英文:
defaultServiceProvider::requestService(): no service found for - "org.qt-project.qt.mediaplayer"
问题
我正在将我的Qt应用程序构建为Ubuntu-22.04上的AppImage。它构建没有错误，并且应用程序可以正常工作。但问题是它应该显示一个视频，但实际上没有显示。初始版本的应用程序可以成功显示视频，但新版本却不能。然而，当我在Qt Creator中以调试模式运行应用程序时，视频可以正常工作。
错误信息是："defaultServiceProvider::requestService(): no service found for - "org.qt-project.qt.mediaplayer"。
我知道论坛上有很多关于这个错误的主题，但我尝试了所有的方法。
我安装了所有推荐的库：
sudo apt-get update
sudo apt-get -y install \
libclang-dev \
libdbus-1-dev \
libfontconfig1-dev \
libfreetype6-dev \
libgl1-mesa-dev \
libharfbuzz-dev \
libx11-dev \
libx11-xcb-dev \
libxcb-glx0-dev \
libxcb-icccm4-dev \
libxcb-image0-dev \
libxcb-keysyms1-dev \
libxcb-randr0-dev \
libxcb-render-util0-dev \
libxcb-shape0-dev \
libxcb-shm0-dev \
libxcb-sync0-dev \
libxcb-xfixes0-dev \
libxcb-xinerama0-dev \
libxcb1-dev \
libxext-dev \
libxfixes-dev \
libxi-dev \
libxkbcommon-dev \
libxkbcommon-x11-dev \
libxrender-dev \
libpulse-dev \
libunwind-dev \
libgstreamer1.0-dev \
libgstreamer-plugins-base1.0-dev \
libgstreamer-plugins-bad1.0-dev \
gstreamer1.0-plugins-base \
gstreamer1.0-plugins-good \
gstreamer1.0-plugins-bad \
gstreamer1.0-plugins-ugly \
gstreamer1.0-gl \
gstreamer1.0-libav \
gstreamer1.0-qt5 \
gstreamer1.0-tools \
libqt5multimedia5-plugins \
libqt5core5a \
libfuse2 \
ffmpeg \
ffmpegthumbnailer \
autoconf \
automake \
build-essential \
cmake \
git-core \
libass-dev \
libgnutls28-dev \
libmp3lame-dev \
libsdl2-dev \
libtool \
libva-dev \
libvdpau-dev \
libvorbis-dev \
meson \
ninja-build \
pkg-config \
texinfo \
yasm \
zlib1g-dev \
ffmpegthumbs \
ffmpeg-doc \
qtbase5-dev \
qtdeclarative5-dev \
libavcodec-dev \
qml-module-qtmultimedia \
qml-module-qt-labs-settings \
qml-module-qtquick-controls2 \
qml-module-qtquick-layouts \
qml-module-qtquick-window2 \
qml-module-qtquick-dialogs \
qml-module-qtquick-controls \
binutils \
fuse \
libglib2.0-0
我甚至使用aqt安装了带有qtmultimedia的Qt：
aqt install-qt --outputdir ./Qt linux desktop 5.15.2 --archives qtmultimedia
如果有人能够提供解决此问题的说明，我将非常感激。
英文:
I'm building my Qt app into an AppImage on Ubuntu-22.04. It builds without errors and the app works. But the problem is that it's supposed to display a video, and it doesn't. The initial version of the app successfully displays the video, but the new version does not. However, the video works correctly when I run the app from Qt Creator in Debug mode.
The error message is:"defaultServiceProvider::requestService(): no service found for - "org.qt-project.qt.mediaplayer"".
I know there are multiple topics about this error across the forums, but i tried everything.
I installed all the libs that were recommended:
sudo apt-get update
sudo apt-get -y install \
libclang-dev \
libdbus-1-dev \
libfontconfig1-dev \
libfreetype6-dev \
libgl1-mesa-dev \
libharfbuzz-dev \
libx11-dev \
libx11-xcb-dev \
libxcb-glx0-dev \
libxcb-icccm4-dev \
libxcb-image0-dev \
libxcb-keysyms1-dev \
libxcb-randr0-dev \
libxcb-render-util0-dev \
libxcb-shape0-dev \
libxcb-shm0-dev \
libxcb-sync0-dev \
libxcb-xfixes0-dev \
libxcb-xinerama0-dev \
libxcb1-dev \
libxext-dev \
libxfixes-dev \
libxi-dev \
libxkbcommon-dev \
libxkbcommon-x11-dev \
libxrender-dev \
libpulse-dev \
libunwind-dev \
libgstreamer1.0-dev \
libgstreamer-plugins-base1.0-dev \
libgstreamer-plugins-bad1.0-dev \
gstreamer1.0-plugins-base \
gstreamer1.0-plugins-good \
gstreamer1.0-plugins-bad \
gstreamer1.0-plugins-ugly \
gstreamer1.0-gl \
gstreamer1.0-libav \
gstreamer1.0-qt5 \
gstreamer1.0-tools \
libqt5multimedia5-plugins \
libqt5core5a \
libfuse2 \
ffmpeg \
ffmpegthumbnailer \
autoconf \
automake \
build-essential \
cmake \
git-core \
libass-dev \
libgnutls28-dev \
libmp3lame-dev \
libsdl2-dev \
libtool \
libva-dev \
libvdpau-dev \
libvorbis-dev \
meson \
ninja-build \
pkg-config \
texinfo \
yasm \
zlib1g-dev \
ffmpegthumbs \
ffmpeg-doc \
qtbase5-dev \
qtdeclarative5-dev \
libavcodec-dev \
qml-module-qtmultimedia \
qml-module-qt-labs-settings \
qml-module-qtquick-controls2 \
qml-module-qtquick-layouts \
qml-module-qtquick-window2 \
qml-module-qtquick-dialogs \
qml-module-qtquick-controls \
binutils \
fuse \
libglib2.0-0
I even installed Qt with qtmultimedia with aqt:
aqt install-qt --outputdir ./Qt linux desktop 5.15.2 --archives qtmultimedia
If someone could provide me with instructions for resolving this issue, I would greatly appreciate it.
答案1
得分: 0
我刚刚不得不将Qt mediaservice文件夹及其插件添加到我的构建插件目录中，然后它就可以工作了。
英文:
UPDATE:
I just had to add the Qt mediaservice folder with its plugins into my build's plugins directory and it worked.
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