diff --git a/3rdpart/media-server b/3rdpart/media-server
index 82a48c57..5d8f1536 160000
--- a/3rdpart/media-server
+++ b/3rdpart/media-server
@@ -1 +1 @@
-Subproject commit 82a48c57ae5269aaa70a8c3df8a67dc06b05d0cd
+Subproject commit 5d8f1536bd4c70be8f2d7ff30fde3c36877477c8
diff --git a/src/Record/MP4.cpp b/src/Record/MP4.cpp
index 0dd1756a..a6a141ed 100644
--- a/src/Record/MP4.cpp
+++ b/src/Record/MP4.cpp
@@ -13,34 +13,119 @@
 #include "Util/File.h"
 #include "Util/logger.h"
 #include "Common/config.h"
+#include "fmp4-writer.h"
+
 using namespace toolkit;
 namespace mediakit {
 
+struct mp4_writer_t {
+    int is_fmp4;
+    union {
+        fmp4_writer_t *fmp4;
+        mov_writer_t *mov;
+    } u;
+};
+
+mp4_writer_t* mp4_writer_create(int is_fmp4, const struct mov_buffer_t *buffer, void* param, int flags){
+    mp4_writer_t *mp4 = (mp4_writer_t *) malloc(sizeof(mp4_writer_t));
+    mp4->is_fmp4 = is_fmp4;
+    if (is_fmp4) {
+        mp4->u.fmp4 = fmp4_writer_create(buffer, param, flags);
+    } else {
+        mp4->u.mov = mov_writer_create(buffer, param, flags);
+    }
+    return mp4;
+}
+
+void mp4_writer_destroy(mp4_writer_t* mp4){
+    if (mp4->is_fmp4) {
+        fmp4_writer_destroy(mp4->u.fmp4);
+    } else {
+        mov_writer_destroy(mp4->u.mov);
+    }
+    free(mp4);
+}
+
+int mp4_writer_add_audio(mp4_writer_t* mp4, uint8_t object, int channel_count, int bits_per_sample, int sample_rate, const void* extra_data, size_t extra_data_size){
+    if (mp4->is_fmp4) {
+        return fmp4_writer_add_audio(mp4->u.fmp4, object, channel_count, bits_per_sample, sample_rate, extra_data, extra_data_size);
+    } else {
+        return mov_writer_add_audio(mp4->u.mov, object, channel_count, bits_per_sample, sample_rate, extra_data, extra_data_size);
+    }
+}
+
+int mp4_writer_add_video(mp4_writer_t* mp4, uint8_t object, int width, int height, const void* extra_data, size_t extra_data_size){
+    if (mp4->is_fmp4) {
+        return fmp4_writer_add_video(mp4->u.fmp4, object, width, height, extra_data, extra_data_size);
+    } else {
+        return mov_writer_add_video(mp4->u.mov, object, width, height, extra_data, extra_data_size);
+    }
+}
+
+int mp4_writer_add_subtitle(mp4_writer_t* mp4, uint8_t object, const void* extra_data, size_t extra_data_size){
+    if (mp4->is_fmp4) {
+        return fmp4_writer_add_subtitle(mp4->u.fmp4, object, extra_data, extra_data_size);
+    } else {
+        return mov_writer_add_subtitle(mp4->u.mov, object, extra_data, extra_data_size);
+    }
+}
+
+int mp4_writer_write(mp4_writer_t* mp4, int track, const void* data, size_t bytes, int64_t pts, int64_t dts, int flags){
+    if (mp4->is_fmp4) {
+        return fmp4_writer_write(mp4->u.fmp4, track, data, bytes, pts, dts, flags);
+    } else {
+        return mov_writer_write(mp4->u.mov, track, data, bytes, pts, dts, flags);
+    }
+}
+
+int mp4_writer_write_l(mp4_writer_t* mp4, int track, const void* data, size_t bytes, int64_t pts, int64_t dts, int flags, int add_nalu_size){
+    if (mp4->is_fmp4) {
+        return fmp4_writer_write_l(mp4->u.fmp4, track, data, bytes, pts, dts, flags, add_nalu_size);
+    } else {
+        return mov_writer_write_l(mp4->u.mov, track, data, bytes, pts, dts, flags, add_nalu_size);
+    }
+}
+
+int mp4_writer_save_segment(mp4_writer_t* mp4){
+    if (mp4->is_fmp4) {
+        return fmp4_writer_save_segment(mp4->u.fmp4);
+    } else {
+        return -1;
+    }
+}
+
+int mp4_writer_init_segment(mp4_writer_t* mp4){
+    if (mp4->is_fmp4) {
+        return fmp4_writer_init_segment(mp4->u.fmp4);
+    } else {
+        return -1;
+    }
+}
+
 static struct mov_buffer_t s_io = {
-        [](void* ctx, void* data, uint64_t bytes) {
-            MP4File *thiz = (MP4File *)ctx;
-            return thiz->onRead(data,bytes);
+        [](void *ctx, void *data, uint64_t bytes) {
+            MP4File *thiz = (MP4File *) ctx;
+            return thiz->onRead(data, bytes);
         },
-        [](void* ctx, const void* data, uint64_t bytes){
-            MP4File *thiz = (MP4File *)ctx;
-            return thiz->onWrite(data,bytes);
+        [](void *ctx, const void *data, uint64_t bytes) {
+            MP4File *thiz = (MP4File *) ctx;
+            return thiz->onWrite(data, bytes);
         },
-        [](void* ctx, uint64_t offset) {
-            MP4File *thiz = (MP4File *)ctx;
+        [](void *ctx, uint64_t offset) {
+            MP4File *thiz = (MP4File *) ctx;
             return thiz->onSeek(offset);
         },
-        [](void* ctx){
-            MP4File *thiz = (MP4File *)ctx;
+        [](void *ctx) {
+            MP4File *thiz = (MP4File *) ctx;
             return thiz->onTell();
         }
 };
 
-MP4File::Writer MP4File::createWriter(){
-    GET_CONFIG(bool, mp4FastStart, Record::kFastStart);
+MP4File::Writer MP4File::createWriter(int flags, bool is_fmp4){
     Writer writer;
-    writer.reset(mov_writer_create(&s_io,this,mp4FastStart ? MOV_FLAG_FASTSTART : 0),[](mov_writer_t *ptr){
+    writer.reset(mp4_writer_create(is_fmp4, &s_io,this, flags),[](mp4_writer_t *ptr){
         if(ptr){
-            mov_writer_destroy(ptr);
+            mp4_writer_destroy(ptr);
         }
     });
     if(!writer){
diff --git a/src/Record/MP4.h b/src/Record/MP4.h
index b76362a9..e9d49b83 100644
--- a/src/Record/MP4.h
+++ b/src/Record/MP4.h
@@ -23,15 +23,26 @@
 using namespace std;
 namespace mediakit {
 
+typedef struct mp4_writer_t mp4_writer_t;
+mp4_writer_t* mp4_writer_create(int is_fmp4, const struct mov_buffer_t *buffer, void* param, int flags);
+void mp4_writer_destroy(mp4_writer_t* mp4);
+int mp4_writer_add_audio(mp4_writer_t* mp4, uint8_t object, int channel_count, int bits_per_sample, int sample_rate, const void* extra_data, size_t extra_data_size);
+int mp4_writer_add_video(mp4_writer_t* mp4, uint8_t object, int width, int height, const void* extra_data, size_t extra_data_size);
+int mp4_writer_add_subtitle(mp4_writer_t* mp4, uint8_t object, const void* extra_data, size_t extra_data_size);
+int mp4_writer_write(mp4_writer_t* mp4, int track, const void* data, size_t bytes, int64_t pts, int64_t dts, int flags);
+int mp4_writer_write_l(mp4_writer_t* mp4, int track, const void* data, size_t bytes, int64_t pts, int64_t dts, int flags, int add_nalu_size);
+int mp4_writer_save_segment(mp4_writer_t* mp4);
+int mp4_writer_init_segment(mp4_writer_t* mp4);
+
 class MP4File {
 public:
     friend struct mov_buffer_t;
-    typedef std::shared_ptr<mov_writer_t> Writer;
+    typedef std::shared_ptr<mp4_writer_t> Writer;
     typedef std::shared_ptr<mov_reader_t> Reader;
     MP4File() = default;
     virtual ~MP4File() = default;
 
-    Writer createWriter();
+    Writer createWriter(int flags, bool is_fmp4 = false);
     Reader createReader();
     void openFile(const char *file,const char *mode);
     void closeFile();
diff --git a/src/Record/MP4Muxer.cpp b/src/Record/MP4Muxer.cpp
index 72fbbc9d..e8f5f153 100644
--- a/src/Record/MP4Muxer.cpp
+++ b/src/Record/MP4Muxer.cpp
@@ -26,7 +26,8 @@ MP4Muxer::~MP4Muxer() {
 void MP4Muxer::openMP4(){
     closeMP4();
     openFile(_file_name.data(), "wb+");
-    _mov_writter = createWriter();
+    GET_CONFIG(bool, mp4FastStart, Record::kFastStart);
+    _mov_writter = createWriter(mp4FastStart ? MOV_FLAG_FASTSTART : 0, false);
 }
 void MP4Muxer::closeMP4(){
     _mov_writter = nullptr;
@@ -84,24 +85,23 @@ void MP4Muxer::inputFrame(const Frame::Ptr &frame) {
                         merged.append((char *) &nalu_size, 4);
                         merged.append(frame->data() + frame->prefixSize(), frame->size() - frame->prefixSize());
                     });
-                    mov_writer_write_l(_mov_writter.get(),
+                    mp4_writer_write(_mov_writter.get(),
                                        track_info.track_id,
                                        merged.data(),
                                        merged.size(),
                                        pts_out,
                                        dts_out,
-                                       back->keyFrame() ? MOV_AV_FLAG_KEYFREAME : 0,
-                                       1/*我们合并时已经生成了4个字节的MP4格式start code*/);
+                                       back->keyFrame() ? MOV_AV_FLAG_KEYFREAME : 0);
                 } else {
                     //缓存中只有一帧视频
-                    mov_writer_write_l(_mov_writter.get(),
+                    mp4_writer_write_l(_mov_writter.get(),
                                        track_info.track_id,
                                        back->data() + back->prefixSize(),
                                        back->size() - back->prefixSize(),
                                        pts_out,
                                        dts_out,
                                        back->keyFrame() ? MOV_AV_FLAG_KEYFREAME : 0,
-                                       0/*需要生成头4个字节的MP4格式start code*/);
+                                       1/*需要生成头4个字节的MP4格式start code*/);
                 }
                 _frameCached.clear();
             }
@@ -111,14 +111,13 @@ void MP4Muxer::inputFrame(const Frame::Ptr &frame) {
             break;
         default: {
             track_info.stamp.revise(frame->dts(), frame->pts(), dts_out, pts_out);
-            mov_writer_write_l(_mov_writter.get(),
-                               track_info.track_id,
-                               frame->data() + frame->prefixSize(),
-                               frame->size() - frame->prefixSize(),
-                               pts_out,
-                               dts_out,
-                               frame->keyFrame() ? MOV_AV_FLAG_KEYFREAME : 0,
-                               1/*aac或其他类型frame不用添加4个nalu_size的字节*/);
+            mp4_writer_write(_mov_writter.get(),
+                             track_info.track_id,
+                             frame->data() + frame->prefixSize(),
+                             frame->size() - frame->prefixSize(),
+                             pts_out,
+                             dts_out,
+                             frame->keyFrame() ? MOV_AV_FLAG_KEYFREAME : 0);
         }
             break;
     }
@@ -178,7 +177,7 @@ void MP4Muxer::addTrack(const Track::Ptr &track) {
                 return;
             }
 
-            auto track_id = mov_writer_add_audio(_mov_writter.get(),
+            auto track_id = mp4_writer_add_audio(_mov_writter.get(),
                                                  mp4_object,
                                                  audio_track->getAudioChannel(),
                                                  audio_track->getAudioSampleBit() * audio_track->getAudioChannel(),
@@ -199,7 +198,7 @@ void MP4Muxer::addTrack(const Track::Ptr &track) {
                 return;
             }
 
-            auto track_id = mov_writer_add_audio(_mov_writter.get(),
+            auto track_id = mp4_writer_add_audio(_mov_writter.get(),
                                                  mp4_object,
                                                  audio_track->getAudioChannel(),
                                                  audio_track->getAudioSampleBit() * audio_track->getAudioChannel(),
@@ -232,7 +231,7 @@ void MP4Muxer::addTrack(const Track::Ptr &track) {
                 return;
             }
 
-            auto track_id = mov_writer_add_video(_mov_writter.get(),
+            auto track_id = mp4_writer_add_video(_mov_writter.get(),
                                                  mp4_object,
                                                  h264_track->getVideoWidth(),
                                                  h264_track->getVideoHeight(),
@@ -267,7 +266,7 @@ void MP4Muxer::addTrack(const Track::Ptr &track) {
                 return;
             }
 
-            auto track_id = mov_writer_add_video(_mov_writter.get(),
+            auto track_id = mp4_writer_add_video(_mov_writter.get(),
                                                  mp4_object,
                                                  h265_track->getVideoWidth(),
                                                  h265_track->getVideoHeight(),