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QML视频不播放任何文件(avi、mp4、mov…)[重复]

qtmultimedia qml qt

bardao · 技术社区 · 7 年前

我在Ubuntu 16.04上使用官方的Qt 5.6 SDK,当我尝试播放mp3文件时,我得到:

defaultServiceProvider::requestService(): no service found for - "org.qt-project.qt.mediaplayer"

mMediaPlayer->setMedia(QUrl::fromLocalFile(myMp3File));
mMediaPlayer->play();

这在Android上运行,在我的ubuntu14.04机器上也运行过。我错过了什么?默认情况下,所有必需的gstreamer(通过文档)内容似乎都已安装,但仍然无法正常工作:

$ dpkg -l | grep gstream
ii  gir1.2-gstreamer-1.0                                 1.8.2-1~ubuntu1                                             amd64        GObject introspection data for the GStreamer library
ii  gstreamer1.0-alsa:amd64                              1.8.2-1ubuntu0.1                                            amd64        GStreamer plugin for ALSA
ii  gstreamer1.0-clutter-3.0                             3.0.18-1                                                    amd64        Clutter PLugin for GStreamer 1.0
ii  gstreamer1.0-fluendo-mp3:amd64                       0.10.32.debian-1                                            amd64        Fluendo mp3 decoder GStreamer 1.0 plugin
ii  gstreamer1.0-libav:amd64                             1.8.2-1~ubuntu1                                             amd64        libav plugin for GStreamer
ii  gstreamer1.0-plugins-bad:amd64                       1.8.2-1ubuntu0.1                                            amd64        GStreamer plugins from the "bad" set
ii  gstreamer1.0-plugins-bad-faad:amd64                  1.8.2-1ubuntu0.1                                            amd64        GStreamer faad plugin from the "bad" set
ii  gstreamer1.0-plugins-bad-videoparsers:amd64          1.8.2-1ubuntu0.1                                            amd64        GStreamer videoparsers plugin from the "bad" set
ii  gstreamer1.0-plugins-base:amd64                      1.8.2-1ubuntu0.1                                            amd64        GStreamer plugins from the "base" set
ii  gstreamer1.0-plugins-base-apps                       1.8.2-1ubuntu0.1                                            amd64        GStreamer helper programs from the "base" set
ii  gstreamer1.0-plugins-good:amd64                      1.8.2-1ubuntu0.1                                            amd64        GStreamer plugins from the "good" set
ii  gstreamer1.0-plugins-ugly:amd64                      1.8.2-1ubuntu0.1                                            amd64        GStreamer plugins from the "ugly" set
ii  gstreamer1.0-plugins-ugly-amr:amd64                  1.8.2-1ubuntu0.1                                            amd64        GStreamer plugins from the "ugly" set
ii  gstreamer1.0-pulseaudio:amd64                        1.8.2-1ubuntu0.1                                            amd64        GStreamer plugin for PulseAudio
ii  gstreamer1.0-tools                                   1.8.2-1~ubuntu1                                             amd64        Tools for use with GStreamer
ii  gstreamer1.0-x:amd64                                 1.8.2-1ubuntu0.1                                            amd64        GStreamer plugins for X11 and Pango
ii  libgstreamer-plugins-bad1.0-0:amd64                  1.8.2-1ubuntu0.1                                            amd64        GStreamer development files for libraries from the "bad" set
ii  libgstreamer-plugins-base1.0-0:amd64                 1.8.2-1ubuntu0.1                                            amd64        GStreamer libraries from the "base" set
ii  libgstreamer-plugins-good1.0-0:amd64                 1.8.2-1ubuntu0.1                                            amd64        GStreamer development files for libraries from the "good" set
ii  libgstreamer1.0-0:amd64                              1.8.2-1~ubuntu1                                             amd64        Core GStreamer libraries and elements
ii  libreoffice-avmedia-backend-gstreamer                1:5.1.4-0ubuntu1                                            amd64        GStreamer backend for LibreOffice

0 回复 | 直到 9 年前

grubshka 9 年前

首先,使用QT\u DEBUG\u PLUGINS=1运行应用程序以查看插件错误。

如果您看到关于“libgstaudio-0.10.so.0”的错误,那就是GStreamer版本的问题。官方的Qt二进制文件似乎需要gstreamer0.10。

我发现的解决方案:

使用发行版附带的libqt,使用包管理器:这是我找到的最好的解决方案,因为它是用正确的GStreamer版本构建的。我使用不同的chroot为嵌入不同GStreamer版本的发行版制作包。
Compile Qt from source to enable Gstreamer 1.0 :未测试