没有该字段
             </summary>
         </member>
+        <member name="P:JT1078.Protocol.H264.H264NALU.Slice">
+            <summary>
+            是否切片 0x80
+            </summary>
+        </member>
         <member name="P:JT1078.Protocol.H264.H264NALU.RawData">
             <summary>
             数据体