unable to install QTSamplePlayer

[ShuaiZhao]

The following give me errors:
jack@jack-1204:~$ sudo apt-get install qtmultimedia5-dev qtbase5-dev libqt5widgets5 libqt5core5 libqt5gui5 libqt5multimedia5 libqt5multimediawidgets5 libqt5opengl5 libav-tools libavcodec-dev libavdevice-dev libavfilter-dev libavformat-dev libavutil-dev libpostproc-dev libswscale-dev
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package qtmultimedia5-dev
E: Unable to locate package qtbase5-dev
E: Unable to locate package libqt5widgets5
E: Unable to locate package libqt5core5
E: Unable to locate package libqt5gui5
E: Unable to locate package libqt5multimedia5
E: Unable to locate package libqt5multimediawidgets5
E: Unable to locate package libqt5opengl5

There is no way I can continue with making this work.

Any suggestions. BTW, the libdash is built successfully on this Ubuntu12.04 box.

Thanks
Shuai

[hustzhao]

sudo apt-add-repository ppa:ubuntu-sdk-team/ppa
sudo apt-add-repository ppa:canonical-qt5-edgers/ubuntu1204-qt5
sudo apt-get update
sudo apt-get install qtmultimedia5-dev qtbase5-dev libqt5widgets5 libqt5core5 libqt5gui5 libqt5multimedia5 libqt5multimediawidgets5 libqt5opengl5 libav-tools libavcodec-dev libavdevice-dev libavfilter-dev libavformat-dev libavutil-dev libpostproc-dev libswscale-dev
cd libdash/libdash/qtsampleplayer
mkdir build
cd build
wget http://www.cmake.org/files/v2.8/cmake-2.8.11.2-Linux-i386.sh
chmod a+x cmake-2.8.11.2-Linux-i386.sh
./cmake-2.8.11.2-Linux-i386.sh
./cmake-2.8.11.2-Linux-i386/bin/cmake ../
make
./qtsampleplayer