How to install QMultimedia on ubuntu - qt

Question

I have a c++ project in which I want to use QMediaPlayer, but when I include it its give me error saying
fatal error: QMediaPlayer: No such file or directory
5 | #include <QMediaPlayer>
| ^~~~~~~~~~~~~~
I have the Qt package in my home directory('~/Qt') it is 6.1.2 version, I checked its include and wasn't able to find QtMultimedia.
I tried to install QtMultimedia with sudo apt-get install qtmultimedia5-dev after the installation was complete, still I wasn't able to find QMultimedia in ~/Qt/6.1.2/gcc_64/include/
I have tried this module "QtMultimedia" is not installed
Even though this I edited my CMakeLists.txt to find it
find_package(QT NAMES Qt6 Qt5 COMPONENTS
Core
Gui
Multimedia
Widgets
Concurrent
Network
REQUIRED
)
find_package(Qt${QT_VERSION_MAJOR} COMPONENTS
Core
Gui
Widgets
Multimedia
Concurrent
Network
REQUIRED
)
when rebuilding it with cmake --build . it gave me the same error ie
fatal error: QMediaPlayer: No such file or directory
5 | #include <QMediaPlayer>
| ^~~~~~~~~~~~~~
compilation terminated.
So instead of including it this time I directly used it but it still gave me error
‘QMediaPlayer’ does not name a type
20 | QMediaPlayer player;
| ^~~~~~~~~~~~
I am on ubuntu 20.04