Hi,
I was thinking about a solution to stream Gem output to network device for a while And the solution that came up to my mind is to render in a frame buffer and send the texture to a GPU video encoder like nvenc then download the encoded frame to the RAM and stream it.
This would be much more efficient than direct screen grabbing.
Unfortunately I didn't take the time to implement this for now. Some vnc server use hardware compression but I don't know one on Linux.
Best
A
Le 3 avr. 2017 9:08 PM, "Benjamin ~ b01" benjah@free.fr a écrit :
Hello,
Le 03/04/2017 à 18:50, Max a écrit :
On 2017년 04월 02일 20:01, Max wrote:
Hi Alan,
that's interesting. I haven't thought about the VNC option. I will need A VNC server on my Linux computer which allows me to send the content of the GEM window only.
Note to self and anyone searching this some day: this works with x11vnc. Use the command xwininfo to find out the ID of the window to be shared, then use x11vnc -id {id number here} to share only one window to the vnc client.
However cardboard-vnc-free is doing too much. First of all, it controls the moise pointer on the server (as a VNC client should) but I don't need that. There is an option "Viewer" in the connection settings that will diable this and lower the latency from about 3 seconds to 1 second.
cardboard-vnc-free is also adding two viewports to the shared image, to fake a 3D. That's a show stopper, because I want to use the stereo mode in GEM.
Another idea would be to use VLC on the android phone to open a stream that is sent by the computer via Pd/Gem and some way to cast the stream.
I think this is the way to go. It also has lower latency than a VNC connection.
What's the best way to stream a GEM window, so that I can play this stream with VLC on the Android device?
I would say (if you are on linux) : use https://github.com/umlaeute/v4l2loopback to create a virtual v4l2 device, then it's possible to use pix_record eventually in conjonction with pix_snap to shoot Gem window and write it to this virtual v4l2 device (on my computer, it would involve to send a [codec v4l2< message to pix_record) then you can stream to the Android device with ffmpeg fed by this v4l2 device and read it with vlc
also possible to grab the Gem screen with ffmpeg -f x11grab +options
++ b
M.
On 2017년 04월 01일 23:31, Alan Brooker wrote:
Hey Max,
Recently I have been looking at this very subject, in the end using trinus vr (trinusvirtualreality.com http://trinusvirtualreality.com) on windows was the easiest solution for me
I have tried something similar on linux (Fedora) but my problem was just getting my PC to actually connect with my phone- this would be trivial I assume for someone who is experienced setting up VNC connections/networking on Linux. So take a look at these and good luck
https://play.google.com/store/apps/details?id=tantra.tantransha.
cardboardremotedesktop.lite&hl=en
http://www.vrbites.com/apps/cardboard-vnc-free/
On Fri, Mar 31, 2017 at 8:34 PM, Max <abonnements@revolwear.com mailto:abonnements@revolwear.com> wrote:
Hi list, I'm looking for a solution to use the gem output on an androidphone for vr.
I found this app, but it is windows only, no linux host. http://www.swatterco.com/vr_streamer.php <http://www.swatterco.com/vr_streamer.php> Any ideas about this? m.
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