fullscreen video cropped on high-dpi screen

As a consequence of this issue, image screenshots are saved in low resolution (1600x900 instead of 3200x1800), so they look blurry.

Hi, thanks for your report. Right now I don't have such screen available for testing, so if you could run kazam with --debug switch and attach the output here, I'll greatly appreciate it.

Thanks for looking into the issue.
I believe there is nothing special about the display that could not be simulated by setting the UI scale to 2 in Ubuntu control center.

Attached is a log from doing a full screen capture (only the upper left screen quarter was recorded).

Indeed, screenshots take the whole screen, but with half resolution (like gnome-screenshot 3.10, but unlike gimp 2.8.10 which takes full resolution).

I thought Kazam was really good - until I encountered this problem. It makes the video recording unusuable on HiDPI systems, sadly. I tried Kazam on Linux Mint 19.1.

So... It doesn't look like this is ever going to be fixed, seeing this bug report is 6 years old now... Anyone aware of an alternative? Simplescreenrecorder has the same issue sadly...

The problem is easily solved by using the function "get_monitor_scale_factor" from Gdk.screen object of the Gtk library.

I have stored the value returned by that function in the elements of hw.screens. Then i have used that value in the funciont "setup_video_source" in gstreamer.py for fix the values of startx, starty, endx and endy.

Please, see the patch attached.

Any updates?

Confirming that the patch by sllorente is working fine. Thanks a lot.

the patch by sllorente is working and was helpful to me. thanks.

Updated patch (the previous patch caused an error when trying to capture "all screens"). Now it is only necessary to patch the file "backend/prefs.py"

The attachment "Patch for taking into account scale factor in HiDPI screens" seems to be a patch. If it isn't, please remove the "patch" flag from the attachment, remove the "patch" tag, and if you are a member of the ~ubuntu-reviewers, unsubscribe the team.

[This is an automated message performed by a Launchpad user owned by ~brian-murray, for any issues please contact him.]

I did not use the patch from sllorente because I found this blog post, https://mlisi.xyz/post/kazam/, before finding this issue, but it appears to do the same fix. I modified both the `gstreamer.py` and `prefs.py` files. This worked for me after experiencing the exact same problem.