Thank you so much Antoine and Benjamin for those ideas, I'll try to get this running.

I also saw that 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.
I was wondering if that could work too. With an X Server running on the Android.
https://f-droid.org/repository/browse/?fdfilter=x%20server&fdid=au.com.darkside.XServer

Or am I missing something?


On 2017년 04월 04일 09:33, Antoine Villeret wrote:

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
<mailto: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
    <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> <http://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
    <https://play.google.com/store/apps/details?id=tantra.tantransha.cardboardremotedesktop.lite&hl=en>
    >>>
    >>>
    >>> http://www.vrbites.com/apps/cardboard-vnc-free/
    <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>
    >>> <mailto:abonnements@revolwear.com
    <mailto:abonnements@revolwear.com>>> wrote:
    >>>
    >>>     Hi list,
    >>>
    >>>     I'm looking for a solution to use the gem output on an android
    >>> phone
    >>>     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>
    >>>     <http://www.swatterco.com/vr_streamer.php
    <http://www.swatterco.com/vr_streamer.php>>
    >>>
    >>>     Any ideas about this?
    >>>
    >>>     m.