Mozaic feature

Hello,

I'm tested omxplayer with mozaic effect ;)

omxplayer --win "0 0 960 540" Video1.mp4 & omxplayer --win "960 540 1920" Video2.mp4
Keyboard is OK (for example q, quit) but no video 1, just video 2

if i replace "&" with "&&", normal, i look video 1 and after finished, video 2

It's possible to find a solution for use many omxplayer  ???? mozaic of video is cool

THX :) :) :)
Florent