From b1dc519917cb441161dbe5db2d70b7958a0a068e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=B5=AE=E7=94=9F=E8=8B=A5=E6=A2=A6?= <1070753498@qq.com>
Date: Thu, 29 Feb 2024 18:40:35 +0800
Subject: [PATCH] =?UTF-8?q?=E9=87=8D=E6=9E=84transcode-3=EF=BC=9B?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 README.md                                  |   4 +-
 examples/player/CMakeLists.txt             |  13 +-
 examples/player/main.cpp                   |   2 +-
 examples/player/player.pro                 |   2 +-
 examples/transcoder/CMakeLists.txt         |  23 +-
 examples/transcoder/audioencoderwidget.cc  |  64 ++++
 examples/transcoder/audioencoderwidget.hpp |  28 ++
 examples/transcoder/main.cc                |   2 +-
 examples/transcoder/mainwindow.cc          | 325 ++++-----------------
 examples/transcoder/mainwindow.hpp         |   2 -
 examples/transcoder/outputwidget.cc        |  64 ++++
 examples/transcoder/outputwidget.hpp       |  27 ++
 examples/transcoder/previewwidget.cc       |   1 +
 examples/transcoder/sourcewidget.cc        |  12 +-
 examples/transcoder/stautuswidget.cc       |  75 +++++
 examples/transcoder/stautuswidget.hpp      |  33 +++
 examples/transcoder/transcoder.pro         |  14 +-
 examples/transcoder/videoencoderwidget.cc  | 293 +++++++++++++++++++
 examples/transcoder/videoencoderwidget.hpp |  54 ++++
 ffmpeg/codeccontext.cpp                    |   4 +-
 ffmpeg/ffmpegutils.cc                      |   4 +-
 ffmpeg/transcoder.cc                       |  17 +-
 ffmpeg/transcoder.hpp                      |   4 +-
 23 files changed, 759 insertions(+), 308 deletions(-)
 create mode 100644 examples/transcoder/audioencoderwidget.cc
 create mode 100644 examples/transcoder/audioencoderwidget.hpp
 create mode 100644 examples/transcoder/outputwidget.cc
 create mode 100644 examples/transcoder/outputwidget.hpp
 create mode 100644 examples/transcoder/stautuswidget.cc
 create mode 100644 examples/transcoder/stautuswidget.hpp
 create mode 100644 examples/transcoder/videoencoderwidget.cc
 create mode 100644 examples/transcoder/videoencoderwidget.hpp

diff --git a/README.md b/README.md
index f3ff6b2..080f2ed 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 - [简体中文](README.md)
 - [English](README.en.md)
 
-## QFfmpegPlayer
+## Player
 
 <div align=center><img src="doc/player.jpeg"></div>
 
@@ -56,7 +56,7 @@ Dialogue: 0,0:01:06.77,0:01:08.00,en,,0000,0000,0000,,Peek-a-boo!\r\n
 subtitles=filename='%1':original_size=%2x%3
 ```
 
-## QFfmpegTranscoder
+## Transcoder
 
 如何设置编码参数以获得更小的文件和更好的视频质量？
 
diff --git a/examples/player/CMakeLists.txt b/examples/player/CMakeLists.txt
index 392ac7e..c875166 100644
--- a/examples/player/CMakeLists.txt
+++ b/examples/player/CMakeLists.txt
@@ -22,14 +22,13 @@ set(PROJECT_SOURCES
     titlewidget.cc
     titlewidget.hpp)
 
-qt_add_executable(QFfmpegPlayer MANUAL_FINALIZATION ${PROJECT_SOURCES})
-target_link_libraries(
-  QFfmpegPlayer PRIVATE ffmpeg thirdparty utils Qt6::Widgets Qt6::Multimedia
-                        Qt6::OpenGLWidgets)
-target_link_libraries(QFfmpegPlayer PRIVATE PkgConfig::ffmpeg)
+qt_add_executable(Player MANUAL_FINALIZATION ${PROJECT_SOURCES})
+target_link_libraries(Player PRIVATE ffmpeg thirdparty utils Qt6::Widgets
+                                     Qt6::Multimedia Qt6::OpenGLWidgets)
+target_link_libraries(Player PRIVATE PkgConfig::ffmpeg)
 if(CMAKE_HOST_APPLE)
   target_link_libraries(
-    QFfmpegPlayer
+    Player
     PRIVATE ${Foundation_LIBRARY}
             ${CoreAudio_LIBRARY}
             ${AVFoundation_LIBRARY}
@@ -46,4 +45,4 @@ if(CMAKE_HOST_APPLE)
             ${CoreVideo_LIBRARY}
             ${CoreServices_LIBRARY})
 endif()
-qt_finalize_executable(QFfmpegPlayer)
+qt_finalize_executable(Player)
diff --git a/examples/player/main.cpp b/examples/player/main.cpp
index 8d34b3b..acc1480 100644
--- a/examples/player/main.cpp
+++ b/examples/player/main.cpp
@@ -11,7 +11,7 @@
 #include <QNetworkProxyFactory>
 #include <QStyle>
 
-#define AppName "QFfmpegPlayer"
+#define AppName "Player"
 
 void setAppInfo()
 {
diff --git a/examples/player/player.pro b/examples/player/player.pro
index f923a5d..a923210 100644
--- a/examples/player/player.pro
+++ b/examples/player/player.pro
@@ -4,7 +4,7 @@ QT       += core gui widgets network multimedia openglwidgets core5compat
 
 TEMPLATE = app
 
-TARGET = QFfmpegPlayer
+TARGET = Player
 
 LIBS += \
     -L$$APP_OUTPUT_PATH/../libs \
diff --git a/examples/transcoder/CMakeLists.txt b/examples/transcoder/CMakeLists.txt
index f2162ae..1bf27b3 100644
--- a/examples/transcoder/CMakeLists.txt
+++ b/examples/transcoder/CMakeLists.txt
@@ -1,21 +1,28 @@
 set(PROJECT_SOURCES
+    audioencoderwidget.cc
+    audioencoderwidget.hpp
     main.cc
     mainwindow.cc
     mainwindow.hpp
+    outputwidget.cc
+    outputwidget.hpp
     previewwidget.cc
     previewwidget.hpp
     sourcewidget.cc
-    sourcewidget.hpp)
+    sourcewidget.hpp
+    stautuswidget.cc
+    stautuswidget.hpp
+    videoencoderwidget.cc
+    videoencoderwidget.hpp)
 
-qt_add_executable(QFfmpegTranscoder MANUAL_FINALIZATION ${PROJECT_SOURCES})
-target_link_libraries(
-  QFfmpegTranscoder PRIVATE ffmpeg thirdparty utils Qt6::Widgets
-                            Qt6::Multimedia Qt6::OpenGLWidgets)
-target_link_libraries(QFfmpegTranscoder PRIVATE PkgConfig::ffmpeg)
+qt_add_executable(Transcoder MANUAL_FINALIZATION ${PROJECT_SOURCES})
+target_link_libraries(Transcoder PRIVATE ffmpeg thirdparty utils Qt6::Widgets
+                                         Qt6::Multimedia Qt6::OpenGLWidgets)
+target_link_libraries(Transcoder PRIVATE PkgConfig::ffmpeg)
 
 if(CMAKE_HOST_APPLE)
   target_link_libraries(
-    QFfmpegTranscoder
+    Transcoder
     PRIVATE ${Foundation_LIBRARY}
             ${CoreAudio_LIBRARY}
             ${AVFoundation_LIBRARY}
@@ -33,4 +40,4 @@ if(CMAKE_HOST_APPLE)
             ${CoreServices_LIBRARY})
 endif()
 
-qt_finalize_executable(QFfmpegTranscoder)
+qt_finalize_executable(Transcoder)
diff --git a/examples/transcoder/audioencoderwidget.cc b/examples/transcoder/audioencoderwidget.cc
new file mode 100644
index 0000000..1ca1d2f
--- /dev/null
+++ b/examples/transcoder/audioencoderwidget.cc
@@ -0,0 +1,64 @@
+#include "audioencoderwidget.hpp"
+
+#include <ffmpeg/ffmpegutils.hpp>
+
+#include <QtWidgets>
+
+class AudioEncoderWidget::AudioEncoderWidgetPrivate
+{
+public:
+    explicit AudioEncoderWidgetPrivate(AudioEncoderWidget *q)
+        : q_ptr(q)
+    {
+        audioEncoderCbx = new QComboBox(q_ptr);
+        audioEncoderCbx->setView(new QListView(audioEncoderCbx));
+        audioEncoderCbx->setMaxVisibleItems(10);
+        audioEncoderCbx->setStyleSheet("QComboBox {combobox-popup:0;}");
+
+        auto audioEncodercs = Ffmpeg::getCurrentSupportCodecs(AVMEDIA_TYPE_AUDIO, true);
+        for (auto iter = audioEncodercs.cbegin(); iter != audioEncodercs.cend(); ++iter) {
+            audioEncoderCbx->addItem(iter.value(), iter.key());
+        }
+        audioEncoderCbx->setCurrentIndex(audioEncoderCbx->findData(AV_CODEC_ID_AAC));
+        audioEncoderCbx->model()->sort(0);
+    }
+
+    AudioEncoderWidget *q_ptr;
+
+    QComboBox *audioEncoderCbx;
+};
+
+AudioEncoderWidget::AudioEncoderWidget(QWidget *parent)
+    : QWidget{parent}
+    , d_ptr(new AudioEncoderWidgetPrivate(this))
+{
+    setupUI();
+    buildConnect();
+}
+
+AudioEncoderWidget::~AudioEncoderWidget() = default;
+
+auto AudioEncoderWidget::setEncoder(AVCodecID codecId) -> bool
+{
+    auto index = d_ptr->audioEncoderCbx->findData(codecId);
+    auto finded = (index >= 0);
+    if (finded) {
+        d_ptr->audioEncoderCbx->setCurrentIndex(index);
+    }
+    return finded;
+}
+
+auto AudioEncoderWidget::encoder() const -> QString
+{
+    return d_ptr->audioEncoderCbx->currentText();
+}
+
+void AudioEncoderWidget::setupUI()
+{
+    auto *layout = new QHBoxLayout(this);
+    layout->addWidget(new QLabel(tr("Encoder:")));
+    layout->addWidget(d_ptr->audioEncoderCbx);
+    layout->addStretch();
+}
+
+void AudioEncoderWidget::buildConnect() {}
diff --git a/examples/transcoder/audioencoderwidget.hpp b/examples/transcoder/audioencoderwidget.hpp
new file mode 100644
index 0000000..da98530
--- /dev/null
+++ b/examples/transcoder/audioencoderwidget.hpp
@@ -0,0 +1,28 @@
+#ifndef AUDIOENCODERWIDGET_HPP
+#define AUDIOENCODERWIDGET_HPP
+
+#include <QWidget>
+
+extern "C" {
+#include <libavcodec/codec_id.h>
+}
+
+class AudioEncoderWidget : public QWidget
+{
+    Q_OBJECT
+public:
+    explicit AudioEncoderWidget(QWidget *parent = nullptr);
+    ~AudioEncoderWidget() override;
+
+    auto setEncoder(AVCodecID codecId) -> bool;
+    [[nodiscard]] auto encoder() const -> QString;
+
+private:
+    void setupUI();
+    void buildConnect();
+
+    class AudioEncoderWidgetPrivate;
+    QScopedPointer<AudioEncoderWidgetPrivate> d_ptr;
+};
+
+#endif // AUDIOENCODERWIDGET_HPP
diff --git a/examples/transcoder/main.cc b/examples/transcoder/main.cc
index fe92f34..ad22f24 100644
--- a/examples/transcoder/main.cc
+++ b/examples/transcoder/main.cc
@@ -10,7 +10,7 @@
 #include <QNetworkProxyFactory>
 #include <QStyle>
 
-#define AppnName "QFfmpegTranscoder"
+#define AppnName "Transcoder"
 
 void setAppInfo()
 {
diff --git a/examples/transcoder/mainwindow.cc b/examples/transcoder/mainwindow.cc
index 52291b7..1295182 100644
--- a/examples/transcoder/mainwindow.cc
+++ b/examples/transcoder/mainwindow.cc
@@ -1,6 +1,10 @@
 #include "mainwindow.hpp"
+#include "audioencoderwidget.hpp"
+#include "outputwidget.hpp"
 #include "previewwidget.hpp"
 #include "sourcewidget.hpp"
+#include "stautuswidget.hpp"
+#include "videoencoderwidget.hpp"
 
 #include <ffmpeg/averror.h>
 #include <ffmpeg/event/errorevent.hpp>
@@ -12,8 +16,6 @@
 
 #include <QtWidgets>
 
-#define BUTTON_SIZE QSize(100, 35)
-
 class MainWindow::MainWindowPrivate
 {
 public:
@@ -27,108 +29,24 @@ class MainWindow::MainWindowPrivate
         sourceWidget = new SourceWidget(q_ptr);
         tabWidget = new QTabWidget(q_ptr);
         previewWidget = new PreviewWidget(q_ptr);
+        videoEncoderWidget = new VideoEncoderWidget(q_ptr);
+        videoEncoderWidget->setPreset(transcoder->presets(), transcoder->preset());
+        videoEncoderWidget->setTune(transcoder->tunes(), transcoder->tune());
+        videoEncoderWidget->setProfile(transcoder->profiles(), transcoder->profile());
+        audioEncoderWidget = new AudioEncoderWidget(q_ptr);
         tabWidget->addTab(previewWidget,
                           QCoreApplication::translate("MainWindowPrivate", "Preview"));
+        tabWidget->addTab(videoEncoderWidget,
+                          QCoreApplication::translate("MainWindowPrivate", "Video"));
+        tabWidget->addTab(audioEncoderWidget,
+                          QCoreApplication::translate("MainWindowPrivate", "Audio"));
 
-        subtitleTextEdit = new QTextEdit(q_ptr);
-        outTextEdit = new QTextEdit(q_ptr);
-
-        audioCodecCbx = new QComboBox(q_ptr);
-        audioCodecCbx->setView(new QListView(audioCodecCbx));
-        audioCodecCbx->setMaxVisibleItems(10);
-        audioCodecCbx->setStyleSheet("QComboBox {combobox-popup:0;}");
-        auto audioCodecs = Ffmpeg::getCurrentSupportCodecs(AVMEDIA_TYPE_AUDIO, true);
-        for (auto iter = audioCodecs.cbegin(); iter != audioCodecs.cend(); ++iter) {
-            audioCodecCbx->addItem(iter.value(), iter.key());
-        }
-        audioCodecCbx->setCurrentIndex(audioCodecCbx->findData(AV_CODEC_ID_AAC));
-
-        videoCodecCbx = new QComboBox(q_ptr);
-        videoCodecCbx->setView(new QListView(videoCodecCbx));
-        videoCodecCbx->setMaxVisibleItems(10);
-        videoCodecCbx->setStyleSheet("QComboBox {combobox-popup:0;}");
-        auto videoCodecs = Ffmpeg::getCurrentSupportCodecs(AVMEDIA_TYPE_VIDEO, true);
-        for (auto iter = videoCodecs.cbegin(); iter != videoCodecs.cend(); ++iter) {
-            videoCodecCbx->addItem(iter.value(), iter.key());
-        }
-        videoCodecCbx->setCurrentIndex(videoCodecCbx->findData(AV_CODEC_ID_H264));
-
-        quailtySbx = new QSpinBox(q_ptr);
-        quailtySbx->setRange(2, 31);
-        quailtySbx->setToolTip(tr("smaller -> better"));
-        crfSbx = new QSpinBox(q_ptr);
-        crfSbx->setRange(0, 51);
-        crfSbx->setToolTip(tr("smaller -> better"));
-        crfSbx->setValue(18);
-        presetCbx = new QComboBox(q_ptr);
-        presetCbx->setView(new QListView(presetCbx));
-        presetCbx->addItems(transcoder->presets());
-        presetCbx->setCurrentText(transcoder->preset());
-        tuneCbx = new QComboBox(q_ptr);
-        tuneCbx->setView(new QListView(tuneCbx));
-        tuneCbx->addItems(transcoder->tunes());
-        tuneCbx->setCurrentText(transcoder->tune());
-        profileCbx = new QComboBox(q_ptr);
-        profileCbx->setView(new QListView(profileCbx));
-        profileCbx->addItems(transcoder->profiles());
-        profileCbx->setCurrentText(transcoder->profile());
-
-        widthLineEdit = new QLineEdit(q_ptr);
-        widthLineEdit->setValidator(new QIntValidator(0, INT_MAX, widthLineEdit));
-        heightLineEdit = new QLineEdit(q_ptr);
-        heightLineEdit->setValidator(new QIntValidator(0, INT_MAX, heightLineEdit));
-        keepAspectRatioCkb = new QCheckBox(tr("keepAspectRatio"), q_ptr);
-        keepAspectRatioCkb->setChecked(true);
-
-        videoMinBitrateLineEdit = new QLineEdit(q_ptr);
-        videoMaxBitrateLineEdit = new QLineEdit(q_ptr);
-
-        startButton = new QToolButton(q_ptr);
-        startButton->setText(QObject::tr("Start"));
-        startButton->setMinimumSize(BUTTON_SIZE);
-        progressBar = new QProgressBar(q_ptr);
-        progressBar->setRange(0, 100);
-        fpsLabel = new QLabel(q_ptr);
-        fpsLabel->setToolTip(QObject::tr("Video Encoder FPS."));
-        fpsTimer = new QTimer(q_ptr);
-    }
+        outPutWidget = new OutPutWidget(q_ptr);
+        statusWidget = new StautusWidget(q_ptr);
 
-    [[nodiscard]] auto initVideoSetting() const -> QGroupBox *
-    {
-        auto *layout1 = new QHBoxLayout;
-        layout1->addWidget(new QLabel(tr("Width:"), q_ptr));
-        layout1->addWidget(widthLineEdit);
-        layout1->addWidget(new QLabel(tr("height:"), q_ptr));
-        layout1->addWidget(heightLineEdit);
-        layout1->addWidget(keepAspectRatioCkb);
-        auto *layout2 = new QHBoxLayout;
-        layout2->addWidget(new QLabel(tr("Min Bitrate:"), q_ptr));
-        layout2->addWidget(videoMinBitrateLineEdit);
-        layout2->addWidget(new QLabel(tr("Max Bitrate:"), q_ptr));
-        layout2->addWidget(videoMaxBitrateLineEdit);
-
-        auto *groupBox = new QGroupBox(tr("Video"), q_ptr);
-        auto *layout = new QVBoxLayout(groupBox);
-        layout->addLayout(layout1);
-        layout->addLayout(layout2);
-        return groupBox;
-    }
+        fpsTimer = new QTimer(q_ptr);
 
-    [[nodiscard]] auto invalidSetting() const -> QGroupBox *
-    {
-        auto *groupBox = new QGroupBox(tr("Invalid setting"), q_ptr);
-        auto *layout = new QHBoxLayout(groupBox);
-        layout->addWidget(new QLabel(tr("Quality:"), q_ptr));
-        layout->addWidget(quailtySbx);
-        layout->addWidget(new QLabel(tr("Crf:"), q_ptr));
-        layout->addWidget(crfSbx);
-        layout->addWidget(new QLabel(tr("Preset:"), q_ptr));
-        layout->addWidget(presetCbx);
-        layout->addWidget(new QLabel(tr("Tune:"), q_ptr));
-        layout->addWidget(tuneCbx);
-        layout->addWidget(new QLabel(tr("Profile:"), q_ptr));
-        layout->addWidget(profileCbx);
-        return groupBox;
+        subtitleTextEdit = new QTextEdit(q_ptr);
     }
 
     void initInputFileAttribute(const QString &filePath) const
@@ -176,14 +94,6 @@ class MainWindow::MainWindowPrivate
         sourceWidget->setDuration(mediaInfo.duration / 1000);
     }
 
-    void calBitrate() const
-    {
-        auto w = widthLineEdit->text().toInt();
-        auto h = heightLineEdit->text().toInt();
-        videoMinBitrateLineEdit->setText(QString::number(w * h));
-        videoMaxBitrateLineEdit->setText(QString::number(w * h * 4));
-    }
-
     MainWindow *q_ptr;
 
     Ffmpeg::Transcoder *transcoder;
@@ -191,29 +101,14 @@ class MainWindow::MainWindowPrivate
     SourceWidget *sourceWidget;
     QTabWidget *tabWidget;
     PreviewWidget *previewWidget;
+    VideoEncoderWidget *videoEncoderWidget;
+    AudioEncoderWidget *audioEncoderWidget;
+    OutPutWidget *outPutWidget;
+    StautusWidget *statusWidget;
 
-    QTextEdit *subtitleTextEdit;
-    QTextEdit *outTextEdit;
-
-    QComboBox *audioCodecCbx;
-    QComboBox *videoCodecCbx;
-    QSpinBox *quailtySbx;
-    QSpinBox *crfSbx;
-    QComboBox *presetCbx;
-    QComboBox *tuneCbx;
-    QComboBox *profileCbx;
-
-    QLineEdit *widthLineEdit;
-    QLineEdit *heightLineEdit;
-    QSize originalSize = QSize(-1, -1);
-    QCheckBox *keepAspectRatioCkb;
-    QLineEdit *videoMinBitrateLineEdit;
-    QLineEdit *videoMaxBitrateLineEdit;
-
-    QToolButton *startButton;
-    QProgressBar *progressBar;
-    QLabel *fpsLabel;
     QTimer *fpsTimer;
+
+    QTextEdit *subtitleTextEdit;
 };
 
 MainWindow::MainWindow(QWidget *parent)
@@ -228,12 +123,6 @@ MainWindow::MainWindow(QWidget *parent)
 
 MainWindow::~MainWindow() = default;
 
-void MainWindow::onVideoEncoderChanged()
-{
-    auto quantizer = Ffmpeg::getCodecQuantizer(d_ptr->videoCodecCbx->currentText());
-    d_ptr->quailtySbx->setRange(quantizer.first, quantizer.second);
-}
-
 void MainWindow::onOpenInputFile()
 {
     const auto path = QStandardPaths::standardLocations(QStandardPaths::MoviesLocation)
@@ -248,8 +137,8 @@ void MainWindow::onOpenInputFile()
     }
 
     d_ptr->sourceWidget->setSource(filePath);
-
     d_ptr->initInputFileAttribute(filePath);
+    d_ptr->outPutWidget->setOutputFileName(QFileInfo(filePath).fileName());
 }
 
 void MainWindow::onResetConfig()
@@ -286,49 +175,34 @@ void MainWindow::onOpenSubtitle()
     d_ptr->subtitleTextEdit->setPlainText(filePath);
 }
 
-void MainWindow::onOpenOutputFile()
-{
-    const QString path = QStandardPaths::standardLocations(QStandardPaths::MoviesLocation)
-                             .value(0, QDir::homePath());
-    const QString filePath
-        = QFileDialog::getSaveFileName(this,
-                                       tr("Save File"),
-                                       path,
-                                       tr("Audio Video (*.mp3 *.mp4 *.mkv *.rmvb)"));
-    if (filePath.isEmpty()) {
-        return;
-    }
-
-    d_ptr->outTextEdit->setPlainText(filePath);
-}
-
 void MainWindow::onStart()
 {
-    if (d_ptr->startButton->text() == tr("Start")) {
+    if (d_ptr->statusWidget->status() == tr("Start")) {
         auto inPath = d_ptr->sourceWidget->source();
         auto subtitlePath = d_ptr->subtitleTextEdit->toPlainText();
-        auto outPath = d_ptr->outTextEdit->toPlainText();
+        auto outPath = d_ptr->outPutWidget->outputFilePath();
         if (inPath.isEmpty() || outPath.isEmpty()) {
             return;
         }
 
         d_ptr->transcoder->setInFilePath(inPath);
         d_ptr->transcoder->setOutFilePath(outPath);
-        d_ptr->transcoder->setAudioEncodecName(d_ptr->audioCodecCbx->currentText());
-        d_ptr->transcoder->setVideoEncodecName(d_ptr->videoCodecCbx->currentText());
-        d_ptr->transcoder->setSize(
-            {d_ptr->widthLineEdit->text().toInt(), d_ptr->heightLineEdit->text().toInt()});
+        d_ptr->transcoder->setAudioEncodecName(d_ptr->audioEncoderWidget->encoder());
+        d_ptr->transcoder->setVideoEncodecName(d_ptr->videoEncoderWidget->encoder());
+        d_ptr->transcoder->setUseGpuDecode(d_ptr->videoEncoderWidget->gpuDecode());
+        d_ptr->transcoder->setUseGpuEncode(d_ptr->videoEncoderWidget->gpuEncode());
+        d_ptr->transcoder->setSize(d_ptr->videoEncoderWidget->videoSize());
         if (QFile::exists(subtitlePath)) {
             d_ptr->transcoder->setSubtitleFilename(subtitlePath);
         }
-        d_ptr->transcoder->setQuailty(d_ptr->quailtySbx->value());
-        d_ptr->transcoder->setMinBitrate(d_ptr->videoMinBitrateLineEdit->text().toInt());
-        d_ptr->transcoder->setMaxBitrate(d_ptr->videoMaxBitrateLineEdit->text().toInt());
-        d_ptr->transcoder->setCrf(d_ptr->crfSbx->value());
-        d_ptr->transcoder->setPreset(d_ptr->presetCbx->currentText());
-        d_ptr->transcoder->setProfile(d_ptr->profileCbx->currentText());
+        d_ptr->transcoder->setQuailty(d_ptr->videoEncoderWidget->quality());
+        d_ptr->transcoder->setMinBitrate(d_ptr->videoEncoderWidget->minBitrate());
+        d_ptr->transcoder->setMaxBitrate(d_ptr->videoEncoderWidget->maxBitrate());
+        d_ptr->transcoder->setCrf(d_ptr->videoEncoderWidget->crf());
+        d_ptr->transcoder->setPreset(d_ptr->videoEncoderWidget->preset());
+        d_ptr->transcoder->setProfile(d_ptr->videoEncoderWidget->profile());
         d_ptr->transcoder->startTranscode();
-        d_ptr->startButton->setText(tr("Stop"));
+        d_ptr->statusWidget->setStatus(tr("Stop"));
 
         auto filename = QFile::exists(inPath) ? QFileInfo(inPath).fileName()
                                               : QFileInfo(QUrl(inPath).toString()).fileName();
@@ -336,10 +210,10 @@ void MainWindow::onStart()
 
         d_ptr->fpsTimer->start(1000);
 
-    } else if (d_ptr->startButton->text() == tr("Stop")) {
+    } else if (d_ptr->statusWidget->status() == tr("Stop")) {
         d_ptr->transcoder->stopTranscode();
-        d_ptr->progressBar->setValue(0);
-        d_ptr->startButton->setText(tr("Start"));
+        d_ptr->statusWidget->setProgress(0);
+        d_ptr->statusWidget->setStatus(tr("Start"));
 
         d_ptr->fpsTimer->stop();
     }
@@ -358,8 +232,9 @@ void MainWindow::onProcessEvents()
         auto eventPtr = d_ptr->transcoder->takePropertyChangeEvent();
         switch (eventPtr->type()) {
         case Ffmpeg::PropertyChangeEvent::EventType::Position: {
-            // auto *positionEvent = dynamic_cast<Ffmpeg::PositionEvent *>(eventPtr.data());
-            // d_ptr->controlWidget->setPosition(positionEvent->position() / AV_TIME_BASE);
+            auto *positionEvent = dynamic_cast<Ffmpeg::PositionEvent *>(eventPtr.data());
+            d_ptr->statusWidget->setProgress(positionEvent->position() * 100.0
+                                             / d_ptr->transcoder->duration());
         } break;
         case Ffmpeg::PropertyChangeEvent::MediaTrack: {
             bool audioSet = false;
@@ -370,28 +245,17 @@ void MainWindow::onProcessEvents()
                 switch (track.mediaType) {
                 case AVMEDIA_TYPE_AUDIO:
                     if (!audioSet) {
-                        auto index = d_ptr->audioCodecCbx->findData(track.codecId);
-                        if (index > 0) {
-                            d_ptr->audioCodecCbx->setCurrentIndex(index);
+                        if (d_ptr->audioEncoderWidget->setEncoder(track.codecId)) {
                             audioSet = true;
                         }
                     }
                     break;
                 case AVMEDIA_TYPE_VIDEO:
                     if (!videoSet) {
-                        auto index = d_ptr->videoCodecCbx->findData(track.codecId);
-                        if (index > 0) {
-                            d_ptr->videoCodecCbx->setCurrentIndex(index);
+                        if (d_ptr->videoEncoderWidget->setEncoder(track.codecId)) {
+                            d_ptr->videoEncoderWidget->setVideoSize(track.size);
+                            videoSet = true;
                         }
-                        videoSet = true;
-                        d_ptr->widthLineEdit->blockSignals(true);
-                        d_ptr->heightLineEdit->blockSignals(true);
-                        d_ptr->widthLineEdit->setText(QString::number(track.size.width()));
-                        d_ptr->heightLineEdit->setText(QString::number(track.size.height()));
-                        d_ptr->originalSize = track.size;
-                        d_ptr->widthLineEdit->blockSignals(false);
-                        d_ptr->heightLineEdit->blockSignals(false);
-                        d_ptr->calBitrate();
                     }
                     break;
                 default: break;
@@ -424,54 +288,24 @@ void MainWindow::setupUI()
 
     auto *subtitleBtn = new QToolButton(this);
     subtitleBtn->setText(tr("Add Subtitle"));
-    subtitleBtn->setMinimumSize(BUTTON_SIZE);
     connect(subtitleBtn, &QToolButton::clicked, this, &MainWindow::onOpenSubtitle);
-    auto *outBtn = new QToolButton(this);
-    outBtn->setText(tr("Open Out"));
-    outBtn->setMinimumSize(BUTTON_SIZE);
-    connect(outBtn, &QToolButton::clicked, this, &MainWindow::onOpenOutputFile);
 
     auto *editLayout = new QGridLayout;
     editLayout->addWidget(d_ptr->subtitleTextEdit, 1, 0, 1, 1);
     editLayout->addWidget(subtitleBtn, 1, 1, 1, 1);
-    editLayout->addWidget(d_ptr->outTextEdit, 2, 0, 1, 1);
-    editLayout->addWidget(outBtn, 2, 1, 1, 1);
-
-    auto *groupLayout1 = new QHBoxLayout;
-    groupLayout1->addWidget(new QLabel(tr("Audio Codec Name:"), this));
-    groupLayout1->addWidget(d_ptr->audioCodecCbx);
-    groupLayout1->addWidget(new QLabel(tr("Video Codec Name:"), this));
-    groupLayout1->addWidget(d_ptr->videoCodecCbx);
-    auto *groupBox = new QGroupBox(tr("Encoder Settings"), this);
-    auto *groupLayout = new QVBoxLayout(groupBox);
-    groupLayout->addLayout(groupLayout1);
-    groupLayout->addWidget(d_ptr->invalidSetting());
-    groupLayout->addWidget(d_ptr->initVideoSetting());
-
-    auto *useGpuCheckBox = new QCheckBox(tr("GPU Decode"), this);
-    useGpuCheckBox->setToolTip(tr("GPU Decode"));
-    useGpuCheckBox->setChecked(true);
-    connect(useGpuCheckBox, &QCheckBox::clicked, this, [this, useGpuCheckBox] {
-        d_ptr->transcoder->setUseGpuDecode(useGpuCheckBox->isChecked());
-    });
-    d_ptr->transcoder->setUseGpuDecode(useGpuCheckBox->isChecked());
-    auto *displayLayout = new QHBoxLayout;
-    displayLayout->addWidget(d_ptr->startButton);
-    displayLayout->addWidget(useGpuCheckBox);
-    displayLayout->addWidget(d_ptr->progressBar);
-    displayLayout->addWidget(d_ptr->fpsLabel);
 
     auto *widget = new QWidget(this);
     auto *layout = new QVBoxLayout(widget);
     layout->addWidget(d_ptr->sourceWidget);
     layout->addWidget(d_ptr->tabWidget);
+    layout->addWidget(d_ptr->outPutWidget);
     setCentralWidget(widget);
 
+    statusBar()->addWidget(d_ptr->statusWidget);
+
     auto *tempWidget = new QWidget(this);
     auto *tempLayout = new QVBoxLayout(tempWidget);
     tempLayout->addLayout(editLayout);
-    tempLayout->addWidget(groupBox);
-    tempLayout->addLayout(displayLayout);
     d_ptr->tabWidget->addTab(tempWidget, tr("Temp Widget"));
 }
 
@@ -481,59 +315,16 @@ void MainWindow::buildConnect()
             &Ffmpeg::Transcoder::eventIncrease,
             this,
             &MainWindow::onProcessEvents);
-
-    connect(d_ptr->sourceWidget, &SourceWidget::showMediaInfo, this, &MainWindow::onShowMediaInfo);
-
-    connect(d_ptr->videoCodecCbx,
-            &QComboBox::currentTextChanged,
-            this,
-            &MainWindow::onVideoEncoderChanged);
-
-    connect(d_ptr->widthLineEdit, &QLineEdit::textChanged, this, [this](const QString &text) {
-        if (!d_ptr->keepAspectRatioCkb->isChecked() || !d_ptr->originalSize.isValid()) {
-            return;
-        }
-        auto multiple = d_ptr->originalSize.width() * 1.0 / text.toInt();
-        int height = d_ptr->originalSize.height() / multiple;
-        d_ptr->heightLineEdit->blockSignals(true);
-        d_ptr->heightLineEdit->setText(QString::number(height));
-        d_ptr->heightLineEdit->blockSignals(false);
-        d_ptr->calBitrate();
-    });
-    connect(d_ptr->heightLineEdit, &QLineEdit::textChanged, this, [this](const QString &text) {
-        if (!d_ptr->keepAspectRatioCkb->isChecked() || !d_ptr->originalSize.isValid()) {
-            return;
-        }
-        auto multiple = d_ptr->originalSize.height() * 1.0 / text.toInt();
-        int width = d_ptr->originalSize.width() / multiple;
-        d_ptr->widthLineEdit->blockSignals(true);
-        d_ptr->widthLineEdit->setText(QString::number(width));
-        d_ptr->widthLineEdit->blockSignals(false);
-        d_ptr->calBitrate();
-    });
-    connect(d_ptr->keepAspectRatioCkb, &QCheckBox::stateChanged, this, [this] {
-        if (!d_ptr->keepAspectRatioCkb->isChecked() || !d_ptr->originalSize.isValid()) {
-            return;
-        }
-        auto multiple = d_ptr->originalSize.width() * 1.0 / d_ptr->widthLineEdit->text().toInt();
-        int height = d_ptr->originalSize.height() / multiple;
-        d_ptr->heightLineEdit->blockSignals(true);
-        d_ptr->heightLineEdit->setText(QString::number(height));
-        d_ptr->heightLineEdit->blockSignals(false);
-        d_ptr->calBitrate();
-    });
-
-    connect(d_ptr->startButton, &QToolButton::clicked, this, &MainWindow::onStart);
-    connect(d_ptr->transcoder, &Ffmpeg::Transcoder::progressChanged, this, [this](qreal value) {
-        d_ptr->progressBar->setValue(value * 100);
-    });
     connect(d_ptr->transcoder, &Ffmpeg::Transcoder::finished, this, [this] {
-        if (d_ptr->startButton->text() == tr("Stop")) {
-            d_ptr->startButton->click();
+        if (d_ptr->statusWidget->status() == tr("Stop")) {
+            d_ptr->statusWidget->click();
         }
     });
+
+    connect(d_ptr->sourceWidget, &SourceWidget::showMediaInfo, this, &MainWindow::onShowMediaInfo);
+    connect(d_ptr->statusWidget, &StautusWidget::start, this, &MainWindow::onStart);
+
     connect(d_ptr->fpsTimer, &QTimer::timeout, this, [this] {
-        auto str = QString("FPS: %1").arg(QString::number(d_ptr->transcoder->fps(), 'f', 2));
-        d_ptr->fpsLabel->setText(str);
+        d_ptr->statusWidget->setFPS(d_ptr->transcoder->fps());
     });
 }
diff --git a/examples/transcoder/mainwindow.hpp b/examples/transcoder/mainwindow.hpp
index cefb2d9..d1b5d1f 100644
--- a/examples/transcoder/mainwindow.hpp
+++ b/examples/transcoder/mainwindow.hpp
@@ -15,11 +15,9 @@ class MainWindow : public QMainWindow
     ~MainWindow() override;
 
 private slots:
-    void onVideoEncoderChanged();
     void onOpenInputFile();
     void onResetConfig();
     void onOpenSubtitle();
-    void onOpenOutputFile();
     void onStart();
 
     void onShowMediaInfo();
diff --git a/examples/transcoder/outputwidget.cc b/examples/transcoder/outputwidget.cc
new file mode 100644
index 0000000..59dfd3e
--- /dev/null
+++ b/examples/transcoder/outputwidget.cc
@@ -0,0 +1,64 @@
+#include "outputwidget.hpp"
+
+#include <QtWidgets>
+
+class OutPutWidget::OutPutWidgetPrivate
+{
+public:
+    explicit OutPutWidgetPrivate(OutPutWidget *q)
+        : q_ptr(q)
+    {
+        outLineEdit = new QLineEdit(q_ptr);
+    }
+
+    OutPutWidget *q_ptr;
+
+    QLineEdit *outLineEdit;
+};
+
+OutPutWidget::OutPutWidget(QWidget *parent)
+    : QWidget{parent}
+    , d_ptr(new OutPutWidgetPrivate(this))
+{
+    setupUI();
+    buildConnect();
+}
+
+OutPutWidget::~OutPutWidget() {}
+
+void OutPutWidget::setOutputFileName(const QString &fileName)
+{
+    const auto path = QStandardPaths::standardLocations(QStandardPaths::MoviesLocation)
+                          .value(0, QDir::homePath());
+    d_ptr->outLineEdit->setText(QDir(path).filePath(fileName));
+}
+
+auto OutPutWidget::outputFilePath() const -> QString
+{
+    return d_ptr->outLineEdit->text().trimmed();
+}
+
+void OutPutWidget::onBrowse()
+{
+    const auto filePath = QFileDialog::getSaveFileName(this,
+                                                       tr("Save File"),
+                                                       d_ptr->outLineEdit->text().trimmed());
+    if (filePath.isEmpty()) {
+        return;
+    }
+    d_ptr->outLineEdit->setText(filePath);
+}
+
+void OutPutWidget::setupUI()
+{
+    auto *button = new QToolButton(this);
+    button->setText(tr("Browse"));
+    connect(button, &QToolButton::clicked, this, &OutPutWidget::onBrowse);
+
+    auto *layout = new QHBoxLayout(this);
+    layout->addWidget(new QLabel(tr("Save File:"), this));
+    layout->addWidget(d_ptr->outLineEdit);
+    layout->addWidget(button);
+}
+
+void OutPutWidget::buildConnect() {}
diff --git a/examples/transcoder/outputwidget.hpp b/examples/transcoder/outputwidget.hpp
new file mode 100644
index 0000000..cd86133
--- /dev/null
+++ b/examples/transcoder/outputwidget.hpp
@@ -0,0 +1,27 @@
+#ifndef OUTPUTWIDGET_HPP
+#define OUTPUTWIDGET_HPP
+
+#include <QWidget>
+
+class OutPutWidget : public QWidget
+{
+    Q_OBJECT
+public:
+    explicit OutPutWidget(QWidget *parent = nullptr);
+    ~OutPutWidget() override;
+
+    void setOutputFileName(const QString &fileName);
+    auto outputFilePath() const -> QString;
+
+private slots:
+    void onBrowse();
+
+private:
+    void setupUI();
+    void buildConnect();
+
+    class OutPutWidgetPrivate;
+    QScopedPointer<OutPutWidgetPrivate> d_ptr;
+};
+
+#endif // OUTPUTWIDGET_HPP
diff --git a/examples/transcoder/previewwidget.cc b/examples/transcoder/previewwidget.cc
index beb674d..f8c5d75 100644
--- a/examples/transcoder/previewwidget.cc
+++ b/examples/transcoder/previewwidget.cc
@@ -17,6 +17,7 @@ class PreviewWidget::PreviewWidgetPrivate
         renderPtr->widget()->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
         renderPtr->setBackgroundColor(Qt::white);
         infoLabel = new QLabel(q_ptr);
+        infoLabel->setAlignment(Qt::AlignCenter);
         leftButton = new QToolButton(q_ptr);
         leftButton->setMinimumSize(buttonSize);
         leftButton->setText("<");
diff --git a/examples/transcoder/sourcewidget.cc b/examples/transcoder/sourcewidget.cc
index a943991..a4368b0 100644
--- a/examples/transcoder/sourcewidget.cc
+++ b/examples/transcoder/sourcewidget.cc
@@ -8,7 +8,7 @@ class SourceWidget::SourceWidgetPrivate
     explicit SourceWidgetPrivate(SourceWidget *q)
         : q_ptr(q)
     {
-        inTextEdit = new QTextEdit(q_ptr);
+        inLineEdit = new QLineEdit(q_ptr);
         infoLabel = new QLabel(q_ptr);
         infoLabel->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
         startTimeEdit = new QTimeEdit(q_ptr);
@@ -20,7 +20,7 @@ class SourceWidget::SourceWidgetPrivate
 
     SourceWidget *q_ptr;
 
-    QTextEdit *inTextEdit;
+    QLineEdit *inLineEdit;
     QLabel *infoLabel;
     QTimeEdit *startTimeEdit;
     QTimeEdit *endTimeEdit;
@@ -35,16 +35,16 @@ SourceWidget::SourceWidget(QWidget *parent)
     buildConnect();
 }
 
-SourceWidget::~SourceWidget() {}
+SourceWidget::~SourceWidget() = default;
 
 void SourceWidget::setSource(const QString &source)
 {
-    d_ptr->inTextEdit->setPlainText(source);
+    d_ptr->inLineEdit->setText(source);
 }
 
 auto SourceWidget::source() const -> QString
 {
-    return d_ptr->inTextEdit->toPlainText();
+    return d_ptr->inLineEdit->text().trimmed();
 }
 
 void SourceWidget::setDuration(qint64 duration)
@@ -81,7 +81,7 @@ void SourceWidget::setupUI()
 
     auto *layout1 = new QHBoxLayout;
     layout1->addWidget(new QLabel(tr("Input File:"), this));
-    layout1->addWidget(d_ptr->inTextEdit);
+    layout1->addWidget(d_ptr->inLineEdit);
 
     auto *layout2 = new QHBoxLayout;
     layout2->addWidget(fileInfoButton);
diff --git a/examples/transcoder/stautuswidget.cc b/examples/transcoder/stautuswidget.cc
new file mode 100644
index 0000000..3a9fbfb
--- /dev/null
+++ b/examples/transcoder/stautuswidget.cc
@@ -0,0 +1,75 @@
+#include "stautuswidget.hpp"
+
+#include <QtWidgets>
+
+class StautusWidget::StautusWidgetPrivate
+{
+public:
+    explicit StautusWidgetPrivate(StautusWidget *q)
+        : q_ptr(q)
+    {
+        startButton = new QToolButton(q_ptr);
+        startButton->setText(QCoreApplication::translate("StautusWidgetPrivate", "Start"));
+        progressBar = new QProgressBar(q_ptr);
+        progressBar->setRange(0, 100);
+        fpsLabel = new QLabel(q_ptr);
+        fpsLabel->setToolTip(
+            QCoreApplication::translate("StautusWidgetPrivate", "Video Encoder FPS."));
+    }
+
+    StautusWidget *q_ptr = nullptr;
+
+    QToolButton *startButton;
+    QProgressBar *progressBar;
+    QLabel *fpsLabel;
+};
+
+StautusWidget::StautusWidget(QWidget *parent)
+    : QWidget{parent}
+    , d_ptr(new StautusWidgetPrivate(this))
+{
+    setupUI();
+    buildConnect();
+}
+
+StautusWidget::~StautusWidget() {}
+
+void StautusWidget::setStatus(const QString &status)
+{
+    d_ptr->startButton->setText(status);
+}
+
+QString StautusWidget::status() const
+{
+    return d_ptr->startButton->text();
+}
+
+void StautusWidget::setProgress(int progress)
+{
+    d_ptr->progressBar->setValue(progress);
+}
+
+void StautusWidget::setFPS(double fps)
+{
+    auto text = QString("FPS: %1").arg(QString::number(fps, 'f', 2));
+    d_ptr->fpsLabel->setText(text);
+    d_ptr->fpsLabel->setToolTip(text);
+}
+
+void StautusWidget::click()
+{
+    d_ptr->startButton->click();
+}
+
+void StautusWidget::setupUI()
+{
+    auto *layout = new QHBoxLayout(this);
+    layout->addWidget(d_ptr->startButton);
+    layout->addWidget(d_ptr->progressBar);
+    layout->addWidget(d_ptr->fpsLabel);
+}
+
+void StautusWidget::buildConnect()
+{
+    connect(d_ptr->startButton, &QToolButton::clicked, this, &StautusWidget::start);
+}
diff --git a/examples/transcoder/stautuswidget.hpp b/examples/transcoder/stautuswidget.hpp
new file mode 100644
index 0000000..3288531
--- /dev/null
+++ b/examples/transcoder/stautuswidget.hpp
@@ -0,0 +1,33 @@
+#ifndef STAUTUSWIDGET_HPP
+#define STAUTUSWIDGET_HPP
+
+#include <QWidget>
+
+class StautusWidget : public QWidget
+{
+    Q_OBJECT
+public:
+    explicit StautusWidget(QWidget *parent = nullptr);
+    ~StautusWidget() override;
+
+    void setStatus(const QString &status);
+    QString status() const;
+
+    void setProgress(int progress);
+
+    void setFPS(double fps);
+
+    void click();
+
+signals:
+    void start();
+
+private:
+    void setupUI();
+    void buildConnect();
+
+    class StautusWidgetPrivate;
+    QScopedPointer<StautusWidgetPrivate> d_ptr;
+};
+
+#endif // STAUTUSWIDGET_HPP
diff --git a/examples/transcoder/transcoder.pro b/examples/transcoder/transcoder.pro
index 38ee124..7956cba 100644
--- a/examples/transcoder/transcoder.pro
+++ b/examples/transcoder/transcoder.pro
@@ -4,7 +4,7 @@ QT       += core gui widgets network multimedia openglwidgets core5compat
 
 TEMPLATE = app
 
-TARGET = QFfmpegTranscoder
+TARGET = Transcoder
 
 LIBS += \
     -L$$APP_OUTPUT_PATH/../libs \
@@ -15,15 +15,23 @@ LIBS += \
 include(../../3rdparty/3rdparty.pri)
 
 SOURCES += \
+    audioencoderwidget.cc \
     main.cc \
     mainwindow.cc \
+    outputwidget.cc \
     previewwidget.cc \
-    sourcewidget.cc
+    sourcewidget.cc \
+    stautuswidget.cc \
+    videoencoderwidget.cc
 
 HEADERS += \
+    audioencoderwidget.hpp \
     mainwindow.hpp \
+    outputwidget.hpp \
     previewwidget.hpp \
-    sourcewidget.hpp
+    sourcewidget.hpp \
+    stautuswidget.hpp \
+    videoencoderwidget.hpp
 
 DESTDIR = $$APP_OUTPUT_PATH
 
diff --git a/examples/transcoder/videoencoderwidget.cc b/examples/transcoder/videoencoderwidget.cc
new file mode 100644
index 0000000..fb46794
--- /dev/null
+++ b/examples/transcoder/videoencoderwidget.cc
@@ -0,0 +1,293 @@
+#include "videoencoderwidget.hpp"
+
+#include <ffmpeg/ffmpegutils.hpp>
+
+#include <QtWidgets>
+
+class VideoEncoderWidget::VideoEncoderWidgetPrivate
+{
+public:
+    explicit VideoEncoderWidgetPrivate(VideoEncoderWidget *q)
+        : q_ptr(q)
+    {
+        const auto *const comboBoxStyleSheet{"QComboBox {combobox-popup:0;}"};
+        videoEncoderCbx = new QComboBox(q_ptr);
+        videoEncoderCbx->setView(new QListView(videoEncoderCbx));
+        videoEncoderCbx->setMaxVisibleItems(10);
+        videoEncoderCbx->setStyleSheet(comboBoxStyleSheet);
+        auto videoCodecs = Ffmpeg::getCurrentSupportCodecs(AVMEDIA_TYPE_VIDEO, true);
+        for (auto iter = videoCodecs.cbegin(); iter != videoCodecs.cend(); ++iter) {
+            videoEncoderCbx->addItem(iter.value(), iter.key());
+        }
+        videoEncoderCbx->setCurrentIndex(videoEncoderCbx->findData(AV_CODEC_ID_H264));
+        videoEncoderCbx->model()->sort(0);
+
+        gpuEncodeCbx = new QCheckBox(QCoreApplication::translate("VideoEncoderWidgetPrivate",
+                                                                 "Use GPU Encode"),
+                                     q_ptr);
+        gpuEncodeCbx->setChecked(true);
+        gpuDecodeCbx = new QCheckBox(QCoreApplication::translate("VideoEncoderWidgetPrivate",
+                                                                 "Use GPU Decode"),
+                                     q_ptr);
+        gpuDecodeCbx->setChecked(true);
+
+        quailtySbx = new QSpinBox(q_ptr);
+        quailtySbx->setRange(2, 31);
+        quailtySbx->setToolTip(
+            QCoreApplication::translate("VideoEncoderWidgetPrivate", "smaller -> better"));
+        crfSbx = new QSpinBox(q_ptr);
+        crfSbx->setRange(0, 51);
+        crfSbx->setToolTip(
+            QCoreApplication::translate("VideoEncoderWidgetPrivate", "smaller -> better"));
+        crfSbx->setValue(18);
+        presetCbx = new QComboBox(q_ptr);
+        presetCbx->setView(new QListView(presetCbx));
+        tuneCbx = new QComboBox(q_ptr);
+        tuneCbx->setView(new QListView(tuneCbx));
+        profileCbx = new QComboBox(q_ptr);
+        profileCbx->setView(new QListView(profileCbx));
+
+        widthSbx = new QSpinBox(q_ptr);
+        widthSbx->setRange(0, INT_MAX);
+        heightSbx = new QSpinBox(q_ptr);
+        heightSbx->setRange(0, INT_MAX);
+        aspectCheckBox = new QCheckBox(QCoreApplication::translate("VideoEncoderWidgetPrivate",
+                                                                   "Keep aspect ratio:"),
+                                       q_ptr);
+        aspectCheckBox->setChecked(true);
+
+        minBitrateSbx = new QSpinBox(q_ptr);
+        minBitrateSbx->setRange(0, INT_MAX);
+        maxBitrateSbx = new QSpinBox(q_ptr);
+        maxBitrateSbx->setRange(0, INT_MAX);
+    }
+
+    void calBitrate() const
+    {
+        auto w = widthSbx->value();
+        auto h = heightSbx->value();
+        minBitrateSbx->setValue(w * h);
+        maxBitrateSbx->setValue(w * h * 4);
+    }
+
+    VideoEncoderWidget *q_ptr;
+
+    QComboBox *videoEncoderCbx;
+    QCheckBox *gpuEncodeCbx;
+    QCheckBox *gpuDecodeCbx;
+
+    QSpinBox *quailtySbx;
+    QSpinBox *crfSbx;
+    QComboBox *presetCbx;
+    QComboBox *tuneCbx;
+    QComboBox *profileCbx;
+
+    QSpinBox *widthSbx;
+    QSpinBox *heightSbx;
+    QCheckBox *aspectCheckBox;
+
+    QSpinBox *minBitrateSbx;
+    QSpinBox *maxBitrateSbx;
+
+    QSize originalSize;
+};
+
+VideoEncoderWidget::VideoEncoderWidget(QWidget *parent)
+    : QWidget{parent}
+    , d_ptr(new VideoEncoderWidgetPrivate(this))
+{
+    setupUI();
+    buildConnect();
+}
+
+VideoEncoderWidget::~VideoEncoderWidget() = default;
+
+auto VideoEncoderWidget::setEncoder(AVCodecID codecId) -> bool
+{
+    auto index = d_ptr->videoEncoderCbx->findData(codecId);
+    auto finded = (index >= 0);
+    if (finded) {
+        d_ptr->videoEncoderCbx->setCurrentIndex(index);
+    }
+    return finded;
+}
+
+auto VideoEncoderWidget::encoder() const -> QString
+{
+    return d_ptr->videoEncoderCbx->currentText();
+}
+
+void VideoEncoderWidget::setPreset(const QStringList &presets, const QString &current)
+{
+    d_ptr->presetCbx->clear();
+    d_ptr->presetCbx->addItems(presets);
+    d_ptr->presetCbx->setCurrentText(current);
+}
+
+auto VideoEncoderWidget::preset() const -> QString
+{
+    return d_ptr->presetCbx->currentText();
+}
+
+void VideoEncoderWidget::setTune(const QStringList &tunes, const QString &current)
+{
+    d_ptr->tuneCbx->clear();
+    d_ptr->tuneCbx->addItems(tunes);
+    d_ptr->tuneCbx->setCurrentText(current);
+}
+
+auto VideoEncoderWidget::tune() const -> QString
+{
+    return d_ptr->tuneCbx->currentText();
+}
+
+void VideoEncoderWidget::setProfile(const QStringList &profiles, const QString &current)
+{
+    d_ptr->profileCbx->clear();
+    d_ptr->profileCbx->addItems(profiles);
+    d_ptr->profileCbx->setCurrentText(current);
+}
+
+auto VideoEncoderWidget::profile() const -> QString
+{
+    return d_ptr->profileCbx->currentText();
+}
+
+void VideoEncoderWidget::setVideoSize(const QSize &size)
+{
+    d_ptr->widthSbx->blockSignals(true);
+    d_ptr->heightSbx->blockSignals(true);
+    d_ptr->widthSbx->setValue(size.width());
+    d_ptr->heightSbx->setValue(size.height());
+    d_ptr->widthSbx->blockSignals(false);
+    d_ptr->heightSbx->blockSignals(false);
+
+    d_ptr->originalSize = size;
+    d_ptr->calBitrate();
+}
+
+auto VideoEncoderWidget::videoSize() const -> QSize
+{
+    return {d_ptr->widthSbx->value(), d_ptr->heightSbx->value()};
+}
+
+auto VideoEncoderWidget::quality() const -> int
+{
+    return d_ptr->quailtySbx->value();
+}
+
+auto VideoEncoderWidget::minBitrate() const -> int
+{
+    return d_ptr->minBitrateSbx->value();
+}
+
+auto VideoEncoderWidget::gpuEncode() const -> bool
+{
+    return d_ptr->gpuEncodeCbx->isChecked();
+}
+
+auto VideoEncoderWidget::gpuDecode() const -> bool
+{
+    return d_ptr->gpuDecodeCbx->isChecked();
+}
+
+auto VideoEncoderWidget::maxBitrate() const -> int
+{
+    return d_ptr->maxBitrateSbx->value();
+}
+
+auto VideoEncoderWidget::crf() const -> int
+{
+    return d_ptr->crfSbx->value();
+}
+
+void VideoEncoderWidget::onEncoderChanged()
+{
+    auto quantizer = Ffmpeg::getCodecQuantizer(d_ptr->videoEncoderCbx->currentText());
+    if (quantizer.first < 0 || quantizer.second < 0) {
+        return;
+    }
+    d_ptr->quailtySbx->setRange(quantizer.first, quantizer.second);
+}
+
+void VideoEncoderWidget::onVideoWidthChanged()
+{
+    if (!d_ptr->aspectCheckBox->isChecked() || !d_ptr->originalSize.isValid()) {
+        return;
+    }
+    auto multiple = d_ptr->originalSize.width() * 1.0 / d_ptr->widthSbx->value();
+    int height = d_ptr->originalSize.height() / multiple;
+    d_ptr->heightSbx->blockSignals(true);
+    d_ptr->heightSbx->setValue(height);
+    d_ptr->heightSbx->blockSignals(false);
+    d_ptr->calBitrate();
+}
+
+void VideoEncoderWidget::onVideoHeightChanged()
+{
+    if (!d_ptr->aspectCheckBox->isChecked() || !d_ptr->originalSize.isValid()) {
+        return;
+    }
+    auto multiple = d_ptr->originalSize.height() * 1.0 / d_ptr->heightSbx->value();
+    int width = d_ptr->originalSize.width() / multiple;
+    d_ptr->widthSbx->blockSignals(true);
+    d_ptr->widthSbx->setValue(width);
+    d_ptr->widthSbx->blockSignals(false);
+    d_ptr->calBitrate();
+}
+
+void VideoEncoderWidget::setupUI()
+{
+    auto *codecLayout = new QHBoxLayout;
+    codecLayout->setSpacing(20);
+    codecLayout->addWidget(new QLabel(tr("Encoder:"), this));
+    codecLayout->addWidget(d_ptr->videoEncoderCbx);
+    codecLayout->addStretch();
+    codecLayout->addWidget(d_ptr->gpuEncodeCbx);
+    codecLayout->addWidget(d_ptr->gpuDecodeCbx);
+
+    auto *invailedGroupBox = new QGroupBox(tr("Invalid setting"), this);
+    auto *invailedLayout = new QFormLayout(invailedGroupBox);
+    invailedLayout->addRow(tr("Quality:"), d_ptr->quailtySbx);
+    invailedLayout->addRow(tr("Crf:"), d_ptr->crfSbx);
+    invailedLayout->addRow(tr("Preset:"), d_ptr->presetCbx);
+    invailedLayout->addRow(tr("Tune:"), d_ptr->tuneCbx);
+    invailedLayout->addRow(tr("Profile:"), d_ptr->profileCbx);
+
+    auto *sizeGroupBox = new QGroupBox(tr("Size"), this);
+    auto *sizeLayout = new QFormLayout(sizeGroupBox);
+    sizeLayout->addRow(tr("Width:"), d_ptr->widthSbx);
+    sizeLayout->addRow(tr("Height:"), d_ptr->heightSbx);
+    sizeLayout->addRow(d_ptr->aspectCheckBox);
+
+    auto *bitrateGroupBox = new QGroupBox(tr("Bitrate"), this);
+    auto *bitrateLayout = new QFormLayout(bitrateGroupBox);
+    bitrateLayout->addRow(tr("Min Bitrate:"), d_ptr->minBitrateSbx);
+    bitrateLayout->addRow(tr("Max Bitrate:"), d_ptr->maxBitrateSbx);
+
+    auto *layout = new QGridLayout(this);
+    layout->addLayout(codecLayout, 0, 0, 1, 2);
+    layout->addWidget(invailedGroupBox, 1, 0, 2, 1);
+    layout->addWidget(sizeGroupBox, 1, 1, 1, 1);
+    layout->addWidget(bitrateGroupBox, 2, 1, 1, 1);
+}
+
+void VideoEncoderWidget::buildConnect()
+{
+    connect(d_ptr->videoEncoderCbx,
+            &QComboBox::currentTextChanged,
+            this,
+            &VideoEncoderWidget::onEncoderChanged);
+    connect(d_ptr->widthSbx,
+            &QSpinBox::valueChanged,
+            this,
+            &VideoEncoderWidget::onVideoWidthChanged);
+    connect(d_ptr->heightSbx,
+            &QSpinBox::valueChanged,
+            this,
+            &VideoEncoderWidget::onVideoHeightChanged);
+    connect(d_ptr->aspectCheckBox,
+            &QCheckBox::stateChanged,
+            this,
+            &VideoEncoderWidget::onVideoWidthChanged);
+}
diff --git a/examples/transcoder/videoencoderwidget.hpp b/examples/transcoder/videoencoderwidget.hpp
new file mode 100644
index 0000000..9ad128b
--- /dev/null
+++ b/examples/transcoder/videoencoderwidget.hpp
@@ -0,0 +1,54 @@
+#ifndef VIDEOENCODERWIDGET_HPP
+#define VIDEOENCODERWIDGET_HPP
+
+#include <QWidget>
+
+extern "C" {
+#include <libavcodec/codec_id.h>
+}
+
+class VideoEncoderWidget : public QWidget
+{
+    Q_OBJECT
+public:
+    explicit VideoEncoderWidget(QWidget *parent = nullptr);
+    ~VideoEncoderWidget() override;
+
+    auto setEncoder(AVCodecID codecId) -> bool;
+    [[nodiscard]] auto encoder() const -> QString;
+
+    void setPreset(const QStringList &presets, const QString &current);
+    [[nodiscard]] auto preset() const -> QString;
+
+    void setTune(const QStringList &tunes, const QString &current);
+    [[nodiscard]] auto tune() const -> QString;
+
+    void setProfile(const QStringList &profiles, const QString &current);
+    [[nodiscard]] auto profile() const -> QString;
+
+    void setVideoSize(const QSize &size);
+    [[nodiscard]] auto videoSize() const -> QSize;
+
+    [[nodiscard]] auto quality() const -> int;
+    [[nodiscard]] auto crf() const -> int;
+
+    [[nodiscard]] auto minBitrate() const -> int;
+    [[nodiscard]] auto maxBitrate() const -> int;
+
+    [[nodiscard]] auto gpuEncode() const -> bool;
+    [[nodiscard]] auto gpuDecode() const -> bool;
+
+private slots:
+    void onEncoderChanged();
+    void onVideoWidthChanged();
+    void onVideoHeightChanged();
+
+private:
+    void setupUI();
+    void buildConnect();
+
+    class VideoEncoderWidgetPrivate;
+    QScopedPointer<VideoEncoderWidgetPrivate> d_ptr;
+};
+
+#endif // VIDEOENCODERWIDGET_HPP
diff --git a/ffmpeg/codeccontext.cpp b/ffmpeg/codeccontext.cpp
index 8dfc963..f741515 100644
--- a/ffmpeg/codeccontext.cpp
+++ b/ffmpeg/codeccontext.cpp
@@ -72,6 +72,7 @@ CodecContext::CodecContext(const AVCodec *codec, QObject *parent)
     : QObject(parent)
     , d_ptr(new CodecContextPrivate(this))
 {
+    qInfo() << "AVCodec:" << codec->long_name;
     d_ptr->codecCtx = avcodec_alloc_context3(codec);
     d_ptr->init();
     Q_ASSERT(d_ptr->codecCtx != nullptr);
@@ -263,7 +264,7 @@ void CodecContext::setCrf(int crf)
 {
     // 设置crf参数，范围是0-51，0是无损，23是默认值，51是最差质量
     Q_ASSERT(crf >= 0 && crf <= 51);
-    av_opt_set(d_ptr->codecCtx->priv_data, "crf", QString::number(crf).toLocal8Bit().constData(), 0);
+    av_opt_set_double(d_ptr->codecCtx->priv_data, "crf", crf, 0);
 }
 
 void CodecContext::setPreset(const QString &preset)
@@ -291,6 +292,7 @@ auto CodecContext::open() -> bool
 auto CodecContext::sendPacket(Packet *packet) -> bool
 {
     int ret = avcodec_send_packet(d_ptr->codecCtx, packet->avPacket());
+    AVERROR(EINVAL);
     ERROR_RETURN(ret)
 }
 
diff --git a/ffmpeg/ffmpegutils.cc b/ffmpeg/ffmpegutils.cc
index fc3fc01..ccc43a0 100644
--- a/ffmpeg/ffmpegutils.cc
+++ b/ffmpeg/ffmpegutils.cc
@@ -151,10 +151,10 @@ auto compareAVRational(const AVRational &a, const AVRational &b) -> bool
     return a.den == b.den && a.num == b.num;
 }
 
-auto getCodecQuantizer(const QString &codecname) -> QPair<int, int>
+auto getCodecQuantizer(const QString &codecName) -> QPair<int, int>
 {
     QScopedPointer<AVContextInfo> contextInfoPtr(new AVContextInfo);
-    if (!contextInfoPtr->initEncoder(codecname)) {
+    if (!contextInfoPtr->initEncoder(codecName)) {
         return {-1, -1};
     }
     auto quantizer = contextInfoPtr->codecCtx()->quantizer();
diff --git a/ffmpeg/transcoder.cc b/ffmpeg/transcoder.cc
index 622b08e..002a7ec 100644
--- a/ffmpeg/transcoder.cc
+++ b/ffmpeg/transcoder.cc
@@ -164,7 +164,8 @@ class Transcoder::TranscoderPrivate
                     != 0) {
                     avCodecCtx->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
                 }
-                contextInfoPtr->openCodec(AVContextInfo::GpuEncode);
+                contextInfoPtr->openCodec(useGpuEncode ? AVContextInfo::GpuEncode
+                                                       : AVContextInfo::NotUseGpu);
                 auto ret = avcodec_parameters_from_context(stream->codecpar,
                                                            contextInfoPtr->codecCtx()->avCodecCtx());
                 if (ret < 0) {
@@ -388,7 +389,7 @@ class Transcoder::TranscoderPrivate
     void loop()
     {
         auto duration = inFormatContext->duration();
-        while (runing) {
+        while (runing.load()) {
             PacketPtr packetPtr(new Packet);
             if (!inFormatContext->readFrame(packetPtr.get())) {
                 break;
@@ -413,7 +414,7 @@ class Transcoder::TranscoderPrivate
 
                 calculatePts(packetPtr.data(),
                              transcodeContexts.at(stream_index)->decContextInfoPtr.data());
-                emit q_ptr->progressChanged(packetPtr->pts() / duration);
+                addPropertyChangeEvent(new PositionEvent(packetPtr->pts()));
                 if (transcodeCtx->decContextInfoPtr->mediaType() == AVMEDIA_TYPE_VIDEO) {
                     fpsPtr->update();
                 }
@@ -512,6 +513,7 @@ class Transcoder::TranscoderPrivate
     QString profile = "main";
 
     bool useGpuDecode = false;
+    bool useGpuEncode = false;
 
     std::atomic_bool runing = true;
     QScopedPointer<Utils::Fps> fpsPtr;
@@ -536,9 +538,14 @@ Transcoder::~Transcoder()
     stopTranscode();
 }
 
-void Transcoder::setUseGpuDecode(bool useGpu)
+void Transcoder::setUseGpuDecode(bool use)
+{
+    d_ptr->useGpuDecode = use;
+}
+
+void Transcoder::setUseGpuEncode(bool use)
 {
-    d_ptr->useGpuDecode = useGpu;
+    d_ptr->useGpuEncode = use;
 }
 
 void Transcoder::setInFilePath(const QString &filePath)
diff --git a/ffmpeg/transcoder.hpp b/ffmpeg/transcoder.hpp
index 5e57f8d..556529b 100644
--- a/ffmpeg/transcoder.hpp
+++ b/ffmpeg/transcoder.hpp
@@ -22,7 +22,8 @@ class FFMPEG_EXPORT Transcoder : public QThread
     explicit Transcoder(QObject *parent = nullptr);
     ~Transcoder() override;
 
-    void setUseGpuDecode(bool useGpu);
+    void setUseGpuDecode(bool use);
+    void setUseGpuEncode(bool use);
 
     void setInFilePath(const QString &filePath);
     auto parseInputFile() -> bool;
@@ -71,7 +72,6 @@ class FFMPEG_EXPORT Transcoder : public QThread
     auto takePropertyChangeEvent() -> PropertyChangeEventPtr;
 
 signals:
-    void progressChanged(qreal); // 0.XXXX
     void eventIncrease();
 
 protected: