| Line 20: | Line 20: | ||
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. | 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. | ||
===Gemwin remote host=== | ===Gemwin remote host=== | ||
| Line 52: | Line 45: | ||
error: JACKerror: JackClient::Execute error name = pure_data_2 | error: JACKerror: JackClient::Execute error name = pure_data_2 | ||
error: JACK: server shut down | error: JACK: server shut down | ||
===ffmpeg=== | |||
Best overview on streaming with ffmpeg is to be found https://trac.ffmpeg.org/wiki/StreamingGuide#Pointtopointstreaming | |||
====udpvideo lite/ffmpeg==== | |||
Since streaming to a VR-Headset with minimum latency is pretty much what you want with a live drone video this abandoned freeware app is doing exactly that: | |||
[https://play.google.com/store/apps/details?id=com.imersiva.udpvideo udpvideo lite] | |||
Then run on the desktop: | |||
<tt>ffmpeg -f x11grab -video_size wxga -r 25 -i :0.0 -f mpjpeg udp://192.168.1.2:5678</tt> | |||
Revision as of 21:40, 4 July 2017
Goal: Stream to Android
Goal: streaming the Gem-window of a Linux Desktop to a VR-headset running on an Android phone.
This page documents different possible approaches and hopefully will show how it's done when successful.
Unsucessful Approaches
Apps
If you are on Windows, you have some choices for apps:
Using x11vnc
Use 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.
Gemwin remote host
It's possible to open the Gemwwin on a remote host with the [remotehost( message to [gemwin] (see gemwin-help) However, there is no further explanation of that feature and I haven't seen any discussion on pd-list or here about it.
With an X Server running on the Android.
I can see the Pd gui on my phone with $ export PULSE_SERVER=tcp:{local IP}:4712 metacity & puredata
the test audio patch makes noise on the computer.
It (expectedly) doesn't allow me to open a GEM window
error: GEM: X server has no OpenGL GLX extension error: GEM: Error creating const context error: GEM: A serious error occured creating const Context error: GEM: Continue at your own risk! error: GEM: X server has no OpenGL GLX extension error: GEM: Unable to create window error: [gemwin]: no window made error: GEM: Create window first! error: JACKerror: SuspendRefNum error error: JACKerror: JackClient::Execute error name = pure_data_2 error: JACK: server shut down
ffmpeg
Best overview on streaming with ffmpeg is to be found https://trac.ffmpeg.org/wiki/StreamingGuide#Pointtopointstreaming
udpvideo lite/ffmpeg
Since streaming to a VR-Headset with minimum latency is pretty much what you want with a live drone video this abandoned freeware app is doing exactly that: udpvideo lite
Then run on the desktop: ffmpeg -f x11grab -video_size wxga -r 25 -i :0.0 -f mpjpeg udp://192.168.1.2:5678