To configure Webconverger with an attraction screensaver, for example to tell potential users which services are on offer, you need to setup your homepage, the homepage you control, to do that.
This guide will run through a way to do this, by playing a video file after a period of inactivity.
This homepage should be tailored to your kiosk setup. Since you might not want your regular visitor's from home to see this screensaver.
How to make the videos, given JPEG slides
Using https://trac.ffmpeg.org/wiki/Create%20a%20video%20slideshow%20from%20images as a starting point.
Problem is ffmpeg will take the resolution of the first frame, then only encode identically-sized frames. The trick is to expand the image using imagemagick's extent function:
tmpdir=$(mktemp -d) count=0 padtowidth=3 for p in *.jpg do convert "$p" -gravity center -background black -extent 1440x1080 $tmpdir/$(printf "%0*d\n" $padtowidth $c).jpg c=$(($c + 1)) done echo $c images ffmpeg -r 1/10 -i $tmpdir/%03d.jpg -c:v libx264 -r 30 -pix_fmt yuv420p out.mp4 rm -rf $tmpdir
The above code assumes an end resolution of 1440x1080.
How to make your homepage play the video after a period of inactivity
- the video file you want to play
- the period of time for the timeout
Next you need to configure Webconverger with the security policy to allow the screensaver to play fullscreen, using the prefs API pointing to a code snippet that looks like:
Components.utils.import("resource://gre/modules/Services.jsm"); Components.utils.import("resource://gre/modules/NetUtil.jsm"); Services.perms.add(NetUtil.newURI("http://YOUR_HOMEPAGE_URL/"), "fullscreen", 1); pref("full-screen-api.allow-trusted-requests-only", false);
Remember to replace
How to update the screensaver
You should host the video file as an MP4 on your homepage URL, e.g.
You simply update the video file on your homepage.
- See http://attract.webconverger.com/ for a demo, REMEMBER: you need to configure Webconverger's panel with the security policy to run the video in fullscreen without prompt