diff --git a/api/source/mk_media.cpp b/api/source/mk_media.cpp
index 9ee56fe6..0abe2f46 100755
--- a/api/source/mk_media.cpp
+++ b/api/source/mk_media.cpp
@@ -187,7 +187,6 @@ API_EXPORT int API_CALL mk_media_init_video(mk_media ctx, int codec_id, int widt
     info.iWidth = width;
     info.iHeight = height;
     info.iBitRate = bit_rate;
-    (*obj)->getChannel()->initVideo(info);
     return (*obj)->getChannel()->initVideo(info);
 }
 
diff --git a/api/source/mk_track.cpp b/api/source/mk_track.cpp
index 6d84ac70..b4df453d 100644
--- a/api/source/mk_track.cpp
+++ b/api/source/mk_track.cpp
@@ -10,12 +10,13 @@
 
 #include "mk_track.h"
 #include "Extension/Track.h"
+#include "Extension/Factory.h"
 
 using namespace std;
 using namespace toolkit;
 using namespace mediakit;
 
-class VideoTrackForC : public VideoTrack {
+class VideoTrackForC : public VideoTrack, public std::enable_shared_from_this<VideoTrackForC> {
 public:
     VideoTrackForC(int codec_id, codec_args *args) {
         _codec_id = (CodecId) codec_id;
@@ -49,7 +50,8 @@ public:
     }
 
     Track::Ptr clone() override {
-        return std::make_shared<std::remove_reference<decltype(*this)>::type>(*this);
+        auto track_in = std::shared_ptr<Track>(shared_from_this());
+        return Factory::getTrackByAbstractTrack(track_in);
     }
 
     Sdp::Ptr getSdp() override {
@@ -61,15 +63,16 @@ private:
     codec_args _args;
 };
 
-class AudioTrackForC : public AudioTrackImp {
+class AudioTrackForC : public AudioTrackImp, public std::enable_shared_from_this<AudioTrackForC> {
 public:
     ~AudioTrackForC() override = default;
 
     AudioTrackForC(int codec_id, codec_args *args) :
-            AudioTrackImp((CodecId) codec_id, args->audio.sample_rate, args->audio.channels, 16) {}
+        AudioTrackImp((CodecId) codec_id, args->audio.sample_rate, args->audio.channels, 16) {}
 
     Track::Ptr clone() override {
-        return std::make_shared<std::remove_reference<decltype(*this)>::type>(*this);
+        auto track_in = std::shared_ptr<Track>(shared_from_this());
+        return Factory::getTrackByAbstractTrack(track_in);
     }
 
     Sdp::Ptr getSdp() override {
diff --git a/api/tests/h264_media_server.c b/api/tests/h264_media_server.c
index 3e0084f5..4ca99ffd 100644
--- a/api/tests/h264_media_server.c
+++ b/api/tests/h264_media_server.c
@@ -64,8 +64,12 @@ int main(int argc, char *argv[]) {
 
     mk_media media = mk_media_create("__defaultVhost__", "live", "test", 0, 0, 0);
     //h264的codec
-    mk_media_init_video(media, 0, 0, 0, 0, 2 * 104 * 1024);
+    //mk_media_init_video(media, 0, 0, 0, 0, 2 * 104 * 1024);
+    codec_args v_args={0};
+    mk_track v_track = mk_track_create(MKCodecH264,&v_args);
+    mk_media_init_track(media,v_track);
     mk_media_init_complete(media);
+    mk_track_unref(v_track);
 
     //创建h264分帧器
     mk_h264_splitter splitter = mk_h264_splitter_create(on_h264_frame, media);
diff --git a/src/Extension/Factory.cpp b/src/Extension/Factory.cpp
index d7757ecb..fae8dd8b 100644
--- a/src/Extension/Factory.cpp
+++ b/src/Extension/Factory.cpp
@@ -95,6 +95,32 @@ Track::Ptr Factory::getTrackBySdp(const SdpTrack::Ptr &track) {
     }
 }
 
+
+Track::Ptr Factory::getTrackByAbstractTrack(const Track::Ptr& track) {
+    auto codec = track->getCodecId();
+    switch (codec) {
+    case CodecG711A:
+    case CodecG711U: {
+        auto audio_track = dynamic_pointer_cast<AudioTrackImp>(track);
+        return std::make_shared<G711Track>(codec, audio_track->getAudioSampleRate(), audio_track->getAudioChannel(), 16);
+    }
+    case CodecL16: {
+        auto audio_track = dynamic_pointer_cast<AudioTrackImp>(track);
+        return std::make_shared<L16Track>(audio_track->getAudioSampleRate(), audio_track->getAudioChannel());
+    }
+    case CodecAAC  : return std::make_shared<AACTrack>();
+    case CodecOpus : return std::make_shared<OpusTrack>();
+    case CodecH265 : return std::make_shared<H265Track>();
+    case CodecH264 : return std::make_shared<H264Track>();
+
+    default: {
+        //其他codec不支持
+        WarnL << "暂不支持该该编码类型创建Track:" << track->getCodecName();
+        return nullptr;
+    }
+    }
+}
+
 RtpCodec::Ptr Factory::getRtpEncoderBySdp(const Sdp::Ptr &sdp) {
     GET_CONFIG(uint32_t,audio_mtu,Rtp::kAudioMtuSize);
     GET_CONFIG(uint32_t,video_mtu,Rtp::kVideoMtuSize);
diff --git a/src/Extension/Factory.h b/src/Extension/Factory.h
index 3e5684f9..75c968ce 100644
--- a/src/Extension/Factory.h
+++ b/src/Extension/Factory.h
@@ -27,6 +27,11 @@ public:
      */
     static Track::Ptr getTrackBySdp(const SdpTrack::Ptr &track);
 
+    /**
+     * 根据c api 抽象的Track生成具体Track对象
+     */
+    static Track::Ptr getTrackByAbstractTrack(const Track::Ptr& track);
+
     /**
      * 根据sdp生成rtp编码器
      * @param sdp sdp对象