Jitsi screensharing doesn't work on desktop

[t3chguy]

given option to share everything or an application window, the latter sees no application windows and hitting share on either does nothing, video stream remains from webcam

[t3chguy]

maybe needs something like https://github.com/jitsi/jitsi-meet-electron/

[lampholder]

Not strictly speaking voip but it's the tag that's most likely to see this issue picked up by the right people.

[t3chguy]

Seems to still not be working even though PR matrix-org/matrix-react-sdk#1355 has landed :(

[t3chguy]

[xmeng1]

+1

[t3chguy]

Now that I have an NVL hat and can see both sides of the issue I'll take a look at it

[t3chguy]

This seems to have even further regressed as this never fires: matrix-org/matrix-react-sdk@5357454#diff-0e2cb0e79e0d376b964d6d11e52c4c45R150

[MurzNN]

Seems that this is Chrome engine issue, because Jitsi Screen Sharing works well in Riot-web on Firefox, but in Chrome browser - needs separate extension.

[t3chguy]

That's not correct. It's a nested iframe issue as I have pointed out above. For electron the extension would not work as electron exposes screen sharing devices via a native api and not gUM, and you can run screensharing in chrome without extensions if you start it with a command line argument

[BloodyIron]

I'm trying to do desktop sharing, via jitsi channel widget, with the desktop riot client, and it never ends up presenting options to share. When I try to share whole screen, or per app, just spins circles. :(

[MurzNN]

Can this https://chrome.google.com/webstore/detail/riotim-screen-sharing/ehgcnaneidbjcmblghjepmamomchgahd extension been integrated in Electron app for solve this issue?

[t3chguy]

Nope. Electron has special screen sharing apis which that extension does not support.

[MurzNN]

Developers of Jitsi recommend use https://github.com/jitsi/jitsi-meet-electron-utils for solve this permission problem, did you try this way?

[t3chguy]

@MurzNN Yup that is already fitted but it doesn't work due to it being an iframe inside an iframe and it not getting passed through because of this.

[BloodyIron]

I really wish we could get this solved. Using riot for screen sharing would be seriously useful! :D

[MurzNN]

Seems permission problem can be fixed using new getDisplayMedia() API in Chromium v70 https://groups.google.com/forum/#!msg/discuss-webrtc/Uf0SrR4uxzk/uO8sLrWuEAAJ

[MurzNN]

Jisti Meet implement new Chrome API via this commit jitsi/jitsi-meet#2233 (comment) so we can update Jitsi lib + Chromium in Riot electron build, and recheck permission problem.

[dbkr]

Just been looking at this after encountering the feature and how it's buggy as above. Agreed the way to go here is to let it use getDisplayMedia() once Electron is using a new enough chromium.

[ara4n]

@dbkr: do we magically get this for free after all the recent electron upgrades then?

[dbkr]

Chrome 70 is the magic milestone with getDisplayMedia. Electron 4.0 is chromium 69 - almost!

[MurzNN]

Seems update to Chrome 70 will not be done quickly - only in Electron 5.0 electron/electron#15059 :(
Also maybe we need Chrome 72, as described in https://developer.mozilla.org/en-US/docs/Web/API/MediaDevices/getDisplayMedia:

Chrome 70 — 72
Notes: Available as a member of Navigator instead of MediaDevices in Chrome 70 and 71.

[MurzNN]

Together with screensharing, maybe we also can got Remote control feature to Riot, available in Jitsi Meet, too? jitsi/jitsi-meet#1437

[BloodyIron]

Remote control as in during a conference? That could be super handy!

[akontsevich]

Yes, screensharing works in Chromium 70+. Whole screen sharing does not work in Firefox - only separate window (Jitsi has same problem). Why?

For Riot waiting for next Electron version with Chromium 70+?

[AlexFolland]

Lets get this issue back on topic, about JITSI widgets not supporting screensharing on Element Desktop.

Since this issue ticket is not for Element Desktop's Element Call integration which is what I'm currently interested in since the devs have said they won't be working on adding screen-sharing support to the embedded Jitsi in video rooms, is there an issue to track for Element Call integration in video rooms in Element Desktop?

I've tried reading the documentation here and adding the following to my config.json file, but it didn't work:

"element_call": {
	"use_exclusively": true
}

If I'm posting in the wrong issue ticket, please direct me to the right one. I would like to participate in actively testing Element Call video rooms within Element Desktop with screen-sharing.

[johnjaylward]

@conspiracynomad I suggest posting your full repro steps, including screenshots.

I'm having the same issue. Steps to reproduce:

1. Using current version of Element Desktop on windows 10
2. Join the new Video Room Beta
3. Add a "New Video Room Beta"
4. Create the room
5. Join the room
6. No option to share desktop/applications

When performing the same steps in Element-Web using Firefox, I was able to share my desktop.

@AlexFolland the new video rooms do use Jitsi by default. You need to enable an extra labs flag to use EC based video rooms.

I don't see any other options under the "Labs" menu related to video rooms/calls

[t3chguy]

@johnjaylward yup that's Jitsi which is what this issue is about.

To enable EC-backed Video Rooms you need to have full labs enabled, such as on Element Nightly.

[AlexFolland]

Thanks for posting that, as it gave me hope that I could get screen-sharing in Element Desktop. However, my experience did not lead to screen-sharing in Element Desktop.

1. I enabled that "Element Call video rooms" setting, which caused Element Desktop Nightly to reload immediately.
2. Then I went to the video room I have in my space.
3. There was no option to screen-share, and the GUI still looked like the familiar Jitsi video call GUI.
4. I looked at all the settings of the video room and could not find any option to use Element Call instead.

Is there something else I have to do to make the video room an Element Call video room, or force all video rooms to act like Element Call video rooms?

If:

• this issue ticket is about Jitsi, but
• the solution is to use Element Call, but
• Element Call video rooms don't have screen-sharing even with the "Element Call video rooms" option enabled, then

can we make an issue that is about screen-sharing not being available in Element Desktop that won't be merged incorrectly as a duplicate of this issue? If so, can someone please make it and link it here?

[t3chguy]

Then I went to the video room I have in my space.

You have to create a new room, a Jitsi room doesn't magically become an Element Call one. Also keep in mind all participants will need that labs flag toggled for it to function as expected.

I looked at all the settings of the video room and could not find any option to use Element Call instead.

You cannot change a room of one type to another, a new room must be made.

Element Call video rooms don't have screen-sharing even with the "Element Call video rooms" option enabled, then

You still haven't used an Element Call video room.

[AlexFolland]

I am not claiming that programming is magic. I am a programmer myself. I understand that there's no technical reason a video room could not negotiate and use whichever video call protocol is supported by the connected clients. However, if that's not how it's implemented, now I know. The particular implementation is not clarified in the GUI, and there was nothing before your comment just now that I could find on this topic in the client or on the rest of the internet that said a new video room has to be made. Thank you for saying so, but please realize that this is not very well-documented, and that has been the purpose of comments in these issue tickets.

That being said, I have created a new video room and it does indeed have screen-sharing, which works! I've encountered a few bugs already, but this is a great step forward. Thanks a lot to the developers for the implementation.

What is the expected behavior when someone running a client that does not support Element Call video rooms tries to connect to this video room?

[t3chguy]

I understand that there's no technical reason a video room could not negotiate and use whichever video call protocol is supported by the connected clients.

Its a reason of spec, the spec says both video room types are dictated by the immutable Matrix room type, thus it has to be chosen at the time of creation.

What is the expected behavior when someone running a client that does not support Element Call video rooms tries to connect to this video room?

I believe for them it'll present as a normal room with a widget, rather than a video room.

[Perfectio07]

Any updates on this? Until Element Call is made available for the non-nightly version of Element Desktop screensharing is essentially not possible for any of the people I use Element with.

Is there any ETA on when Element Call will be made available?

[G2G2G2G]

You can popout jitsi from element into the browser and it'll work
They probably aren't going to fix this, just gotta wait for element call.

[xxfogs]

Doesn't work when using a self-hosted Jitsi instance either. Pop-out is a workaround though.

[Perfectio07]

Currently, there is no way to share your screen on Element Desktop beyond a 1on1 call.

Is there any plans/conversations to fix this? If not, is there some kind of soft date when we can expect Element Call at least as a Labs option?

One of the biggest gripes my group has with Element is that we are unable to share screen at all in a call, which we do often(so they turn to Discord instead). Popping out Jitsi to the web is not a solution, its a tedious workaround, and telling everyone to install Element Nightly is impossible.

It really is disheartening trying to get people on board and switch, then they can't even share their screen...

[t3chguy]

If not, is there some kind of soft date when we can expect Element Call at least as a Labs option?

It is already available in Labs, it has been for probably over a year. Just needs to be enabled in config like it is on Element Nightly for example.

[johnjaylward]

Realistically, if it's not a UI option, it's not available in Labs to the average user. Having non technical users do anything outside of the UI is a very poor experience and likely a no-go

[Perfectio07]

So every user has to go and edit a config? At that point popping out Jitsi is easier. I am talking about something even a common user can do, just settings enable and done.

That being said, I am willing to give that a try. Could you please tell me how to do so? I don't know where I can find documentation on this

Edit: I think I found how to enable it, but won't be able to confirm until later. Honestly I just want to know when a proper solution will be put in place. I hope the dev could answer if Jitsi will be fixed or if Element Call will get a release date (even for Labs through the UI)

Edit2: I have no clue how to enable this in the config

[AlexFolland]

It's here in the Element Nightly GUI.

That being said, I agree that getting everyone to get Element Nightly to enable this just to make your one server's video room work is a tall order. With how many years this issue ticket has been open with supposedly active development on this project, I expected seamless one-click-join voice rooms with screen sharing like Discord at this point.

[Destinyg133]

Only Element-Nightly see's new Element Call Video Room, Element-Desktop see it as jitsi video room altho both have video rooms beta opt in at the Labs
Element-Desktop creates jitsi instance with beta:

Element-Desktop-Nightly creates normal element call video room:

But if entered with element-desktop it will treat it as normal room without jitsi:

[ahmet-cetinkaya]

Same

[AlexMaxim]

I use Element-Nightly + self hosted matrix server. I've tried using Element Call Video Room, but Camera and Sharing doesn't work, without any exceptions:

May be I missed some preferences?

[pitagoras530]

I use Element-Nightly + self hosted matrix server. I've tried using Element Call Video Room, but Camera and Sharing doesn't work, without any exceptions: May be I missed some preferences?

same issue with element call too

[FreeDurok]

Same issue, pending without any message or error, any one found a solution?

[dal00]

I've solved it with not using element-desktop :(
It works in Firefox.

[pitagoras530]

I've solved it with not using element-desktop :( It works in Firefox.

sad