4tiles PiWall - duplicated and lagging video

[Zahra Al-Shakhs]

Hi 

I am trying to build a 4 tiles PiWall. The layout of the wall is shown on figure below 

I followed the instructions on the website but I have to problems

1. The tiles are not showing a section of the video, instead, the are playing the same video. 

Here is how my configuration files look like:

.piwall

# wall definition 

[4bez_wall]

width=3072

height=1371

x=0

y=0

 

# corresponding tile definitions

[4bez_1]

wall=4bez_wall

width=914

height=508

x=0

y=0

 

[4bez_2]

wall=4bez_wall

width=914

height=508

x=1066

y=0

 

[4bez_3]

wall=4bez_wall

width=1092

height=609

x=-1092

y=-762

[4bez_4]

wall=4bez_wall

width=1092

height=609

x=0

y=-762

 

# config

[4bez]

pi1=4bez_1

pi2=4bez_2

pi3=4bez_3

pi4=4bez_4

.pitile

[tile]

id=pi1

I run this command on all the tiles changing (4bez_1)  

pwomxplayer --tile-code=4bez_1 udp://239.0.1.23:1234?buffer_size=1200000B

and this command on the master 

avconv -re -i movie.avi -vcodec copy -f avi -an udp://239.0.1.23:1234

2. The video is not running smoothly sometimes it freezes for few seconds 

Is there something wrong on the configurations? why is video duplicated on all the tiles?

Is there something I can do to improve the quality of the video and make play smoothly? I heard about hardware acceleration but I don't know how to enable it.

[Viktor Forgács]

See

https://groups.google.com/forum/m/#!topic/piwall-users/MAE9oWAkoTw

Please note the pi can't play a video seamlessly larger than full HD.

[Zahra Al-Shakhs]

Thank you.

I used a video of lower resolution and it is playing smoothly.

But still, I can't get the video divided upon the tiles.

[Alex Goodyear]

Hi,

You need to replace "pwomxplayer --tile-code=4bez_1 udp://239.0.1.23:1234?buffer_size=1200000B" with

"pwomxplayer --config=4bez udp://239.0.1.23:1234?buffer_size=1200000B" and ensure that each slave tile has a copy of the .piwall file and a unique .pitile identity file (that matches the id in the .piwall file, in your case pi[1234]) in the /home/pi directory.

Your stuttering video could be caused by other network traffic (if you are not using a private wired connection) or may be an encoding issue which has been covered many, many times before.

Alex

PiWall developer.

[Alex Goodyear]

[Zahra Al-Shakhs]

Thank you.

The config command fixed the problem.

I also rewrote the configuration files.

I used a lower resolution video and there were no shuttering. However, I will take a look at encoding issue.