diff --git a/src/Common/MediaSource.cpp b/src/Common/MediaSource.cpp
index 51bd7efb..afe42ff7 100644
--- a/src/Common/MediaSource.cpp
+++ b/src/Common/MediaSource.cpp
@@ -68,8 +68,11 @@ const string& MediaSource::getId() const {
     return _stream_id;
 }
 
-int MediaSource::getBytesSpeed(){
-    return _speed.getSpeed();
+int MediaSource::getBytesSpeed(TrackType type){
+    if(type == TrackInvalid){
+        return _speed[TrackVideo].getSpeed() + _speed[TrackAudio].getSpeed();
+    }
+    return _speed[type].getSpeed();
 }
 
 uint64_t MediaSource::getCreateStamp() const {
diff --git a/src/Common/MediaSource.h b/src/Common/MediaSource.h
index 5df31f50..965e1e57 100644
--- a/src/Common/MediaSource.h
+++ b/src/Common/MediaSource.h
@@ -220,7 +220,7 @@ public:
     virtual void setTimeStamp(uint32_t stamp) {};
 
     // 获取数据速率，单位bytes/s
-    int getBytesSpeed();
+    int getBytesSpeed(TrackType type = TrackInvalid);
     // 获取流创建GMT unix时间戳，单位秒
     uint64_t getCreateStamp() const;
     // 获取流上线时间，单位秒
@@ -286,7 +286,7 @@ private:
     void emitEvent(bool regist);
 
 protected:
-    BytesSpeed _speed;
+    BytesSpeed _speed[TrackMax];
 
 private:
     time_t _create_stamp;
diff --git a/src/Extension/AAC.cpp b/src/Extension/AAC.cpp
index 1a820e42..30b4cf2f 100644
--- a/src/Extension/AAC.cpp
+++ b/src/Extension/AAC.cpp
@@ -185,7 +185,7 @@ Sdp::Ptr AACTrack::getSdp() {
         WarnL << getCodecName() << " Track未准备好";
         return nullptr;
     }
-    return std::make_shared<AACSdp>(getAacCfg(),getAudioSampleRate(), getAudioChannel());
+    return std::make_shared<AACSdp>(getAacCfg(), getAudioSampleRate(), getAudioChannel(), getBitRate() / 1024);
 }
 
 }//namespace mediakit
\ No newline at end of file
diff --git a/src/Extension/AAC.h b/src/Extension/AAC.h
index 243f919f..0dd5ecaf 100644
--- a/src/Extension/AAC.h
+++ b/src/Extension/AAC.h
@@ -177,10 +177,12 @@ public:
     AACSdp(const string &aac_cfg,
            int sample_rate,
            int channels,
-           int payload_type = 98,
-           int bitrate = 128) : Sdp(sample_rate,payload_type){
+           int bitrate = 128,
+           int payload_type = 98) : Sdp(sample_rate,payload_type){
         _printer << "m=audio 0 RTP/AVP " << payload_type << "\r\n";
-        _printer << "b=AS:" << bitrate << "\r\n";
+        if (bitrate) {
+            _printer << "b=AS:" << bitrate << "\r\n";
+        }
         _printer << "a=rtpmap:" << payload_type << " MPEG4-GENERIC/" << sample_rate << "/" << channels << "\r\n";
 
         string configStr;
diff --git a/src/Extension/G711.cpp b/src/Extension/G711.cpp
index 15c3d74e..9943e97f 100644
--- a/src/Extension/G711.cpp
+++ b/src/Extension/G711.cpp
@@ -17,7 +17,7 @@ Sdp::Ptr G711Track::getSdp() {
         WarnL << getCodecName() << " Track未准备好";
         return nullptr;
     }
-    return std::make_shared<G711Sdp>(getCodecId(), getAudioSampleRate(), getAudioChannel());
+    return std::make_shared<G711Sdp>(getCodecId(), getAudioSampleRate(), getAudioChannel(), getBitRate() / 1024);
 }
 
 }//namespace mediakit
diff --git a/src/Extension/G711.h b/src/Extension/G711.h
index 72273831..f7d82ee7 100644
--- a/src/Extension/G711.h
+++ b/src/Extension/G711.h
@@ -48,9 +48,12 @@ public:
     G711Sdp(CodecId codecId,
             int sample_rate,
             int channels,
-            int payload_type = 98,
-            int bitrate = 128) : Sdp(sample_rate,payload_type), _codecId(codecId){
+            int bitrate = 128,
+            int payload_type = 98) : Sdp(sample_rate,payload_type), _codecId(codecId){
         _printer << "m=audio 0 RTP/AVP " << payload_type << "\r\n";
+        if (bitrate) {
+            _printer << "b=AS:" << bitrate << "\r\n";
+        }
         _printer << "a=rtpmap:" << payload_type << (codecId == CodecG711A ? " PCMA/" : " PCMU/") << sample_rate  << "/" << channels << "\r\n";
         _printer << "a=control:trackID=" << (int)TrackAudio << "\r\n";
     }
diff --git a/src/Extension/H264.cpp b/src/Extension/H264.cpp
index 910e79e2..84fc3e1c 100644
--- a/src/Extension/H264.cpp
+++ b/src/Extension/H264.cpp
@@ -123,7 +123,7 @@ Sdp::Ptr H264Track::getSdp() {
         WarnL << getCodecName() << " Track未准备好";
         return nullptr;
     }
-    return std::make_shared<H264Sdp>(getSps(),getPps());
+    return std::make_shared<H264Sdp>(getSps(), getPps(), getBitRate() / 1024);
 }
 }//namespace mediakit
 
diff --git a/src/Extension/H264.h b/src/Extension/H264.h
index 02eba813..589701cf 100644
--- a/src/Extension/H264.h
+++ b/src/Extension/H264.h
@@ -292,11 +292,13 @@ public:
      */
     H264Sdp(const string &strSPS,
             const string &strPPS,
-            int payload_type = 96,
-            int bitrate = 4000) : Sdp(90000,payload_type) {
+            int bitrate = 4000,
+            int payload_type = 96) : Sdp(90000,payload_type) {
         //视频通道
         _printer << "m=video 0 RTP/AVP " << payload_type << "\r\n";
-        _printer << "b=AS:" << bitrate << "\r\n";
+        if (bitrate) {
+            _printer << "b=AS:" << bitrate << "\r\n";
+        }
         _printer << "a=rtpmap:" << payload_type << " H264/" << 90000 << "\r\n";
         _printer << "a=fmtp:" << payload_type << " packetization-mode=1; profile-level-id=";
 
diff --git a/src/Extension/H265.cpp b/src/Extension/H265.cpp
index f46a756d..0283f33c 100644
--- a/src/Extension/H265.cpp
+++ b/src/Extension/H265.cpp
@@ -55,7 +55,7 @@ Sdp::Ptr H265Track::getSdp() {
         WarnL << getCodecName() << " Track未准备好";
         return nullptr;
     }
-    return std::make_shared<H265Sdp>(getVps(),getSps(),getPps());
+    return std::make_shared<H265Sdp>(getVps(), getSps(), getPps(), getBitRate() / 1024);
 }
 }//namespace mediakit
 
diff --git a/src/Extension/H265.h b/src/Extension/H265.h
index 4fc3d82e..a4014c2f 100644
--- a/src/Extension/H265.h
+++ b/src/Extension/H265.h
@@ -321,11 +321,13 @@ public:
     H265Sdp(const string &strVPS,
             const string &strSPS,
             const string &strPPS,
-            int payload_type = 96,
-            int bitrate = 4000) : Sdp(90000,payload_type) {
+            int bitrate = 4000,
+            int payload_type = 96) : Sdp(90000,payload_type) {
         //视频通道
         _printer << "m=video 0 RTP/AVP " << payload_type << "\r\n";
-        _printer << "b=AS:" << bitrate << "\r\n";
+        if (bitrate) {
+            _printer << "b=AS:" << bitrate << "\r\n";
+        }
         _printer << "a=rtpmap:" << payload_type << " H265/" << 90000 << "\r\n";
         _printer << "a=fmtp:" << payload_type << " ";
         _printer << "sprop-vps=";
diff --git a/src/Extension/Opus.cpp b/src/Extension/Opus.cpp
index e9dea37d..ada06174 100644
--- a/src/Extension/Opus.cpp
+++ b/src/Extension/Opus.cpp
@@ -17,7 +17,7 @@ Sdp::Ptr OpusTrack::getSdp() {
         WarnL << getCodecName() << " Track未准备好";
         return nullptr;
     }
-    return std::make_shared<OpusSdp>(getAudioSampleRate(), getAudioChannel());
+    return std::make_shared<OpusSdp>(getAudioSampleRate(), getAudioChannel(), getBitRate() / 1024);
 }
 
 }//namespace mediakit
\ No newline at end of file
diff --git a/src/Extension/Opus.h b/src/Extension/Opus.h
index 144afb77..5402d4a9 100644
--- a/src/Extension/Opus.h
+++ b/src/Extension/Opus.h
@@ -46,9 +46,12 @@ public:
      */
     OpusSdp(int sample_rate,
             int channels,
-            int payload_type = 98,
-            int bitrate = 128) : Sdp(sample_rate,payload_type){
+            int bitrate = 128,
+            int payload_type = 98) : Sdp(sample_rate,payload_type){
         _printer << "m=audio 0 RTP/AVP " << payload_type << "\r\n";
+        if (bitrate) {
+            _printer << "b=AS:" << bitrate << "\r\n";
+        }
         _printer << "a=rtpmap:" << payload_type << " opus/" << sample_rate  << "/" << channels << "\r\n";
         _printer << "a=control:trackID=" << (int)TrackAudio << "\r\n";
     }
diff --git a/src/Extension/Track.h b/src/Extension/Track.h
index 788af78f..70f02ead 100644
--- a/src/Extension/Track.h
+++ b/src/Extension/Track.h
@@ -32,7 +32,6 @@ public:
 
     /**
      * 是否准备好，准备好才能获取譬如sps pps等信息
-     * @return
      */
     virtual bool ready() = 0;
 
@@ -40,7 +39,6 @@ public:
      * 克隆接口，用于复制本对象用
      * 在调用该接口时只会复制派生类的信息
      * 环形缓存和代理关系不能拷贝，否则会关系紊乱
-     * @return
      */
     virtual Track::Ptr clone() = 0;
 
@@ -50,12 +48,28 @@ public:
      */
     virtual Sdp::Ptr getSdp() = 0;
 
+    /**
+     * 返回比特率
+     * @return 比特率
+     */
+    virtual int getBitRate() const { return _bit_rate; }
+
+    /**
+     * 设置比特率
+     * @param bit_rate 比特率
+     */
+    virtual void setBitRate(int bit_rate) { _bit_rate = bit_rate; }
+
     /**
      * 复制拷贝，只能拷贝派生类的信息，
      * 环形缓存和代理关系不能拷贝，否则会关系紊乱
-     * @param that
      */
-    Track(const Track &that){}
+    Track(const Track &that){
+        _bit_rate = that._bit_rate;
+    }
+
+private:
+    int _bit_rate = 0;
 };
 
 /**
@@ -67,19 +81,16 @@ public:
 
     /**
      * 返回视频高度
-     * @return
      */
     virtual int getVideoHeight() const {return 0;};
 
     /**
      * 返回视频宽度
-     * @return
      */
     virtual int getVideoWidth() const {return 0;};
 
     /**
      * 返回视频fps
-     * @return
      */
     virtual float getVideoFps() const {return 0;};
 };
@@ -93,19 +104,16 @@ public:
 
     /**
      * 返回音频采样率
-     * @return
      */
     virtual int getAudioSampleRate() const  {return 0;};
 
     /**
      * 返回音频采样位数，一般为16或8
-     * @return
      */
     virtual int getAudioSampleBit() const {return 0;};
 
     /**
      * 返回音频通道数
-     * @return
      */
     virtual int getAudioChannel() const {return 0;};
 };
diff --git a/src/FMP4/FMP4MediaSource.h b/src/FMP4/FMP4MediaSource.h
index ef4af868..16fb2ab2 100644
--- a/src/FMP4/FMP4MediaSource.h
+++ b/src/FMP4/FMP4MediaSource.h
@@ -88,7 +88,7 @@ public:
         if (key) {
             _have_video = true;
         }
-        _speed += packet->size();
+        _speed[TrackVideo] += packet->size();
         auto stamp = packet->time_stamp;
         PacketCache<FMP4Packet>::inputPacket(stamp, true, std::move(packet), key);
     }
diff --git a/src/Http/HttpTSPlayer.cpp b/src/Http/HttpTSPlayer.cpp
index 706e1df3..cd6d6fb0 100644
--- a/src/Http/HttpTSPlayer.cpp
+++ b/src/Http/HttpTSPlayer.cpp
@@ -20,6 +20,7 @@ HttpTSPlayer::HttpTSPlayer(const EventPoller::Ptr &poller, bool split_ts){
 HttpTSPlayer::~HttpTSPlayer() {}
 
 int64_t HttpTSPlayer::onResponseHeader(const string &status, const HttpClient::HttpHeader &headers) {
+    _status = status;
     if (status != "200" && status != "206") {
         //http状态码不符合预期
         shutdown(SockException(Err_other, StrPrinter << "bad http status code:" + status));
@@ -35,6 +36,9 @@ int64_t HttpTSPlayer::onResponseHeader(const string &status, const HttpClient::H
 }
 
 void HttpTSPlayer::onResponseBody(const char *buf, int64_t size, int64_t recvedSize, int64_t totalSize) {
+    if (_status != "200" && _status != "206") {
+        return;
+    }
     if (recvedSize == size) {
         //开始接收数据
         if (buf[0] == TS_SYNC_BYTE) {
@@ -78,4 +82,4 @@ void HttpTSPlayer::setOnPacket(const TSSegment::onSegment &cb) {
     _on_segment = cb;
 }
 
-}//namespace mediakit
\ No newline at end of file
+}//namespace mediakit
diff --git a/src/Http/HttpTSPlayer.h b/src/Http/HttpTSPlayer.h
index 6b12a453..7dc985f0 100644
--- a/src/Http/HttpTSPlayer.h
+++ b/src/Http/HttpTSPlayer.h
@@ -48,6 +48,7 @@ private:
     bool _is_first_packet_ts = false;
     //是否判断是否是ts并split
     bool _split_ts;
+    string _status;
     TSSegment _segment;
     onShutdown _on_disconnect;
     TSSegment::onSegment _on_segment;
diff --git a/src/Record/HlsMediaSource.h b/src/Record/HlsMediaSource.h
index 32e46cc5..aa624b83 100644
--- a/src/Record/HlsMediaSource.h
+++ b/src/Record/HlsMediaSource.h
@@ -80,7 +80,7 @@ public:
     }
 
     void onSegmentSize(uint64_t bytes) {
-        _speed += bytes;
+        _speed[TrackVideo] += bytes;
     }
 
 private:
diff --git a/src/Record/MP4Recorder.cpp b/src/Record/MP4Recorder.cpp
index b9922b17..431ed8ca 100644
--- a/src/Record/MP4Recorder.cpp
+++ b/src/Record/MP4Recorder.cpp
@@ -11,6 +11,7 @@
 #ifdef ENABLE_MP4
 #include <ctime>
 #include <sys/stat.h>
+#include "Util/File.h"
 #include "Common/config.h"
 #include "MP4Recorder.h"
 #include "Thread/WorkThreadPool.h"
@@ -77,12 +78,19 @@ void MP4Recorder::asyncClose() {
         const_cast<RecordInfo&>(info).time_len = ::time(NULL) - info.start_time;
         //关闭mp4非常耗时，所以要放在后台线程执行
         muxer->closeMP4();
-        //临时文件名改成正式文件名，防止mp4未完成时被访问
-        rename(strFileTmp.data(),strFile.data());
+
         //获取文件大小
         struct stat fileData;
-        stat(strFile.data(), &fileData);
-        const_cast<RecordInfo&>(info).file_size = fileData.st_size;
+        stat(strFileTmp.data(), &fileData);
+        const_cast<RecordInfo &>(info).file_size = fileData.st_size;
+        if (fileData.st_size < 1024) {
+            //录像文件太小，删除之
+            File::delete_file(strFileTmp.data());
+            return;
+        }
+        //临时文件名改成正式文件名，防止mp4未完成时被访问
+        rename(strFileTmp.data(),strFile.data());
+
         /////record 业务逻辑//////
         NoticeCenter::Instance().emitEvent(Broadcast::kBroadcastRecordMP4,info);
     });
diff --git a/src/Rtmp/Rtmp.cpp b/src/Rtmp/Rtmp.cpp
index b7046163..0c80692c 100644
--- a/src/Rtmp/Rtmp.cpp
+++ b/src/Rtmp/Rtmp.cpp
@@ -12,7 +12,7 @@
 #include "Extension/Factory.h"
 namespace mediakit{
 
-VideoMeta::VideoMeta(const VideoTrack::Ptr &video,int datarate ){
+VideoMeta::VideoMeta(const VideoTrack::Ptr &video){
     if(video->getVideoWidth() > 0 ){
         _metadata.set("width", video->getVideoWidth());
     }
@@ -22,13 +22,17 @@ VideoMeta::VideoMeta(const VideoTrack::Ptr &video,int datarate ){
     if(video->getVideoFps() > 0 ){
         _metadata.set("framerate", video->getVideoFps());
     }
-    _metadata.set("videodatarate", datarate);
+    if (video->getBitRate()) {
+        _metadata.set("videodatarate", video->getBitRate() / 1024);
+    }
     _codecId = video->getCodecId();
     _metadata.set("videocodecid", Factory::getAmfByCodecId(_codecId));
 }
 
-AudioMeta::AudioMeta(const AudioTrack::Ptr &audio,int datarate){
-    _metadata.set("audiodatarate", datarate);
+AudioMeta::AudioMeta(const AudioTrack::Ptr &audio){
+    if (audio->getBitRate()) {
+        _metadata.set("audiodatarate", audio->getBitRate() / 1024);
+    }
     if(audio->getAudioSampleRate() > 0){
         _metadata.set("audiosamplerate", audio->getAudioSampleRate());
     }
diff --git a/src/Rtmp/Rtmp.h b/src/Rtmp/Rtmp.h
index 4c9e3d8e..3d800e78 100644
--- a/src/Rtmp/Rtmp.h
+++ b/src/Rtmp/Rtmp.h
@@ -262,7 +262,7 @@ class VideoMeta : public Metadata{
 public:
     typedef std::shared_ptr<VideoMeta> Ptr;
 
-    VideoMeta(const VideoTrack::Ptr &video,int datarate = 5000);
+    VideoMeta(const VideoTrack::Ptr &video);
     virtual ~VideoMeta(){}
 
     CodecId getCodecId() const override{
@@ -276,7 +276,7 @@ class AudioMeta : public Metadata{
 public:
     typedef std::shared_ptr<AudioMeta> Ptr;
 
-    AudioMeta(const AudioTrack::Ptr &audio,int datarate = 160);
+    AudioMeta(const AudioTrack::Ptr &audio);
 
     virtual ~AudioMeta(){}
 
diff --git a/src/Rtmp/RtmpDemuxer.cpp b/src/Rtmp/RtmpDemuxer.cpp
index 53ce4c87..5225ce32 100644
--- a/src/Rtmp/RtmpDemuxer.cpp
+++ b/src/Rtmp/RtmpDemuxer.cpp
@@ -19,6 +19,8 @@ bool RtmpDemuxer::loadMetaData(const AMFValue &val){
         int audiosamplerate = 0;
         int audiochannels = 0;
         int audiosamplesize = 0;
+        int videodatarate = 0;
+        int audiodatarate = 0;
         const AMFValue *audiocodecid = nullptr;
         const AMFValue *videocodecid = nullptr;
         val.object_for_each([&](const string &key, const AMFValue &val) {
@@ -48,16 +50,24 @@ bool RtmpDemuxer::loadMetaData(const AMFValue &val){
                 audiocodecid = &val;
                 return;
             }
+            if (key == "audiodatarate") {
+                audiodatarate = val.as_integer();
+                return;
+            }
+            if (key == "videodatarate") {
+                videodatarate = val.as_integer();
+                return;
+            }
         });
         if (videocodecid) {
             //有视频
             ret = true;
-            makeVideoTrack(*videocodecid);
+            makeVideoTrack(*videocodecid, videodatarate * 1024);
         }
         if (audiocodecid) {
             //有音频
             ret = true;
-            makeAudioTrack(*audiocodecid, audiosamplerate, audiochannels, audiosamplesize);
+            makeAudioTrack(*audiocodecid, audiosamplerate, audiochannels, audiosamplesize, audiodatarate * 1024);
         }
     } catch (std::exception &ex) {
         WarnL << ex.what();
@@ -71,7 +81,7 @@ void RtmpDemuxer::inputRtmp(const RtmpPacket::Ptr &pkt) {
             if (!_try_get_video_track) {
                 _try_get_video_track = true;
                 auto codec = AMFValue(pkt->getMediaType());
-                makeVideoTrack(codec);
+                makeVideoTrack(codec, 0);
             }
             if (_video_rtmp_decoder) {
                 _video_rtmp_decoder->inputRtmp(pkt);
@@ -83,7 +93,7 @@ void RtmpDemuxer::inputRtmp(const RtmpPacket::Ptr &pkt) {
             if (!_try_get_audio_track) {
                 _try_get_audio_track = true;
                 auto codec = AMFValue(pkt->getMediaType());
-                makeAudioTrack(codec, pkt->getAudioSampleRate(), pkt->getAudioChannel(), pkt->getAudioSampleBit());
+                makeAudioTrack(codec, pkt->getAudioSampleRate(), pkt->getAudioChannel(), pkt->getAudioSampleBit(), 0);
             }
             if (_audio_rtmp_decoder) {
                 _audio_rtmp_decoder->inputRtmp(pkt);
@@ -94,10 +104,11 @@ void RtmpDemuxer::inputRtmp(const RtmpPacket::Ptr &pkt) {
     }
 }
 
-void RtmpDemuxer::makeVideoTrack(const AMFValue &videoCodec) {
+void RtmpDemuxer::makeVideoTrack(const AMFValue &videoCodec, int bit_rate) {
     //生成Track对象
     _videoTrack = dynamic_pointer_cast<VideoTrack>(Factory::getVideoTrackByAmf(videoCodec));
     if (_videoTrack) {
+        _videoTrack->setBitRate(bit_rate);
         //生成rtmpCodec对象以便解码rtmp
         _video_rtmp_decoder = Factory::getRtmpCodecByTrack(_videoTrack, false);
         if (_video_rtmp_decoder) {
@@ -112,10 +123,11 @@ void RtmpDemuxer::makeVideoTrack(const AMFValue &videoCodec) {
     }
 }
 
-void RtmpDemuxer::makeAudioTrack(const AMFValue &audioCodec,int sample_rate, int channels, int sample_bit) {
+void RtmpDemuxer::makeAudioTrack(const AMFValue &audioCodec,int sample_rate, int channels, int sample_bit, int bit_rate) {
     //生成Track对象
     _audioTrack = dynamic_pointer_cast<AudioTrack>(Factory::getAudioTrackByAmf(audioCodec, sample_rate, channels, sample_bit));
     if (_audioTrack) {
+        _audioTrack->setBitRate(bit_rate);
         //生成rtmpCodec对象以便解码rtmp
         _audio_rtmp_decoder = Factory::getRtmpCodecByTrack(_audioTrack, false);
         if (_audio_rtmp_decoder) {
diff --git a/src/Rtmp/RtmpDemuxer.h b/src/Rtmp/RtmpDemuxer.h
index 253cad69..f339ced3 100644
--- a/src/Rtmp/RtmpDemuxer.h
+++ b/src/Rtmp/RtmpDemuxer.h
@@ -39,8 +39,8 @@ public:
     void inputRtmp(const RtmpPacket::Ptr &pkt);
 
 private:
-    void makeVideoTrack(const AMFValue &val);
-    void makeAudioTrack(const AMFValue &val, int sample_rate, int channels, int sample_bit);
+    void makeVideoTrack(const AMFValue &val, int bit_rate);
+    void makeAudioTrack(const AMFValue &val, int sample_rate, int channels, int sample_bit, int bit_rate);
 
 private:
     bool _try_get_video_track = false;
diff --git a/src/Rtmp/RtmpMediaSource.h b/src/Rtmp/RtmpMediaSource.h
index 8d309654..483ff1ba 100644
--- a/src/Rtmp/RtmpMediaSource.h
+++ b/src/Rtmp/RtmpMediaSource.h
@@ -119,7 +119,8 @@ public:
      * @param pkt rtmp包
      */
     void onWrite(RtmpPacket::Ptr pkt, bool = true) override {
-        _speed += pkt->size();
+        bool is_video = pkt->type_id == MSG_VIDEO;
+        _speed[is_video ? TrackVideo : TrackAudio] += pkt->size();
         //保存当前时间戳
         switch (pkt->type_id) {
             case MSG_VIDEO : _track_stamps[TrackVideo] = pkt->time_stamp, _have_video = true; break;
@@ -153,7 +154,6 @@ public:
             }
         }
         bool key = pkt->isVideoKeyFrame();
-        bool is_video = pkt->type_id == MSG_VIDEO;
         auto stamp  = pkt->time_stamp;
         PacketCache<RtmpPacket>::inputPacket(stamp, is_video, std::move(pkt), key);
     }
diff --git a/src/Rtsp/RtpReceiver.cpp b/src/Rtsp/RtpReceiver.cpp
index 3ae03e01..75d5b45e 100644
--- a/src/Rtsp/RtpReceiver.cpp
+++ b/src/Rtsp/RtpReceiver.cpp
@@ -101,16 +101,18 @@ bool RtpReceiver::handleOneRtp(int track_index, TrackType type, int samplerate,
     //ssrc匹配正确，不匹配计数清零
     _ssrc_err_count[track_index] = 0;
 
-    //获取rtp中媒体数据偏移量
-    rtp.offset = 12 + 4;
+    //rtp 12个固定字节头
+    rtp.offset = 12;
+    //rtp有csrc
     rtp.offset += 4 * csrc;
-    if (ext && rtp_raw_len >= rtp.offset) {
-        /* calculate the header extension length (stored as number of 32-bit words) */
-        ext = (AV_RB16(rtp_raw_ptr + rtp.offset - 2) + 1) << 2;
-        rtp.offset += ext;
+    if (ext) {
+        //rtp有ext
+        uint16_t reserved = AV_RB16(rtp_raw_ptr + rtp.offset);
+        uint16_t extlen = AV_RB16(rtp_raw_ptr + rtp.offset + 2) << 2;
+        rtp.offset += extlen + 4;
     }
 
-    if (rtp_raw_len + 4 <= rtp.offset) {
+    if (rtp_raw_len <= rtp.offset) {
         WarnL << "无有效负载的rtp包:" << rtp_raw_len << " <= " << (int) rtp.offset;
         return false;
     }
@@ -128,9 +130,10 @@ bool RtpReceiver::handleOneRtp(int track_index, TrackType type, int samplerate,
     payload_ptr[1] = rtp.interleaved;
     payload_ptr[2] = rtp_raw_len >> 8;
     payload_ptr[3] = (rtp_raw_len & 0x00FF);
+    //添加rtp over tcp前4个字节的偏移量
+    rtp.offset += 4;
     //拷贝rtp负载
     memcpy(payload_ptr + 4, rtp_raw_ptr, rtp_raw_len);
-
     //排序rtp
     auto seq = rtp_ptr->sequence;
     _rtp_sortor[track_index].sortPacket(seq, std::move(rtp_ptr));
diff --git a/src/Rtsp/RtspDemuxer.cpp b/src/Rtsp/RtspDemuxer.cpp
index 2c406b2a..cee1aab4 100644
--- a/src/Rtsp/RtspDemuxer.cpp
+++ b/src/Rtsp/RtspDemuxer.cpp
@@ -63,11 +63,21 @@ bool RtspDemuxer::inputRtp(const RtpPacket::Ptr & rtp) {
     }
 }
 
+static void setBitRate(const SdpTrack::Ptr &sdp, const Track::Ptr &track){
+    if (!sdp->_b.empty()) {
+        int data_rate = 0;
+        sscanf(sdp->_b.data(), "AS:%d", &data_rate);
+        if (data_rate) {
+            track->setBitRate(data_rate * 1024);
+        }
+    }
+}
 
 void RtspDemuxer::makeAudioTrack(const SdpTrack::Ptr &audio) {
     //生成Track对象
     _audioTrack = dynamic_pointer_cast<AudioTrack>(Factory::getTrackBySdp(audio));
     if(_audioTrack){
+        setBitRate(audio, _audioTrack);
         //生成RtpCodec对象以便解码rtp
         _audioRtpDecoder = Factory::getRtpDecoderByTrack(_audioTrack);
         if(_audioRtpDecoder){
@@ -85,6 +95,7 @@ void RtspDemuxer::makeVideoTrack(const SdpTrack::Ptr &video) {
     //生成Track对象
     _videoTrack = dynamic_pointer_cast<VideoTrack>(Factory::getTrackBySdp(video));
     if(_videoTrack){
+        setBitRate(video, _videoTrack);
         //生成RtpCodec对象以便解码rtp
         _videoRtpDecoder = Factory::getRtpDecoderByTrack(_videoTrack);
         if(_videoRtpDecoder){
diff --git a/src/Rtsp/RtspMediaSource.h b/src/Rtsp/RtspMediaSource.h
index 119a3e4c..77b5d97b 100644
--- a/src/Rtsp/RtspMediaSource.h
+++ b/src/Rtsp/RtspMediaSource.h
@@ -157,7 +157,7 @@ public:
      * @param keyPos 该包是否为关键帧的第一个包
      */
     void onWrite(RtpPacket::Ptr rtp, bool keyPos) override {
-        _speed += rtp->size();
+        _speed[rtp->type] += rtp->size();
         assert(rtp->type >= 0 && rtp->type < TrackMax);
         auto &track = _tracks[rtp->type];
         if (track) {
diff --git a/src/TS/TSMediaSource.h b/src/TS/TSMediaSource.h
index f13ad1c1..10e6fe77 100644
--- a/src/TS/TSMediaSource.h
+++ b/src/TS/TSMediaSource.h
@@ -65,7 +65,7 @@ public:
      * @param key 是否为关键帧第一个包
      */
     void onWrite(TSPacket::Ptr packet, bool key) override {
-        _speed += packet->size();
+        _speed[TrackVideo] += packet->size();
         if (!_ring) {
             createRing();
         }