Stian Remvik Datagrafikk


PiWall is an open source project letting you spread a video over several screens.


Install the mp3 player mpg123:

$ sudo apt-get install mpg123

Video format:

Doesn’t work properly with h264. Use mpeg4 avi fmpg4.

Use ffmpeg to encode videofile:

$ ffmpeg -i input.mp4 -qscale 0 -vcodec mpeg4 -acodec mp3 output.avi

Resolution two screen sync two videos: 1920x540 resolution


$ avconv -v quiet -re -i -vcodec copy -f avi -an udp:// -acodec copy -f mp3 pipe: | mpg123 -


$ pwomxplayer —config=my_config udp://

Autostart at boot: (can be aborted with ‘ctrl-c’ when video is playing!). Type the above commands at the bottom of ‘/home/pi/.bashrc’

«Harmonic Connection», 2017 interactive installation
«Words Images Thought Objects», by Vilde Salhus Røed.
Mobile art app
«BITWaves2» mobile app
«Neightbours», 2014 installation
«Late into that night, and all the following nights»,
2013 installation by Asbjørn Hollerud
«Bergen Reads», 2013 interactive installation
«Cubes», 2013 animation
«Hush!», 2011 interactive installation
«The Sound of Pictures», 2010 installation
«The Mask», 2008 animation