I’ve installed the standalone info-beamer on my Rpi4 and successfully run samples/shader on my 1920x1080 display.
I’ve installed the hevc decoder using the command: ./info-beamer -install-hevc
I’m trying to run the code below and get the error: can't open /dev/argon-hevcmem
The video.mp4 is hevc and 1920x1080.
Any thoughts on how to resolve this?
gl.setup(1920, 1080)
local video = resource.load_video{
file = "video.mp4";
looped = true;
raw = true;
}
function node.render()
video:place(0, 0, NATIVE_WIDTH, NATIVE_HEIGHT)
end
If you have a 1920x1080 display, I highly suggest you use H264 instead of HEVC encoded video files. They are 100% reliable and work without those HEVC libraries.
At some point those files in /dev were renamed, but the library isn’t updated at the moment.
Thank you for the response. No surprise: that fixed the issue. And, as you noted, I should be using h264 anyways. (I knew one of the encoders did not work, but I forgot which).
Everything with that code runs well. However, it was just a warm-up to spanning video across (2) 1920x1080 displays.
I read this thread. and below is code I’m running now. But it’s not working. The secondary display is just a duplicate of the primary.
gl.setup(3840, 1080)
INFOBEAMER_DUAL_DISPLAY=1
INFOBEAMER_SECONDARY_OFFSET_X=1920
INFOBEAMER_SECONDARY_OFFSET_Y=0
local video = resource.load_video{
file = "waves_1920x1080_h264_anamorph.mp4";
looped = true;
}
function node.render()
gl.clear(1,1,1,0)
video:draw(0, 0, 3840, 1080)
end
Relevant part of my config.txt says this:
[pi4]
# Enable DRM VC4 V3D driver on top of the dispmanx display stack
dtoverlay=vc4-fkms-v3d
max_framebuffers=2
I’ve played around with several variations of node.lua and config.txt to no avail. What am I missing?
are meant to set environment variables, not variables within info-beamer’s Lua environment. So you have to set them in the shell before starting the info-beamer binary. I recommend writing a small shell script that starts the info-beamer process. Like this:
Then make the script executable and use it to start info-beamer. The reason these settings need to be set before starting info-beamer is that they, at least at the moment, cannot be changed dynamically by Lua code at runtime but are set once at the start.
