Hi,

I don't know about the state of pd/gem on raspi these days, but some
years back I had to synch and control multiple video projections using
raspi3's for a performance (with some diy servo shutter for the video
projectors), and finally used omxplayer (on the framebuffer directly)
and python with OSC control, as it was precise to the frame - the whole
was controlled by a puredata timeline sending command by OSC to make
loops, pause, jumps in the videos ... it worked nicely for days ;)

you can find the messy code here :
https://framagit.org/Olm-e/osc-omxplayer (probably to revise with
current python/omxplayer)

In this it does not support 2 screens directly (raspi3 has only 1), but
omxplayer seems to support it so it's probably a matter of passing the
good arguments to it (--display=2 and --display=7 )

hope it helps ;)

Ol;


 From: Simon Iten <itensimon@gmail.com>

>
> Hi list,
>
> Has somebody used the two HDMI outs from PD to play two videos on two
> different screens?
>
> I am finding infos from people doing it with omxplayer, but I need it
> synced and looped. Or are there any other Linux video players that can
> sync
> two streams on two different monitors?




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