网站搭建用什么软件,高品质的网站设计制作,高端网站定制的案例,具体阐述对网站如何加强建设Qt ffmpeg音视频转换工具#xff0c;QProcess方式调用ffmpeg#xff0c;对音视频文件进行格式转换#xff0c;支持常见的音视频格式#xff0c;主要在于QProcess的输出处理以及转换的文件名和后缀的处理#xff0c;可以进一步加上音视频剪切合并和音视频文件属性查询修改的…Qt ffmpeg音视频转换工具QProcess方式调用ffmpeg对音视频文件进行格式转换支持常见的音视频格式主要在于QProcess的输出处理以及转换的文件名和后缀的处理可以进一步加上音视频剪切合并和音视频文件属性查询修改的功能。 #include mainwindow.h
#include ui_mainwindow.h
#include QDebug
#include QTextCodec
#include QFileDialog
#include QMessageBoxMainWindow::MainWindow(QWidget *parent) :QMainWindow(parent),ui(new Ui::MainWindow)
{ui-setupUi(this);QFont font;font.setPixelSize(16);setFont(font);setWindowTitle(QStringLiteral(ffmpeg工具));ui-listWidget-setMaximumWidth(200);connect(ui-listWidget, SIGNAL(clicked(QModelIndex)), this, SLOT(convert()));ui-checkBox-setChecked(true);mProcess new QProcess;connect(mProcess, SIGNAL(readyReadStandardError()), this, SLOT(readError()));connect(mProcess, SIGNAL(readyReadStandardOutput()), this, SLOT(readOutput()));connect(mProcess, SIGNAL(finished(int,QProcess::ExitStatus)), this, SLOT(finished(int,QProcess::ExitStatus)));mTimer new QTimer(this);connect(mTimer, SIGNAL(timeout()), this, SLOT(updateTimer()));mTimer-start(1000);initListWidget();
}MainWindow::~MainWindow()
{delete ui;
}void MainWindow::readError()
{QString str mProcess-readAllStandardError().data();if (str \r){ui-textBrowser-append(mTmpStr);mTmpStr.clear();}else{mTmpStr str;if (str.contains(\r\n)){ui-textBrowser-append(mTmpStr);mTmpStr.clear();}}
}void MainWindow::readOutput()
{QByteArray qba mProcess-readAllStandardOutput();QTextCodec* tc QTextCodec::codecForName(System);QString str tc-toUnicode(qba);if (str \r){ui-textBrowser-append(mTmpStr);mTmpStr.clear();}else{mTmpStr str;if (str.contains(\r\n)){ui-textBrowser-append(mTmpStr);mTmpStr.clear();}}
}void MainWindow::finished(int exitCode, QProcess::ExitStatus exitStatus)
{ui-textBrowser-append(QStringLiteral(finished : %1 %2).arg(exitCode).arg(exitStatus));mProcess-close();if (exitCode 0 exitStatus 0){informationMessageBox(QStringLiteral(提示), QStringLiteral(%1\n转换\n%2\n完成).arg(mSourceFile).arg(mTargetFile));}else{informationMessageBox(QStringLiteral(提示), QStringLiteral(%1\n转换\n%2\n失败).arg(mSourceFile).arg(mTargetFile));}
}void MainWindow::updateTimer()
{if (!mTmpStr.isEmpty()){ui-textBrowser-append(mTmpStr);mTmpStr.clear();}
}void MainWindow::initListWidget()
{QStringList nameLst;nameLst.append(QStringLiteral(FLAC转MP3)); // ffmpeg -i input.flac -ab 320k -map_metadata 0 -id3v2_version 3 output.mp3nameLst.append(QStringLiteral(M4A转MP3)); // ffmpeg -i 1.m4a -acodec libmp3lame -aq 0 123.mp3nameLst.append(QStringLiteral(WAV转MP3)); // ffmpeg -i input.wav -f mp3 -acodec libmp3lame -aq 0 output.mp3nameLst.append(QStringLiteral(APE转MP3)); // ffmpeg -i 1.ape -acodec libmp3lame -aq 0 123.mp3nameLst.append();nameLst.append(QStringLiteral(MP4转M4A)); // ffmpeg -i test.mp4 -acodec copy -vn 123.m4anameLst.append(QStringLiteral(MP4转AAC)); // ffmpeg -i test.mp4 -acodec copy -vn 123.aacnameLst.append(QStringLiteral(MP4转MP3)); // ffmpeg -i test.mp4 -acodec libmp3lame -aq 0 123.mp3nameLst.append();nameLst.append(QStringLiteral(MP3转OGG)); // ffmpeg -i bb.mp3 -acodec libvorbis -ab 128k bb.oggnameLst.append(QStringLiteral(MP3转WAV)); // ffmpeg -i input.mp3 -f wav output.wavQMapQString, QString cmdMap;cmdMap.insert(QStringLiteral(FLAC转MP3), QStringLiteral(ffmpeg -i \%1\ -ab 320k -map_metadata 0 -id3v2_version 3 -aq 0 \%2\));cmdMap.insert(QStringLiteral(M4A转MP3), QStringLiteral(ffmpeg -i \%1\ -acodec libmp3lame -aq 0 \%2\));cmdMap.insert(QStringLiteral(WAV转MP3), QStringLiteral(ffmpeg -i \%1\ -f mp3 -acodec libmp3lame -aq 0 \%2\));cmdMap.insert(QStringLiteral(APE转MP3), QStringLiteral(ffmpeg -i \%1\ -acodec libmp3lame -aq 0 \%2\));cmdMap.insert(QStringLiteral(MP4转M4A), QStringLiteral(ffmpeg -i \%1\ -acodec copy -vn \%2\));cmdMap.insert(QStringLiteral(MP4转AAC), QStringLiteral(ffmpeg -i \%1\ -acodec copy -vn \%2\));cmdMap.insert(QStringLiteral(MP4转MP3), QStringLiteral(ffmpeg -i \%1\ -acodec libmp3lame -aq 0 \%2\));cmdMap.insert(QStringLiteral(MP3转OGG), QStringLiteral(ffmpeg -i \%1\ -acodec libvorbis -ab 128k \%2\));cmdMap.insert(QStringLiteral(MP3转WAV), QStringLiteral(ffmpeg -i \%1\ -f wav \%2\));foreach (QString name, nameLst){QListWidgetItem *item new QListWidgetItem;if (!name.isEmpty()){item-setText(name);item-setData(Qt::UserRole, cmdMap.value(name));}else{item-setText();item-setData(Qt::UserRole, );}ui-listWidget-addItem(item);}
}QString MainWindow::getFileSuffix(QString file)
{QString ret;if (file FLAC){ret QStringLiteral(flac);}else if (file MP3){ret QStringLiteral(mp3);}else if (file M4A){ret QStringLiteral(m4a);}else if (file WAV){ret QStringLiteral(wav);}else if (file APE){ret QStringLiteral(ape);}else if (file AAC){ret QStringLiteral(aac);}else if (file MP4){ret QStringLiteral(mp4);}else if (file OGG){ret QStringLiteral(ogg);}return ret;
}void MainWindow::convert()
{QListWidgetItem *item ui-listWidget-currentItem();QString tmp item-data(Qt::UserRole).toString();if (mProcess-isOpen()){mProcess-close();}mSourceFile.clear();mTargetFile.clear();mSource.clear();mTarget.clear();mSourceSuffix.clear();mTargetSuffix.clear();if (!tmp.isEmpty()){mTitle item-text();mCmd tmp;setWindowTitle(QStringLiteral(ffmpeg工具 - %1).arg(mTitle));}else{mTitle.clear();mCmd.clear();setWindowTitle(QStringLiteral(ffmpeg工具));}
}bool MainWindow::informationMessageBox(const QString title, const QString text, bool isOnlyOk)
{QMessageBox msgBox(this);msgBox.setFont(this-font());msgBox.setIcon(QMessageBox::Information);msgBox.setWindowTitle(title);msgBox.setText(text);if (isOnlyOk){msgBox.setStandardButtons(QMessageBox::Ok);msgBox.setButtonText(QMessageBox::Ok, QStringLiteral(确定));}else{msgBox.setStandardButtons(QMessageBox::Ok | QMessageBox::Cancel);msgBox.setButtonText(QMessageBox::Ok, QStringLiteral(确定));msgBox.setButtonText(QMessageBox::Cancel, QStringLiteral(取消));}return (msgBox.exec() QMessageBox::Ok);
}void MainWindow::closeEvent(QCloseEvent *event)
{if (informationMessageBox(QStringLiteral(提示), QStringLiteral(确定关闭), false)){event-accept();}else{event-ignore();}
}void MainWindow::on_pushButton_import_clicked()
{if (mTitle.isEmpty() || mCmd.isEmpty()){return;}mSource mTitle.split(QStringLiteral(转))[0];mTarget mTitle.split(QStringLiteral(转))[1];mSourceSuffix getFileSuffix(mSource);mTargetSuffix getFileSuffix(mTarget);if (mSourceSuffix.isEmpty() || mTargetSuffix.isEmpty()){informationMessageBox(QStringLiteral(提示), QStringLiteral(不支持的文件格式));return;}QString file QFileDialog::getOpenFileName(this, QStringLiteral(打开%1文件).arg(mSource), QStringLiteral(.), QStringLiteral(%1文件(*.%2)).arg(mSource).arg(mSourceSuffix));if (!file.isEmpty()){mSourceFile file;if (ui-checkBox-isChecked()){QString tmp mSourceFile;mTargetFile tmp.replace(QStringLiteral(.%1).arg(mSourceSuffix), QStringLiteral(.%1).arg(mTargetSuffix));}}
}void MainWindow::on_pushButton_save_clicked()
{if (mSourceFile.isEmpty()){return;}QString file QFileDialog::getSaveFileName(this, QStringLiteral(保存%1文件).arg(mTarget), mTargetFile, QStringLiteral(%1文件(*.%2)).arg(mTarget).arg(mTargetSuffix));if (!file.isEmpty()){mTargetFile file;}
}void MainWindow::on_pushButton_convert_clicked()
{if (mSourceFile.isEmpty() || mTargetFile.isEmpty()){return;}QString cmd mCmd.arg(mSourceFile).arg(mTargetFile);ui-textBrowser-append(\n cmd \n);if (mProcess-isOpen()){mProcess-close();}mTmpStr.clear();mProcess-start(cmd);
}
