The VideoLAN Forums

Hello,

I have previously posted a question regarding vlc's capabilities and have seen posts that seemed to confirm
that vlc can stream a video as a video wall, using netsync to sync the recievers.

I have not however been able to find the correct way to do this. Can anyone please provide a working example of the following setup
using command line parameters?

- Streaming a video or playlist to a multicast address.
- Using the wall filter to split the streamed video into columns and rows.
- Use a netsync master to keep recievers in sync.
- Have a reciever display a part of the wall.

So far I have managed to setup the netsync master, and have 6 recievers display the same stream in sync,
using command line parameters (such as "vlc.exe rtp://... --netsync-master-ip ..."). The stream was made using the interface options (without the wall filter),
as I could not get the command line parameters for this working.

Thanks in advance for any help on this.

So, what is missing? The video wall part?

Exactly. I have not been able to stream the video as a video wall, and have the recievers display a specific cell of the wall.

As this solution is rather important, I am willing to pay for assistence in getting this setup to work. If anyone know how it is done, please
contact me either here on the forum, or directly by mail at kasper (at) wizarts-inc (dot) com, so we can discuss details and payment.

Do all the receivers display the full movie correctly?
Then, use vlc -vvv --video-splitter wall --wall-cols 2 --wall-rows 3 http://stream

I am not able to get a result using those parameters, could you please elaborate which client
should use them?

I have the streaming client, netsync master client, and several reciever clients.

I assume the streaming client should use them at least, and I have tried on the recievers as well, hoping it would set
which part of the wall to be displayed, but without success. I am only able to have it display the full video on each of the recievers.

I am still experimenting with streaming using command line parameters, which is causing some trouble,
til now I used the gui for this.

All clients.

I now have this setup (which does not work, clients do not display anything)

Stream:
vlc.exe -vvv test.mp4 --video-splitter wall --wall-cols 3 --wall-rows 2 udp:239.255.12.42 --ttl 12 --loop

Netsync master
vlc.exe udp://@239.255.12.42 --video-splitter wall --wall-cols 3 --wall-rows 2 --control netsync --netsync-master

Client
vlc.exe -vvv udp://@239.255.12.42 --video-splitter wall --wall-cols 3 --wall-rows 2 --control netsync --netsync-master-ip 192.168.1.6

Is this supposed to work? And is the wall parameters on the client specifying which part of the wall to display?

I really appreciate the help :)

Why the hell are you using wall on anything else than the client?

I think we misunderstood each other. When you replied 'all clients', I assumed all instances of vlc, I should have explained better.

Nevertheless, I finally got some of it working :) After clearing up some mistakes, I managed to get a receiver to display a specific part of the video
wall. My next challenge is displaying the window the receiver client creates (there's the normal vlc window, and then another which displays the video)
as fullscreen. I'm currently reading through the documentation, but if you know the solution I would very much appreciate your input
(could the video output be directed to the main vlc window for instance, rather than separate windows, since it's only supposed to display one window anyway).
The aspect ratio of the video wall windows is also not as intended, though I suspect this is because of the test video I am using, which is not the desired resolution of 5760x2160 . The goal is displaying a part of the video on 6 (3x2) full-hd monitors.

Thanks again for the assistance :)

When everything is working as intended, I will post the final solution, in case anyone else is having trouble with this and would like to see it.

Hi.

Did you ever get a final working solution for this?

Thanks

Has somebody found a working solution for this yet?

So this isnt possible?

Use the wall client side.