当前位置：首页 > news >正文

QtAV for ubuntu16.04

news 2025/8/19 6:06:03

下载ubuntu
https://releases.ubuntu.com/16.04/ubuntu-16.04.7-desktop-amd64.iso

下载ffmpeg
https://ffmpeg.org/download.html

下载QtAV
https://github.com/wang-bin/QtAV/releases

更新
sudo apt update

安装库
sudo apt-get install libglu1-mesa-dev freeglut3-dev mesa-common-dev

sudo apt-get install libavutil-dev libavcodec-dev libavformat-dev libswscale-dev

sudo apt-get install libopenal-dev libpulse-dev libva-dev libxv-dev libass-dev libegl1-mesa-dev

编译ffmpeg
./configure --enable-shared --disable-yasm --prefix=/usr/local/ffmpeg
make
sudo make install

ffmepg可不编译

安装qt4
sudo apt install qt4-default

编译QtAV
cd QtAV-1.12.0
mkdir build
cd build
qmake ..
make

用例

untitled1.pro

QT       += core guigreaterThan(QT_MAJOR_VERSION, 4): QT += widgetsTARGET = untitled1
TEMPLATE = appSOURCES += main.cpp\playerwindow.cppHEADERS  += playerwindow.hINCLUDEPATH += $$PWD/includeLIBS += -L$$PWD/lib_linux_x86_64/ -Wl,-rpath=$$PWD/lib_linux_x86_64/ -lQtAV -lQtAVWidgets

playerwindow.h

#ifndef PLAYERWINDOW_H
#define PLAYERWINDOW_H#include <QWidget>
#include <QtAV/VideoOutput.h>
#include <QtAV/AVPlayer.h>QT_BEGIN_NAMESPACE
class QSlider;
class QPushButton;
QT_END_NAMESPACE
class PlayerWindow : public QWidget
{Q_OBJECT
public:explicit PlayerWindow(QWidget *parent = 0);
public Q_SLOTS:void openMedia();void seekBySlider(int value);void seekBySlider();void playPause();
private Q_SLOTS:void updateSlider(qint64 value);void updateSlider();void updateSliderUnit();private:QtAV::VideoOutput *m_vo;QtAV::AVPlayer *m_player;QSlider *m_slider;QPushButton *m_openBtn;QPushButton *m_playBtn;QPushButton *m_stopBtn;int m_unit;
};#endif // PLAYERWINDOW_H

playerwindow.cpp

#include "playerwindow.h"
#include <QPushButton>
#include <QSlider>
#include <QLayout>
#include <QMessageBox>
#include <QFileDialog>using namespace QtAV;PlayerWindow::PlayerWindow(QWidget *parent) : QWidget(parent)
{m_unit = 1000;setWindowTitle(QString::fromLatin1("QtAV simple player example"));m_player = new AVPlayer(this);QVBoxLayout *vl = new QVBoxLayout();setLayout(vl);m_vo = new VideoOutput(this);if (!m_vo->widget()) {QMessageBox::warning(0, QString::fromLatin1("QtAV error"), tr("Can not create video renderer"));return;}m_player->setRenderer(m_vo);vl->addWidget(m_vo->widget());m_slider = new QSlider();m_slider->setOrientation(Qt::Horizontal);connect(m_slider, SIGNAL(sliderMoved(int)), SLOT(seekBySlider(int)));connect(m_slider, SIGNAL(sliderPressed()), SLOT(seekBySlider()));connect(m_player, SIGNAL(positionChanged(qint64)), SLOT(updateSlider(qint64)));connect(m_player, SIGNAL(started()), SLOT(updateSlider()));connect(m_player, SIGNAL(notifyIntervalChanged()), SLOT(updateSliderUnit()));vl->addWidget(m_slider);QHBoxLayout *hb = new QHBoxLayout();vl->addLayout(hb);m_openBtn = new QPushButton(tr("Open"));m_playBtn = new QPushButton(tr("Play/Pause"));m_stopBtn = new QPushButton(tr("Stop"));hb->addWidget(m_openBtn);hb->addWidget(m_playBtn);hb->addWidget(m_stopBtn);connect(m_openBtn, SIGNAL(clicked()), SLOT(openMedia()));connect(m_playBtn, SIGNAL(clicked()), SLOT(playPause()));connect(m_stopBtn, SIGNAL(clicked()), m_player, SLOT(stop()));
}void PlayerWindow::openMedia()
{QString file = QFileDialog::getOpenFileName(0, tr("Open a video"));if (file.isEmpty())return;m_player->play(file);
}void PlayerWindow::seekBySlider(int value)
{if (!m_player->isPlaying())return;m_player->seek(qint64(value*m_unit));
}void PlayerWindow::seekBySlider()
{seekBySlider(m_slider->value());
}void PlayerWindow::playPause()
{if (!m_player->isPlaying()) {m_player->play();return;}m_player->pause(!m_player->isPaused());
}void PlayerWindow::updateSlider(qint64 value)
{m_slider->setRange(0, int(m_player->duration()/m_unit));m_slider->setValue(int(value/m_unit));
}void PlayerWindow::updateSlider()
{updateSlider(m_player->position());
}void PlayerWindow::updateSliderUnit()
{m_unit = m_player->notifyInterval();updateSlider();
}

main.cpp

#include <QApplication>
#include "playerwindow.h"
#include <QtAVWidgets/global.h>int main(int argc, char *argv[])
{QtAV::Widgets::registerRenderers();QApplication a(argc, argv);PlayerWindow player;player.show();player.resize(800, 600);return a.exec();
}