QtAV for ubuntu16.04-Toy模板网

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下载ubuntu

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

下载ffmpeg

https://ffmpeg.org/download.html

ffmpeg-6.0.tar.xz

下载QtAV

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

QtAV-1.12.0.zip

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 gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = untitled1
TEMPLATE = app


SOURCES += main.cpp\
    playerwindow.cpp

HEADERS  += playerwindow.h


INCLUDEPATH += $$PWD/include

LIBS += -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();
}

QtAV for ubuntu16.04,qt

关于demo也可以用example目录里的，这里不用QtCreator，而是直接在终端里编译；

mkdir build && cd build && qmake ../player.pro即可

首次编译会失败，生成lib_linux_文件夹，将QtAV的库拷贝到lib_linux_文件夹内

然后正常编译即可

安装显卡

ubuntu16.04安装nvidia驱动_氺月洞天的博客-CSDN博客

硬解码

按下图，用QtAV自带的Player打开视频，手动选中解码为CUDA是没办法启用硬解码的

QtAV for ubuntu16.04,qt

可以通过命令启动

./Player -vd "cuda;vaapi;vda;dxva;cedarv;ffmpeg" -f rtsp://admin:xx@xx

QtAV for ubuntu16.04,qt

命令行说明

命令行

player [-ao null] [-vo qt|gl|d2d|gdi|xv] [-vd "dxva[;cuda[;vaapi[;vda[;ffmpeg]]]]"] [--ffmpeg-log] [-f url|path|pipe:]

关闭音频 -ao null
选择渲染引擎用 -vo 选项。选项值可为qt, gl(默认), d2d, gdi, xv
选择解码器使用 -vd选项。可以是 dxva, cuda, vaapi, ffmpeg, 多个解码器用 ; 分隔表示解码器优先级。比如:
player -vd "dxva;cuda;ffmpeg" filename
表示优先使用dxva解码，若无法解码则选择cuda硬解，再不行则使用ffmpeg软解。
快捷键
双击: 全屏切换
Ctrl+O: 打开文件
空格: 暂停/播放
A: 切换比例
F: fullscreen on/off
T: 窗口置顶切换
N: 播放下一帧并暂停。按空格恢复持续播放
O: OSD
P: 重放
Q/ESC: 退出
S: 停止
R: 旋转90度
M: 切换静音
Up / Down: 音量 + / -
Ctrl+Up/Down: 速度 + / -
-> / <-: 前进/后退
Ctrl+滚轮: 缩放画面
可以拖动文件到播放器显示区进行播放
更多信息请看wiki: https://github.com/wang-bin/QtAV/wiki/_pages

linux下项目打包

参考：使用linuxdeployqt在linux下进行Qt打包发布(超详细)_百里杨的博客-CSDN博客

下载地址

Releases · probonopd/linuxdeployqt · GitHub

QtAV for ubuntu16.04,qt

修改名称

mv linuxdeployqt-6-x86_64.AppImage linuxdeployqt

添加可执行权限

sudo chmod 777 linuxdeployqt

移到/usr/local/bin目录

sudo mv linuxdeployqt /usr/local/bin

测试是否安装成功

linuxdeployqt --version

cz@ubuntu:~/图片/QtAV-1.12.0/examples/player/out/bin$ linuxdeployqt --version
linuxdeployqt (commit 8428c59), build 47 built on 2023-04-23 17:29:33 UTC
cz@ubuntu:~/图片/QtAV-1.12.0/examples/player/out/bin$

QtAV项目Player的项目树状结构如下：

.
├── lib
│   ├── libcommon.a
│   ├── libcommon.prl
│   ├── libQtAV.prl
│   ├── libQtAV.so
│   ├── libQtAV.so.1
│   ├── libQtAV.so.1.12
│   ├── libQtAV.so.1.12.0
│   ├── libQtAVWidgets.prl
│   ├── libQtAVWidgets.so
│   ├── libQtAVWidgets.so.1
│   ├── libQtAVWidgets.so.1.12
│   └── libQtAVWidgets.so.1.12.0
└── Player

执行命令

linuxdeployqt Player -appimage

linuxdeployqt (commit 8428c59), build 47 built on 2023-04-23 17:29:33 UTC
Not using FHS-like mode
app-binary: "/home/cz/视频/build/Player"
appDirPath: "/home/cz/视频/build"
relativeBinPath: "Player"
ERROR: Desktop file missing, creating a default one (you will probably want to edit it)
ERROR: Icon file missing, creating a default one (you will probably want to edit it)
qmakePath 3= ""
appimagetool, continuous build (commit 8bbf694), build <local dev build> built on 2020-12-31 11:48:33 UTC
Desktop file: /home/cz/视频/build/default.desktop
Categories entry not found in desktop file
.desktop file is missing a Categories= key

得到新的目录如下

QtAV for ubuntu16.04,qt

将lib和Player打包拷贝到另一个机器上

报错如下

relocation error: /libgcrypt.so.20: symbol gpgrt get syscall clamp, version GPG ERROR 1. not defined in file libgpg-error.so.o with link time reference

删除lib/libgcrypt.so.20后正常运行