Window cannot be shared in browser (firefox, chromium) in linux

[matthiasneuner]

• I have read the FAQ.
• I have searched in existing issues.

Environment

• OS: Manjaro / Cinnamon
• scrcpy version: 1.19
• installation method: AUR
• device model: all
• Android version: 10

Describe the bug

In Manjaro with Cinnamon desktop, the window cannot be shared in video conferences both in firefox and chromium.
The window is simply not listed among the possible windows:

However, sharing the complete desktop works fine.

Sharing the window in video conferences would be great for using Android tablets with pen input devices for presentations, sketching, teaching purposes ...

I am not sure how much this is related to scrcpy. On the other hand, I have this issue with no other application.

[rom1v]

You could use V4L2 sink: https://github.com/Genymobile/scrcpy#v4l2loopback

(to expose the device screen as a webcam)

[rom1v]

(That's weird that the window is not listed though.)

[matthiasneuner]

You could use V4L2 sink: https://github.com/Genymobile/scrcpy#v4l2loopback

(to expose the device screen as a webcam)

I already thought of that, but that means usually that I cannot use my real webcam in video conferences simultaneously :-) .

[diegofernandess]

I have the same problem on Debian Sid, Gnome 40.4, Xorg version 1.20.11, Android 11, Scrcpy 1.19 and Google Chrome 94.

[rom1v]

Could please you ask/report to SDL? (scrcpy just opens a SDL window)

[diegofernandess]

The problem seems indeed to be related to SDL. Using libsdl2-2.0-0 version 2.0.16 does not work, whereas the version 2.0.14 works.

[m1ga]

should have looked here before my video call before 🤣 Shared the whole screen at the end but good to know it's not just my browser

[slash3g]

Apparently this bug is caused by a property (WM_NAME) that SDL is not setting on windows created using SDL_CreateWindow.
I've reported the bug in libsdl-org/SDL#4924, along with a workaround.

[jakob-grabner]

Looks like the linked issue (libsdl-org/SDL#4924) is fixed already, any chance getting this also fixed in scrcpy?

[rom1v]

I guess scrcpy has nothing to do, upgrade your SDL/distro if the fix is released.