Does OBS 29 support Intel ARC QSV x264 on Linux? (Flatpak version)

[Reguna]

I am using Fedora 37 KDE (Kernel 6.2, OBS 29.0.2 in flatpak) with an Intel Arc A380.
I cannot find the Intel QSV x264 encoder in output settings (only software x264).
Is it not available in Linux or am I missing some dependencies? I have attached my startup log file for reference.

 

[Tuna]

VAAPI encoding is on the "Advanced Output" tab.

 

[Reguna]

VAAPI encoding is on the "Advanced Output" tab.

Thank you for your quick answer!