How to install submodule Qtmultimedia on Fedora?

SGaist

The idea is that you look for the multimedia library and the plugins. The former should be something like libQt5Multimedia.so and you should have a subfolder named multimedia in the plugins folder.

Note that if you do not have the GStreamer development libraries installed, you won't have much in the multimedia part.

Did you do that from a clean state ?

nrml

@SGaist

Now Qt folder has multimedia and the install done:

$git clone https://code.qt.io/cgit/qt/qtmultimedia.git
$cd qtmultimedia/
$git checkout 5.15.2
$git submodule update --init --recursive
$cd ../qt_build
$qmake ../qtmultimedia/qtmultimedia.pro --
$make -j4
$make install

No error happened but still error: Qtmultimedia/QMediaPlayer: No such file or directory occured.

Note that if you do not have the GStreamer development libraries installed, you won't have much in the multimedia part.

No, I haven't installed GStreamer development yet...

nrml

@SGaist

Did you do that from a clean state ?

No, the Qt folder was not cleaned. Should I re install Qt creator and clone https://code.qt.io/cgit/qt/qtmultimedia.git?

JoeCFD

After installation, you will be able to find this.
5.15.2/gcc_64/include/QtMultimedia
In the .pro file, add multimedia
QT += core gui widgets xml multimedia

nrml

@JoeCFD

Hello,

After installation, you will be able to find this.
5.15.2/gcc_64/include/QtMultimedia

Yes, I can find it.

I uninstalled Qt creator and reinstalled it. Then I did:

$git clone https://code.qt.io/cgit/qt/qtmultimedia.git
$cd qtmultimedia/
$git checkout 5.15.2
$git submodule update --init --recursive
$cd ../qt_build
$qmake ../qtmultimedia/qtmultimedia.pro --
$make -j4
$make install

No error has come. I wrote

QT += core gui widgets xml multimedia

in .pro file and #include <Qtmultimedia/QMediaPlayer> into mainwindow.h file.
But IDE says "Qtmultimedia/QMediaPlayer not found" and "You need to set an executable in the custom run configuration".

What am I missing?

SGaist

It's QtMultimedia.

However, the use of the module prefix recommandation has been dropped since Qt 5.0 if not before.

JoeCFD

This post is deleted!

nrml

@SGaist
Hello,

I changed Qtmultimedia to QtMultimedia but it cannot find the file...

JoeCFD

@nrml said in How to install submodule Qtmultimedia on Fedora?:

QtMultimedia

type:
locate QtMultimedia

to show what you see
I have:
/opt/thirdParties/Qt/5.15.2/gcc_64/include/QtMultimedia/5.15.2/QtMultimedia/

JoeCFD

@nrml When Qt is installed, there is an option to select multimedia for installation. It is not necessary to install it separately. But now you know how to install a component which may be required in Qt6

nrml

@JoeCFD

QT += core gui widgets xml multimedia

If I add widgets xml to QT +=, at #include<QMainWindwow> and some others, errors as "Lexical or preprocessor issue" and "Parse issue" happen...

type:
locate QtMultimedia

Okay, this is a result:

/opt/Webex/qml/QtMultimedia
/opt/Webex/qml/QtMultimedia/libdeclarative_multimedia.so
/opt/Webex/qml/QtMultimedia/qmldir
/var/lib/flatpak/runtime/org.fedoraproject.Platform/x86_64/f34/ca7d2818b9f0f5fb411ff4ac4a7c6bf3e0b404aa3623d674b547245c0902f10a/files/lib64/qt5/qml/QtMultimedia
/var/lib/flatpak/runtime/org.fedoraproject.Platform/x86_64/f34/ca7d2818b9f0f5fb411ff4ac4a7c6bf3e0b404aa3623d674b547245c0902f10a/files/lib64/qt5/qml/QtMultimedia/Video.qml
/var/lib/flatpak/runtime/org.fedoraproject.Platform/x86_64/f34/ca7d2818b9f0f5fb411ff4ac4a7c6bf3e0b404aa3623d674b547245c0902f10a/files/lib64/qt5/qml/QtMultimedia/libdeclarative_multimedia.so
/var/lib/flatpak/runtime/org.fedoraproject.Platform/x86_64/f34/ca7d2818b9f0f5fb411ff4ac4a7c6bf3e0b404aa3623d674b547245c0902f10a/files/lib64/qt5/qml/QtMultimedia/plugins.qmltypes
/var/lib/flatpak/runtime/org.fedoraproject.Platform/x86_64/f34/ca7d2818b9f0f5fb411ff4ac4a7c6bf3e0b404aa3623d674b547245c0902f10a/files/lib64/qt5/qml/QtMultimedia/qmldir

When Qt is installed, there is an option to select multimedia for installation.

I used an installer which is from Open Source Qt Use but there was no option to multimedia. There, however, is an option to "Additional libraries->Qt->Active Qt, Qt 3D, Qt Charts and so forth" in Maintain Qt.

JoeCFD

@nrml download qt-unified-linux-x64-4.0.1-online.run from https://download.qt.io/official_releases/online_installers/
use the latest one. Remove the old installation and try the new one. Install it in a location which can be found easily.
Usually /opt is the right choice.

nrml

@JoeCFD

Thank you for the link. I downloaded qt-unified-linux-x86_64-4.1.1-online.run and tried to run but there is no option to select multimedia in Select Components. I looked for it in Additional libraries, which has

italicised text
list item"Active Qt",
list item" Qt 3D" and so on,

and Qt versions. Qt 6.1.0 has

list item"Desktop gcc 64-bit",
list item"Android",
list item"Sources"....

Also Qt 5.15.2 has some components like them. Is the multimedia included one of them?

JoeCFD

@nrml this is the latest 6.0.4. Click Archives and select 5.15.2 may be 4

SGaist

QtMultimedia is not an optional package, it's part of the standard installation with Qt 5. For Qt 6, it shall be back for 6.2.

If it's not there with 5.15.2, then try either with 5.15.1 or if you have a commercial license a later version.

nrml

@JoeCFD

There is no Qt Multimedia package in both 5.15.2 and 5.15.1...

SGaist

@nrml Because, as I wrote, it is part of the standard set of installed modules.

nrml

@SGaist

Okay... so if I install Qt, it should be installed as default?
Hmm... then why cannot my qt creator find the file?

Path problem? I am installing qt in /opt directory and try run the code again once it done.

nrml

Once done installing Qt into /opt directory and git clone and qmake , make install and so forth, but it still says Unknown module(s) in QT: multimedia...

What can I do anything else?

JoeCFD

@nrml It is unnecessary to do git clone anymore after installation. Next step is to add qt bin and lib path in the shell.

add the similar stuff somewhere in .bashrc
export QT_DIR=/opt/thirdParties/Qt/5.15.2/gcc_64
export PATH=$QT_DIR/bin:$PATH
export LD_LIBRARY_PATH=$QT_DIR/lib:$LD_LIBRARY_PATH

open another tab and launch your qtcreator.