[Galene] Re: feature: two cameras for galene

[Shevek <shevek@anarres.org>]

Thank you for following up.

In UI terms, I would expect:
Present/Share My ...
--> Window / Tab / Desktop / _Camera_
----> Select the appropriate window/desktop/camera as usual.

where Camera is a new option allowing me to select a v4l2 source instead 
of using screen capture. The presentation source comes in via something 
which (in hardware terms) looks like a camera, but usually isn't, in 
fact, an optical element. In practice, I use an ATEM to composite the 
"presentation" image from various SDI sources, and render it down to a 
single stream entirely in hardware, which then presents as a v4l2 device.

If I'm streaming to an RTMP/RTSP reflector (Youtube, Twitch, Brightcove, 
Vimeo, etc), then I  don't need Galene/Zoom/OBS/GVC at all, as the 
hardware has RT*P support. But if I'm hosting a meeting on a particular 
bidirectional video conference system, then the ability to treat a 
secondary UVC device as a presentation source is an absolute blocker 
(unless I want to render the presenter as a PiP, which detracts from one 
corner of the presentation, and does not give the viewer choice of focus).

Does that help? I can probably make screenshots...

S.

On 5/10/22 15:40, Juliusz Chroboczek wrote:
>>> They're thinking that presentation cannot be a camera feed,
> 
> Having two cameras is not unusual.  At seminars, we sometimes have one
> camera focused on the speaker and one that films
> 
>>> Logging in from two browser tabs in order to speak to an audience and
>>> present slides would be very odd and somewhat backwards.
> 
> We've never encountered this issue, since in our setup the two cameras are
> connected to two distinct computers.  We've also been hoping that
> interfacing with OBS would solve this kind of setup issues, but OBS has
> been slow in doing their WebRTC support, and RTMP doesn't have the right
> features.
> 
> Shevek, what should the UI for that look like?  Open the side menu, click
> « Add secondary camera », a second Present/Unpresent button appears?
> 
> If we develop such a feature, would you be willing to do some testing for us?
> 
> -- Juliusz
>