diff --git a/NanaRecorder/NanaRecorder.cpp b/NanaRecorder/NanaRecorder.cpp
index 323cdfc..55aab38 100644
--- a/NanaRecorder/NanaRecorder.cpp
+++ b/NanaRecorder/NanaRecorder.cpp
@@ -66,7 +66,10 @@ void NanaRecorder::startBtnClicked() {
         info.insert("recordPath", path);
         m_recorder = onlyet::createRecorder(info);
     }
-    m_recorder->startRecord();
+    if (-1 == m_recorder->startRecord()) {
+        qDebug() << "startRecord failed";
+        return;
+    }
 
     m_recordDuration = 0;
     ui.durationLabel->setText("00:00:00");
diff --git a/RecordCore/src/AudioCapture.cpp b/RecordCore/src/AudioCapture.cpp
index 56fa6e1..bcadb80 100644
--- a/RecordCore/src/AudioCapture.cpp
+++ b/RecordCore/src/AudioCapture.cpp
@@ -92,6 +92,7 @@ int AudioCapture::initCapture(AudioCaptureDevice dev) {
 
     string audioDeviceName = FFmpegHelper::getAudioDevice(dev);
     if ("" == audioDeviceName) {
+        qCritical() << "Can not find audio device";
         return -1;
     }
     if ((ret = avformat_open_input(&m_aFmtCtx, audioDeviceName.c_str(), ifmt, &options)) != 0) {
diff --git a/RecordCore/src/FFmpegHelper.cpp b/RecordCore/src/FFmpegHelper.cpp
index ff89c28..0beedd2 100644
--- a/RecordCore/src/FFmpegHelper.cpp
+++ b/RecordCore/src/FFmpegHelper.cpp
@@ -113,7 +113,6 @@ std::string FFmpegHelper::getAudioDevice(AudioCaptureDevice type) {
     hr = pCreateDevEnum->CreateClassEnumerator(guid, &pEm, 0);
     if (hr != NOERROR) {
         ::CoUninitialize();
-        //return "";
         return ret;
     }
 
@@ -137,14 +136,9 @@ std::string FFmpegHelper::getAudioDevice(AudioCaptureDevice type) {
 
                 for (const auto& dev : audioDevSet) {
                     if (tmpName.find(dev) != string::npos) {
-#if 0
-                        tmpName = QString::fromLocal8Bit(tmpName.c_str()).toStdString();
-                        qDebug() << "Audio device:" << QString::fromLocal8Bit(tmpName.c_str());
-#else
                         // 包含中文需要转UTF8编码
                         tmpName = AnsiToUTF8(tmpName.c_str(), tmpName.length());
                         qInfo() << "Audio device:" << QString::fromStdString(tmpName);
-#endif
                         ret     = tmpName;
                         isFound = true;
                         break;
diff --git a/RecordCore/src/Recorder.cpp b/RecordCore/src/Recorder.cpp
index 11750a3..6c095e2 100644
--- a/RecordCore/src/Recorder.cpp
+++ b/RecordCore/src/Recorder.cpp
@@ -138,11 +138,12 @@ int Recorder::startRecord() {
 
     FFmpegHelper::registerAll();
 
-    startCapture();
-    // init
+    int ret = 0;
+    ret = startCapture();
+    if (ret != 0) return ret;
+
     m_videoFrameQueue->initBuf(g_record.outWidth, g_record.outHeight, AV_PIX_FMT_YUV420P);
 
-    int ret = 0;
     if (m_amixFilter) {
         ret = m_amixFilter->init(
             {nullptr, nullptr,
@@ -158,7 +159,7 @@ int Recorder::startRecord() {
              m_microphoneCap->channel(),
              m_microphoneCap->channelLayout()},
             {nullptr, nullptr, {1, AV_TIME_BASE}, g_record.sampleRate, AV_SAMPLE_FMT_FLTP, g_record.channel, av_get_default_channel_layout(g_record.channel)});
-        if (ret != 0) return -1;
+        if (ret != 0) return ret;
 
         m_amixFilter->setFilterFrameCb(bind(static_cast<void (Recorder::*)(AVFrame*)>(&Recorder::writeAudioFrameCb), this, _1));
         m_amixFilter->start();
@@ -179,7 +180,7 @@ int Recorder::startRecord() {
         ctx_out.sample_rate    = g_record.sampleRate;
 
         ret = m_resampleFilter->init(ctx_in, ctx_out);
-        if (ret != 0) return -1;
+        if (ret != 0) return ret;
 
         m_resampleFilter->setFilterFrameCb(bind(static_cast<void (Recorder::*)(AVFrame*)>(&Recorder::writeAudioFrameCb), this, _1));
         m_resampleFilter->start();
@@ -187,14 +188,13 @@ int Recorder::startRecord() {
 
     m_outputer->init();
 
-    // start
     m_startTime = duration_cast<chrono::microseconds>(chrono::system_clock::now().time_since_epoch()).count();
     qInfo() << "start time:" << QDateTime::fromMSecsSinceEpoch(m_startTime / 1000).toString("yyyy-MM-dd hh:mm:ss.zzz");
     m_outputer->start(m_startTime);
 
     g_record.status = Running;
 
-    return 0;
+    return ret;
 }
 
 int Recorder::pauseRecord() {
@@ -236,15 +236,17 @@ int Recorder::stopRecord() {
     return 0;
 }
 
-void Recorder::startCapture() {
-    int ret;
-    m_videoCap->startCapture();
+int Recorder::startCapture() {
+    int ret = 0;
+    ret = m_videoCap->startCapture();
+    if (-1 == ret) return ret;
     if (g_record.enableAudio) {
         if (m_speakerCap) {
             ret = m_speakerCap->startCapture(AudioCaptureDevice::Speaker);
             // 找不到音频或打开失败
             if (-1 == ret) {
                 g_record.enableAudio = false;
+                return ret;
             }
         }
         if (m_microphoneCap) {
@@ -252,9 +254,11 @@ void Recorder::startCapture() {
             // 找不到音频或打开失败
             if (-1 == ret) {
                 g_record.enableAudio = false;
+                return ret;
             }
         }
     }
+    return ret;
 }
 
 void Recorder::stopCapture() {
diff --git a/RecordCore/src/Recorder.h b/RecordCore/src/Recorder.h
index a1c61b1..8714f39 100644
--- a/RecordCore/src/Recorder.h
+++ b/RecordCore/src/Recorder.h
@@ -40,7 +40,7 @@ class Recorder : public IRecorder {
     int  stopRecord() override;
 
 private:
-    void startCapture();
+    int startCapture();
     void stopCapture();
 
     void       writeVideoFrameCb(AVFrame* frame, const VideoCaptureInfo& info);