QTAV source package compilation
download source code
Download dependent libraries (with ffmepg and other content in it)
https://sourceforge.net/projects/qtav/files/depends/QtAV-depends-windows-x86+x64.7z/download
Download the source package
https://github.com/wang-bin/QtAV
- update submodule
cd QtAV && git submodule update --init
Decompress the QTAV source code and dependent libraries in the same root directory, otherwise the content of .qmake.conf may need to be changed later .
Configuration Environment
Copy the lib\x64, bin\x64, and include files of the dependent library to the Qt installation directory (Qt\5.15.2\msvc2019_64).
Open the .qmake.conf file
add two lines
INCLUDEPATH += $$PWD/../QtAV-depends-windows-x86+x64/include
#这里我们要注意 如果我们编译器是64位的 填以下路径
#LIBS += -L$$PWD/../QtAV-depends-windows-x86+x64/lib/x64
#这里我们要注意 如果我们编译器是32位的 填以下路径
LIBS += -L$$PWD/../QtAV-depends-windows-x86+x64/lib
Construct
Ah, open QtAV.pro, and then build, I chose the release version. You will encounter an error in the middle: XXX is the usage in C++17. I chose to include it in the pro file CONFIG += C++17. Then the construction is completed, and then the qml project in the examples can be run normally. lib_win_x86_64The .lib and .dll library files inside are the compiled QTAV third-party libraries we need. Refer to [Qt open source audio and video framework module QtAV] 01: Introduction, compilation and simple use.
install qtav
Find sdk_install.bat under the compilation directory of QTAV and click Install, then it is installed.
Using QTAV in QML
Qt may not recognize qtav in QML, so it can be added in the pro file QML_IMPORT_PATH += [QtAVSourceCodeDir]/qml. Refer to Use QtAV In Your Projects .
- test.pro
QT += qml quick
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
CONFIG += c++17
# You can make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0
SOURCES += \
main.cpp
HEADERS +=
FORMS +=
# Default rules for deployment.
qnx: target.path = /tmp/$${
TARGET}/bin
else: unix:!android: target.path = /opt/$${
TARGET}/bin
!isEmpty(target.path): INSTALLS += target
RESOURCES += \
qrc.qrc
QML_IMPORT_PATH += [QtAVSourceCodeDir]/qml
- main.cpp
#include<QQmlEngine>
#include<QQmlContext>
#include<QQmlApplicationEngine>
#include<QApplication>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
QQmlApplicationEngine engine;
engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
if (engine.rootObjects().isEmpty())
return -1;
return a.exec();
}
- main.qml
import QtQuick 2.9
import QtQuick.Window 2.2
import QtAV 1.6
Window {
visible: true
width: 640
height: 480
title: qsTr("Hello World")
Video {
id: video
anchors.fill: parent
source: "D://test.mp4"
}
MouseArea {
anchors.fill: parent
onClicked: video.play()
}
}
Push and pull streams using vlc media player
Download VLC media player
Go to the official website to download
push stream
Menu -> Media -> Stream. Click Add, add an MP4 video, click Stream.
Click Next
to select RTSP, click Add,
the port defaults, and the path can be entered by yourself.
This can be kept as the default
Click Stream
Don't close this window at this time!
open in qml
- main.qml
import QtQuick 2.9
import QtQuick.Window 2.2
import QtAV 1.6
//修改后
Window {
visible: true
width: 640
height: 480
title: qsTr("Hello World")
Video {
id: video
anchors.fill: parent //跟随父节点大小 全屏
source:"rtsp://127.0.0.1:port//xxx"
}
MouseArea {
anchors.fill: parent
onClicked: video.play()
}
}
Then the video can be played, but sometimes it is stuck, sometimes the screen is black, and sometimes the picture is very unclear, which may be a network problem. This issue remains to be resolved.
Use vlc for camera capture, RTSP streaming, playback
At present, this problem has not been studied. You can first refer to using vlc for camera capture, RTSP streaming, and playback .