LUbuntu / bash get VLC window title

Hello, I upgrade from Lutuntu 14.04 to 16.04 yesterday and one script does not run properly now. Previously, I make a script to extract the window title of VLC (to show the title of the current track on a webradio), but since the upgrade it doesn't work. The command line used to extract the data is :

Code:

line=$(exec xlsclients -l | grep "VLC" | cut -c -9 --complement | cut -d "-" -f 1-2)

Code:

# first list all windows open, filter for VLC, cut to have only the 2 firsts datas with "-" as separator

(and after, an "echo $line > file" to follow the data to one other session). After some checks, the command xlsclients -l doesn't return the VLC window. What I need to change ? (I don't understand why the line return are ignored by the forum, sorry)

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LUbuntu / bash get VLC window title