新增支持HTTP-fMP4 WebSocket-fMP4直播

2024-10-06 12:13:49 +08:00 · 2020-09-20 19:45:37 +08:00 · 2020-09-20 19:45:37 +08:00 · d971eccf92
commit d971eccf92
parent 4ce1a25f09
13 changed files with 576 additions and 37 deletions
--- a/README.md
+++ b/README.md
@ -13,7 +13,7 @@
 ## 项目特点

 - 基于C++11开发，避免使用裸指针，代码稳定可靠，性能优越。
- 支持多种协议(RTSP/RTMP/HLS/HTTP-FLV/Websocket-FLV/GB28181/HTTP-TS/Websocket-TS/MP4),支持协议互转。
+- 支持多种协议(RTSP/RTMP/HLS/HTTP-FLV/Websocket-FLV/GB28181/HTTP-TS/Websocket-TS/HTTP-fMP4/Websocket-fMP4/MP4),支持协议互转。
 - 使用多路复用/多线程/异步网络IO模式开发，并发性能优越，支持海量客户端连接。
 - 代码经过长期大量的稳定性、性能测试，已经在线上商用验证已久。
 - 支持linux、macos、ios、android、windows全平台。
@ -63,6 +63,10 @@
 - TS
  - 支持http[s]-ts直播
  - 支持ws[s]-ts直播
+  
+- fMP4
+  - 支持http[s]-fmp4直播
+  - 支持ws[s]-fmp4直播

 - HTTP[S]与WebSocket
  - 服务器支持`目录索引生成`,`文件下载`,`表单提交请求`
--- a/README_en.md
+++ b/README_en.md
@ -11,7 +11,7 @@

 ## Why ZLMediaKit?
 - Developed based on C++ 11, the code is stable and reliable, avoiding the use of raw pointers, cross-platform porting is simple and convenient, and the code is clear and concise.
- Support rich streaming media protocols(`RTSP/RTMP/HLS/HTTP-FLV/WebSocket-flv/HTTP-TS/WebSocket-TS`),and support Inter-protocol conversion.
+- Support rich streaming media protocols(`RTSP/RTMP/HLS/HTTP-FLV/WebSocket-flv/HTTP-TS/WebSocket-TS/HTTP-fMP4/Websocket-fMP4/MP4`),and support Inter-protocol conversion.
 - Multiplexing asynchronous network IO based on epoll and multi thread，extreme performance.
 - Well performance and stable test,can be used commercially.
 - Support linux, macos, ios, android, Windows Platforms.
@ -44,6 +44,9 @@
  
 - TS
  - Support HTTP-TS/WebSocket-TS sever.
+  
+- fMP4
+  - Support HTTP-fMP4/WebSocket-fMP4 sever.

 - HTTP[S]
  - HTTP server,suppor directory meun、RESTful http api.
--- a/src/Common/MultiMediaSourceMuxer.cpp
+++ b/src/Common/MultiMediaSourceMuxer.cpp
@ -34,6 +34,7 @@ MultiMuxerPrivate::MultiMuxerPrivate(const string &vhost, const string &app, con
    }

    _ts = std::make_shared<TSMediaSourceMuxer>(vhost, app, stream);
+    _fmp4 = std::make_shared<FMP4MediaSourceMuxer>(vhost, app, stream);
 }

 void MultiMuxerPrivate::resetTracks() {
@ -46,6 +47,9 @@ void MultiMuxerPrivate::resetTracks() {
    if (_ts) {
        _ts->resetTracks();
    }
+    if (_fmp4) {
+        _fmp4->resetTracks();
+    }

    //拷贝智能指针，目的是为了防止跨线程调用设置录像相关api导致的线程竞争问题
    auto hls = _hls;
@ -70,6 +74,9 @@ void MultiMuxerPrivate::setMediaListener(const std::weak_ptr<MediaSourceEvent> &
    if (_ts) {
        _ts->setListener(listener);
    }
+    if (_fmp4) {
+        _fmp4->setListener(listener);
+    }
    auto hls = _hls;
    if (hls) {
        hls->setListener(listener);
@ -81,7 +88,8 @@ int MultiMuxerPrivate::totalReaderCount() const {
    return (_rtsp ? _rtsp->readerCount() : 0) +
           (_rtmp ? _rtmp->readerCount() : 0) +
           (_ts ? _ts->readerCount() : 0) +
-           (hls ? hls->readerCount() : 0) ;
+           (_fmp4 ? _fmp4->readerCount() : 0) +
+           (hls ? hls->readerCount() : 0);
 }

 static std::shared_ptr<MediaSinkInterface> makeRecorder(const vector<Track::Ptr> &tracks, Recorder::type type, const string &custom_path, MediaSource &sender){
@ -159,6 +167,9 @@ void MultiMuxerPrivate::onTrackReady(const Track::Ptr &track) {
    if (_ts) {
        _ts->addTrack(track);
    }
+    if (_fmp4) {
+        _fmp4->addTrack(track);
+    }

    //拷贝智能指针，目的是为了防止跨线程调用设置录像相关api导致的线程竞争问题
    auto hls = _hls;
@ -176,6 +187,7 @@ bool MultiMuxerPrivate::isEnabled(){
    return (_rtmp ? _rtmp->isEnabled() : false) ||
           (_rtsp ? _rtsp->isEnabled() : false) ||
           (_ts ? _ts->isEnabled() : false) ||
+           (_fmp4 ? _fmp4->isEnabled() : false) ||
           (hls ? hls->isEnabled() : false) || _mp4;
 }

@ -189,6 +201,9 @@ void MultiMuxerPrivate::onTrackFrame(const Frame::Ptr &frame) {
    if (_ts) {
        _ts->inputFrame(frame);
    }
+    if (_fmp4) {
+        _fmp4->inputFrame(frame);
+    }

    //拷贝智能指针，目的是为了防止跨线程调用设置录像相关api导致的线程竞争问题
    //此处使用智能指针拷贝来确保线程安全，比互斥锁性能更优
@ -239,6 +254,9 @@ void MultiMuxerPrivate::onAllTrackReady() {
    if (_rtsp) {
        _rtsp->onAllTrackReady();
    }
+    if (_fmp4) {
+        _fmp4->onAllTrackReady();
+    }
    if (_track_listener) {
        _track_listener->onAllTrackReady();
    }
--- a/src/Common/MultiMediaSourceMuxer.h
+++ b/src/Common/MultiMediaSourceMuxer.h
@ -19,6 +19,7 @@
 #include "Rtsp/RtspMediaSourceMuxer.h"
 #include "Rtmp/RtmpMediaSourceMuxer.h"
 #include "TS/TSMediaSourceMuxer.h"
+#include "FMP4/FMP4MediaSourceMuxer.h"

 namespace mediakit{

@ -58,6 +59,7 @@ private:
    HlsRecorder::Ptr _hls;
    MediaSinkInterface::Ptr _mp4;
    TSMediaSourceMuxer::Ptr _ts;
+    FMP4MediaSourceMuxer::Ptr _fmp4;
    std::weak_ptr<MediaSourceEvent> _listener;
 };

--- a/src/Common/config.h
+++ b/src/Common/config.h
@ -48,6 +48,7 @@ bool loadIniConfig(const char *ini_path = nullptr);
 #define RTMP_SCHEMA "rtmp"
 #define HLS_SCHEMA "hls"
 #define TS_SCHEMA "ts"
+#define FMP4_SCHEMA "fmp4"
 #define DEFAULT_VHOST "__defaultVhost__"

 ////////////广播名称///////////
--- a/src/FMP4/FMP4MediaSource.h
+++ b/src/FMP4/FMP4MediaSource.h
@ -0,0 +1,148 @@
+/*
+ * Copyright (c) 2016 The ZLMediaKit project authors. All Rights Reserved.
+ *
+ * This file is part of ZLMediaKit(https://github.com/xiongziliang/ZLMediaKit).
+ *
+ * Use of this source code is governed by MIT license that can be found in the
+ * LICENSE file in the root of the source tree. All contributing project authors
+ * may be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef ZLMEDIAKIT_FMP4MEDIASOURCE_H
+#define ZLMEDIAKIT_FMP4MEDIASOURCE_H
+
+#include "Common/MediaSource.h"
+using namespace toolkit;
+#define FMP4_GOP_SIZE 512
+
+namespace mediakit {
+
+//FMP4直播数据包
+class FMP4Packet : public BufferString{
+public:
+    using Ptr = std::shared_ptr<FMP4Packet>;
+
+    template<typename ...ARGS>
+    FMP4Packet(ARGS && ...args) : BufferString(std::forward<ARGS>(args)...) {};
+    ~FMP4Packet() override = default;
+
+public:
+    uint32_t time_stamp = 0;
+};
+
+//FMP4直播合并写策略类
+class FMP4FlushPolicy : public FlushPolicy{
+public:
+    FMP4FlushPolicy() = default;
+    ~FMP4FlushPolicy() = default;
+
+    uint32_t getStamp(const FMP4Packet::Ptr &packet) {
+        return packet->time_stamp;
+    }
+};
+
+//FMP4直播源
+class FMP4MediaSource : public MediaSource, public RingDelegate<FMP4Packet::Ptr>, public PacketCache<FMP4Packet, FMP4FlushPolicy>{
+public:
+    using Ptr = std::shared_ptr<FMP4MediaSource>;
+    using RingDataType = std::shared_ptr<List<FMP4Packet::Ptr> >;
+    using RingType = RingBuffer<RingDataType>;
+
+    FMP4MediaSource(const string &vhost,
+                    const string &app,
+                    const string &stream_id,
+                    int ring_size = FMP4_GOP_SIZE) : MediaSource(FMP4_SCHEMA, vhost, app, stream_id), _ring_size(ring_size) {}
+
+    ~FMP4MediaSource() override = default;
+
+    /**
+     * 获取媒体源的环形缓冲
+     */
+    const RingType::Ptr &getRing() const {
+        return _ring;
+    }
+
+    /**
+     * 获取fmp4 init segment
+     */
+    const string &getInitSegment() const{
+        return _init_segment;
+    }
+
+    /**
+     * 设置fmp4 init segment
+     * @param str init segment
+     */
+    void setInitSegment(string str) {
+        _init_segment = std::move(str);
+        if (_ring) {
+            regist();
+        }
+    }
+
+    /**
+     * 获取播放器个数
+     */
+    int readerCount() override {
+        return _ring ? _ring->readerCount() : 0;
+    }
+
+    /**
+     * 输入FMP4包
+     * @param packet FMP4包
+     * @param key 是否为关键帧第一个包
+     */
+    void onWrite(const FMP4Packet::Ptr &packet, bool key) override {
+        if (!_ring) {
+            createRing();
+        }
+        if (key) {
+            _have_video = true;
+        }
+        PacketCache<FMP4Packet, FMP4FlushPolicy>::inputPacket(true, packet, key);
+    }
+
+    /**
+     * 情况GOP缓存
+     */
+    void clearCache() override {
+        PacketCache<FMP4Packet, FMP4FlushPolicy>::clearCache();
+        _ring->clearCache();
+    }
+
+private:
+    void createRing(){
+        weak_ptr<FMP4MediaSource> weak_self = dynamic_pointer_cast<FMP4MediaSource>(shared_from_this());
+        _ring = std::make_shared<RingType>(_ring_size, [weak_self](int size) {
+            auto strong_self = weak_self.lock();
+            if (!strong_self) {
+                return;
+            }
+            strong_self->onReaderChanged(size);
+        });
+        onReaderChanged(0);
+        if (!_init_segment.empty()) {
+            regist();
+        }
+    }
+
+    /**
+     * 合并写回调
+     * @param packet_list 合并写缓存列队
+     * @param key_pos 是否包含关键帧
+     */
+    void onFlush(std::shared_ptr<List<FMP4Packet::Ptr> > &packet_list, bool key_pos) override {
+        //如果不存在视频，那么就没有存在GOP缓存的意义，所以确保一直清空GOP缓存
+        _ring->write(packet_list, _have_video ? key_pos : true);
+    }
+
+private:
+    bool _have_video = false;
+    int _ring_size;
+    string _init_segment;
+    RingType::Ptr _ring;
+};
+
+
+}//namespace mediakit
+#endif //ZLMEDIAKIT_FMP4MEDIASOURCE_H
--- a/src/FMP4/FMP4MediaSourceMuxer.h
+++ b/src/FMP4/FMP4MediaSourceMuxer.h
@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 2016 The ZLMediaKit project authors. All Rights Reserved.
+ *
+ * This file is part of ZLMediaKit(https://github.com/xiongziliang/ZLMediaKit).
+ *
+ * Use of this source code is governed by MIT license that can be found in the
+ * LICENSE file in the root of the source tree. All contributing project authors
+ * may be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef ZLMEDIAKIT_FMP4MEDIASOURCEMUXER_H
+#define ZLMEDIAKIT_FMP4MEDIASOURCEMUXER_H
+
+#include "FMP4MediaSource.h"
+#include "Record/MP4Muxer.h"
+
+namespace mediakit {
+
+class FMP4MediaSourceMuxer : public MP4MuxerMemory, public MediaSourceEventInterceptor,
+                             public std::enable_shared_from_this<FMP4MediaSourceMuxer> {
+public:
+    using Ptr = std::shared_ptr<FMP4MediaSourceMuxer>;
+
+    FMP4MediaSourceMuxer(const string &vhost,
+                         const string &app,
+                         const string &stream_id) {
+        _media_src = std::make_shared<FMP4MediaSource>(vhost, app, stream_id);
+    }
+
+    ~FMP4MediaSourceMuxer() override = default;
+
+    void setListener(const std::weak_ptr<MediaSourceEvent> &listener){
+        _listener = listener;
+        _media_src->setListener(shared_from_this());
+    }
+
+    int readerCount() const{
+        return _media_src->readerCount();
+    }
+
+    void onReaderChanged(MediaSource &sender, int size) override {
+        _enabled = size;
+        if (!size) {
+            _clear_cache = true;
+        }
+        MediaSourceEventInterceptor::onReaderChanged(sender, size);
+    }
+
+    void inputFrame(const Frame::Ptr &frame) override {
+        if (_clear_cache) {
+            _clear_cache = false;
+            _media_src->clearCache();
+        }
+        if (_enabled) {
+            MP4MuxerMemory::inputFrame(frame);
+        }
+    }
+
+    bool isEnabled() {
+        //缓存尚未清空时，还允许触发inputFrame函数，以便及时清空缓存
+        return _clear_cache ? true : _enabled;
+    }
+
+    void onAllTrackReady() {
+        _media_src->setInitSegment(getInitSegment());
+    }
+
+protected:
+    void onSegmentData(const string &string, uint32_t stamp, bool key_frame) override {
+        if (string.empty()) {
+            return;
+        }
+        FMP4Packet::Ptr packet = std::make_shared<FMP4Packet>(std::move(string));
+        packet->time_stamp = stamp;
+        _media_src->onWrite(packet, key_frame);
+    }
+
+private:
+    bool _enabled = true;
+    bool _clear_cache = false;
+    FMP4MediaSource::Ptr _media_src;
+};
+
+}//namespace mediakit
+#endif //ZLMEDIAKIT_FMP4MEDIASOURCEMUXER_H
--- a/src/Http/HttpSession.cpp
+++ b/src/Http/HttpSession.cpp
@ -93,7 +93,7 @@ void HttpSession::onError(const SockException& err) {
    if(_is_live_stream){
        uint64_t duration = _ticker.createdTime()/1000;
        //flv/ts播放器
-        WarnP(this) << "FLV/TS播放器("
+        WarnP(this) << "FLV/TS/FMP4播放器("
                    << _mediaInfo._vhost << "/"
                    << _mediaInfo._app << "/"
                    << _mediaInfo._streamid
@ -156,6 +156,12 @@ bool HttpSession::checkWebSocket(){
        return true;
    }

+    //判断是否为websocket-fmp4
+    if (checkLiveStreamFMP4(res_cb)) {
+        //这里是websocket-fmp4直播请求
+        return true;
+    }
+
    //这是普通的websocket连接
    if (!onWebSocketConnect(_parser)) {
        sendResponse("501 Not Implemented", true, nullptr, headerOut);
@ -234,15 +240,55 @@ bool HttpSession::checkLiveStream(const string &schema, const string  &url_suffi
    return true;
 }

+//http-fmp4 链接格式:http://vhost-url:port/app/streamid.live.mp4?key1=value1&key2=value2
+bool HttpSession::checkLiveStreamFMP4(const function<void()> &cb){
+    return checkLiveStream(FMP4_SCHEMA, ".live.mp4", [this, cb](const MediaSource::Ptr &src) {
+        auto fmp4_src = dynamic_pointer_cast<FMP4MediaSource>(src);
+        assert(fmp4_src);
+        if (!cb) {
+            //找到源，发送http头，负载后续发送
+            sendResponse("200 OK", false, HttpFileManager::getContentType(".mp4").data(), KeyValue(), nullptr, true);
+        } else {
+            //自定义发送http头
+            cb();
+        }
+
+        //直播牺牲延时提升发送性能
+        setSocketFlags();
+        onWrite(std::make_shared<BufferString>(fmp4_src->getInitSegment()), true);
+        weak_ptr<HttpSession> weak_self = dynamic_pointer_cast<HttpSession>(shared_from_this());
+        _fmp4_reader = fmp4_src->getRing()->attach(getPoller());
+        _fmp4_reader->setDetachCB([weak_self]() {
+            auto strong_self = weak_self.lock();
+            if (!strong_self) {
+                //本对象已经销毁
+                return;
+            }
+            strong_self->shutdown(SockException(Err_shutdown, "fmp4 ring buffer detached"));
+        });
+        _fmp4_reader->setReadCB([weak_self](const FMP4MediaSource::RingDataType &fmp4_list) {
+            auto strong_self = weak_self.lock();
+            if (!strong_self) {
+                //本对象已经销毁
+                return;
+            }
+            int i = 0;
+            int size = fmp4_list->size();
+            fmp4_list->for_each([&](const FMP4Packet::Ptr &ts) {
+                strong_self->onWrite(ts, ++i == size);
+            });
+        });
+    });
+}
+
 //http-ts 链接格式:http://vhost-url:port/app/streamid.live.ts?key1=value1&key2=value2
-//如果url(除去?以及后面的参数)后缀是.ts,那么表明该url是一个http-ts直播。
 bool HttpSession::checkLiveStreamTS(const function<void()> &cb){
    return checkLiveStream(TS_SCHEMA, ".live.ts", [this, cb](const MediaSource::Ptr &src) {
        auto ts_src = dynamic_pointer_cast<TSMediaSource>(src);
        assert(ts_src);
        if (!cb) {
            //找到源，发送http头，负载后续发送
-            sendResponse("200 OK", false, "video/mp2t", KeyValue(), nullptr, true);
+            sendResponse("200 OK", false, HttpFileManager::getContentType(".ts").data(), KeyValue(), nullptr, true);
        } else {
            //自定义发送http头
            cb();
@ -276,14 +322,13 @@ bool HttpSession::checkLiveStreamTS(const function<void()> &cb){
 }

 //http-flv 链接格式:http://vhost-url:port/app/streamid.flv?key1=value1&key2=value2
-//如果url(除去?以及后面的参数)后缀是.flv,那么表明该url是一个http-flv直播。
 bool HttpSession::checkLiveStreamFlv(const function<void()> &cb){
    return checkLiveStream(RTMP_SCHEMA, ".flv", [this, cb](const MediaSource::Ptr &src) {
        auto rtmp_src = dynamic_pointer_cast<RtmpMediaSource>(src);
        assert(rtmp_src);
        if (!cb) {
            //找到源，发送http头，负载后续发送
-            sendResponse("200 OK", false, "video/x-flv", KeyValue(), nullptr, true);
+            sendResponse("200 OK", false, HttpFileManager::getContentType(".flv").data(), KeyValue(), nullptr, true);
        } else {
            //自定义发送http头
            cb();
@ -325,6 +370,11 @@ void HttpSession::Handle_Req_GET_l(int64_t &content_len, bool sendBody) {
        return;
    }

+    if (checkLiveStreamFMP4()) {
+        //拦截http-fmp4播放器
+        return;
+    }
+
    bool bClose = !strcasecmp(_parser["Connection"].data(),"close");
    weak_ptr<HttpSession> weakSelf = dynamic_pointer_cast<HttpSession>(shared_from_this());
    HttpFileManager::onAccessPath(*this, _parser, [weakSelf, bClose](const string &status_code, const string &content_type,
--- a/src/Http/HttpSession.h
+++ b/src/Http/HttpSession.h
@ -20,6 +20,7 @@
 #include "HttpCookieManager.h"
 #include "HttpFileManager.h"
 #include "TS/TSMediaSource.h"
+#include "FMP4/FMP4MediaSource.h"

 using namespace std;
 using namespace toolkit;
@ -109,6 +110,7 @@ private:

    bool checkLiveStreamFlv(const function<void()> &cb = nullptr);
    bool checkLiveStreamTS(const function<void()> &cb = nullptr);
+    bool checkLiveStreamFMP4(const function<void()> &fmp4_list = nullptr);

    bool checkWebSocket();
    bool emitHttpEvent(bool doInvoke);
@ -131,6 +133,7 @@ private:
    Ticker _ticker;
    MediaInfo _mediaInfo;
    TSMediaSource::RingType::RingReader::Ptr _ts_reader;
+    FMP4MediaSource::RingType::RingReader::Ptr _fmp4_reader;
    //处理content数据的callback
    function<bool (const char *data,uint64_t len) > _contentCallBack;
 };
--- a/src/Record/MP4.cpp
+++ b/src/Record/MP4.cpp
@ -216,5 +216,51 @@ uint64_t MP4FileDisk::onTell() {
    return ftell64(_file.get());
 }

+/////////////////////////////////////////////////////MP4FileMemory/////////////////////////////////////////////////////////
+
+string MP4FileMemory::getAndClearMemory(){
+    string ret;
+    ret.swap(_memory);
+    _offset = 0;
+    return ret;
+}
+
+uint64_t MP4FileMemory::fileSize() const{
+    return _memory.size();
+}
+
+uint64_t MP4FileMemory::onTell(){
+    return _offset;
+}
+
+int MP4FileMemory::onSeek(uint64_t offset){
+    if (offset > _memory.size()) {
+        return -1;
+    }
+    _offset = offset;
+    return 0;
+}
+
+int MP4FileMemory::onRead(void *data, uint64_t bytes){
+    if (_offset >= _memory.size()) {
+        //EOF
+        return -1;
+    }
+    bytes = MIN(bytes, _memory.size() - _offset);
+    memcpy(data, _memory.data(), bytes);
+    _offset += bytes;
+    return 0;
+}
+
+int MP4FileMemory::onWrite(const void *data, uint64_t bytes){
+    if (_offset + bytes > _memory.size()) {
+        //需要扩容
+        _memory.resize(_offset + bytes);
+    }
+    memcpy((uint8_t *) _memory.data() + _offset, data, bytes);
+    _offset += bytes;
+    return 0;
+}
+
 }//namespace mediakit
 #endif //NABLE_MP4RECORD
--- a/src/Record/MP4.h
+++ b/src/Record/MP4.h
@ -117,6 +117,33 @@ private:
    std::shared_ptr<FILE> _file;
 };

+class MP4FileMemory : public MP4FileIO{
+public:
+    using Ptr = std::shared_ptr<MP4FileMemory>;
+    MP4FileMemory() = default;
+    ~MP4FileMemory() override = default;
+
+    /**
+     * 获取文件大小
+     */
+    uint64_t fileSize() const;
+
+    /**
+     * 获取并清空文件缓存
+     */
+    string getAndClearMemory();
+
+protected:
+    uint64_t onTell() override;
+    int onSeek(uint64_t offset) override;
+    int onRead(void *data, uint64_t bytes) override;
+    int onWrite(const void *data, uint64_t bytes) override;
+
+private:
+    uint64_t _offset = 0;
+    string _memory;
+};
+
 }//namespace mediakit
 #endif //NABLE_MP4RECORD
 #endif //ZLMEDIAKIT_MP4_H
--- a/src/Record/MP4Muxer.cpp
+++ b/src/Record/MP4Muxer.cpp
@ -21,26 +21,50 @@ MP4Muxer::~MP4Muxer() {
 }

 void MP4Muxer::openMP4(const string &file){
-    _file_name = file;
    closeMP4();
-    openFile(_file_name.data(), "wb+");
+    _file_name = file;
+    _mp4_file = std::make_shared<MP4FileDisk>();
+    _mp4_file->openFile(_file_name.data(), "wb+");
+}
+
+MP4FileIO::Writer MP4Muxer::createWriter(){
    GET_CONFIG(bool, mp4FastStart, Record::kFastStart);
-    _mov_writter = createWriter(mp4FastStart ? MOV_FLAG_FASTSTART : 0, false);
+    return _mp4_file->createWriter(mp4FastStart ? MOV_FLAG_FASTSTART : 0, false);
 }

 void MP4Muxer::closeMP4(){
-    _mov_writter = nullptr;
-    closeFile();
+    MP4MuxerInterface::resetTracks();
+    _mp4_file = nullptr;
 }

 void MP4Muxer::resetTracks() {
-    _codec_to_trackid.clear();
-    _started = false;
-    _have_video = false;
+    MP4MuxerInterface::resetTracks();
    openMP4(_file_name);
 }

-void MP4Muxer::inputFrame(const Frame::Ptr &frame) {
+/////////////////////////////////////////// MP4MuxerInterface /////////////////////////////////////////////
+
+void MP4MuxerInterface::saveSegment(){
+    mp4_writer_save_segment(_mov_writter.get());
+}
+
+void MP4MuxerInterface::initSegment(){
+    mp4_writer_init_segment(_mov_writter.get());
+}
+
+bool MP4MuxerInterface::haveVideo() const{
+    return _have_video;
+}
+
+void MP4MuxerInterface::resetTracks() {
+    _started = false;
+    _have_video = false;
+    _mov_writter = nullptr;
+    _frameCached.clear();
+    _codec_to_trackid.clear();
+}
+
+void MP4MuxerInterface::inputFrame(const Frame::Ptr &frame) {
    auto it = _codec_to_trackid.find(frame->getCodecId());
    if(it == _codec_to_trackid.end()){
        //该Track不存在或初始化失败
@ -134,7 +158,7 @@ static uint8_t getObject(CodecId codecId){
    }
 }

-void MP4Muxer::stampSync(){
+void MP4MuxerInterface::stampSync(){
    if(_codec_to_trackid.size() < 2){
        return;
    }
@ -154,7 +178,10 @@ void MP4Muxer::stampSync(){
    }
 }

-void MP4Muxer::addTrack(const Track::Ptr &track) {
+void MP4MuxerInterface::addTrack(const Track::Ptr &track) {
+    if (!_mov_writter) {
+        _mov_writter = createWriter();
+    }
    auto mp4_object = getObject(track->getCodecId());
    if (!mp4_object) {
        WarnL << "MP4录制不支持该编码格式:" << track->getCodecName();
@ -287,5 +314,54 @@ void MP4Muxer::addTrack(const Track::Ptr &track) {
    stampSync();
 }

+/////////////////////////////////////////// MP4MuxerMemory /////////////////////////////////////////////
+
+MP4MuxerMemory::MP4MuxerMemory() {
+    _memory_file = std::make_shared<MP4FileMemory>();
+}
+
+MP4FileIO::Writer MP4MuxerMemory::createWriter() {
+    return _memory_file->createWriter(MOV_FLAG_SEGMENT, true);
+}
+
+const string &MP4MuxerMemory::getInitSegment(){
+    if (_init_segment.empty()) {
+        initSegment();
+        saveSegment();
+        _init_segment = _memory_file->getAndClearMemory();
+    }
+    return _init_segment;
+}
+
+void MP4MuxerMemory::resetTracks(){
+    MP4MuxerInterface::resetTracks();
+    _memory_file = std::make_shared<MP4FileMemory>();
+    _init_segment.clear();
+}
+
+void MP4MuxerMemory::inputFrame(const Frame::Ptr &frame){
+    if (_init_segment.empty()) {
+        //尚未生成init segment
+        return;
+    }
+
+    bool key_frame = frame->keyFrame();
+    if (_ticker.elapsedTime() > 50 || key_frame) {
+        //遇到关键帧或者超过50ms则切片
+        _ticker.resetTime();
+        //flush切片
+        saveSegment();
+        //输出切片数据
+        onSegmentData(_memory_file->getAndClearMemory(), frame->dts(), _key_frame);
+        _key_frame = false;
+    }
+
+    if (key_frame) {
+        _key_frame = true;
+    }
+    MP4MuxerInterface::inputFrame(frame);
+}
+
+
 }//namespace mediakit
 #endif//#ifdef ENABLE_MP4
--- a/src/Record/MP4Muxer.h
+++ b/src/Record/MP4Muxer.h
@ -23,17 +23,16 @@

 namespace mediakit{

-class MP4Muxer : public MediaSinkInterface, public MP4FileDisk{
+class MP4MuxerInterface : public MediaSinkInterface {
 public:
-    typedef std::shared_ptr<MP4Muxer> Ptr;
-
-    MP4Muxer();
-    ~MP4Muxer() override;
+    MP4MuxerInterface() = default;
+    ~MP4MuxerInterface() override = default;

    /**
     * 添加已经ready状态的track
     */
-    void addTrack(const Track::Ptr & track) override;
+    void addTrack(const Track::Ptr &track) override;
+
    /**
     * 输入帧
     */
@ -42,7 +41,52 @@ public:
    /**
     * 重置所有track
     */
-    void resetTracks() override ;
+    void resetTracks() override;
+
+    /**
+     * 是否包含视频
+     */
+    bool haveVideo() const;
+
+    /**
+     * 保存fmp4分片
+     */
+    void saveSegment();
+
+    /**
+     * 创建新切片
+     */
+    void initSegment();
+
+protected:
+    virtual MP4FileIO::Writer createWriter() = 0;
+
+private:
+    void stampSync();
+
+private:
+    bool _started = false;
+    bool _have_video = false;
+    MP4FileIO::Writer _mov_writter;
+    struct track_info {
+        int track_id = -1;
+        Stamp stamp;
+    };
+    List<Frame::Ptr> _frameCached;
+    unordered_map<int, track_info> _codec_to_trackid;
+};
+
+class MP4Muxer : public MP4MuxerInterface{
+public:
+    typedef std::shared_ptr<MP4Muxer> Ptr;
+
+    MP4Muxer();
+    ~MP4Muxer() override;
+
+    /**
+     * 重置所有track
+     */
+    void resetTracks() override;

    /**
     * 打开mp4
@ -55,22 +99,54 @@ public:
     */
    void closeMP4();

-private:
-    void stampSync();
+protected:
+    MP4FileIO::Writer createWriter() override;

 private:
-    struct track_info {
-        int track_id = -1;
-        Stamp stamp;
-    };
-    unordered_map<int, track_info> _codec_to_trackid;
-    List<Frame::Ptr> _frameCached;
-    bool _started = false;
-    bool _have_video = false;
    string _file_name;
-    Writer _mov_writter;
+    MP4FileDisk::Ptr _mp4_file;
 };

+class MP4MuxerMemory : public MP4MuxerInterface{
+public:
+    MP4MuxerMemory();
+    ~MP4MuxerMemory() override = default;
+
+    /**
+     * 重置所有track
+     */
+    void resetTracks() override;
+
+    /**
+     * 输入帧
+     */
+    void inputFrame(const Frame::Ptr &frame) override;
+
+    /**
+     * 获取fmp4 init segment
+     */
+    const string &getInitSegment();
+
+protected:
+    /**
+     * 输出fmp4切片回调函数
+     * @param string 切片内容
+     * @param stamp 切片末尾时间戳
+     * @param key_frame 是否有关键帧
+     */
+    virtual void onSegmentData(const string &string, uint32_t stamp, bool key_frame) = 0;
+
+protected:
+    MP4FileIO::Writer createWriter() override;
+
+private:
+    bool _key_frame = false;
+    Ticker _ticker;
+    string _init_segment;
+    MP4FileMemory::Ptr _memory_file;
+};
+
+
 }//namespace mediakit
 #endif//#ifdef ENABLE_MP4
 #endif //ZLMEDIAKIT_MP4MUXER_H