Kdenlive hardware acceleration enable

hello,

how do i enable hardware acceleration in kdenlive?

The option “GPU processing (movit library)” is grayed out in settings/playback.

When applying effects (like alpha shapes (mask)) moving the box is very slow, the app freezes and lag.

❯ inxi -F
System:
  Host: desktop Kernel: 6.7.9-arch1-1 arch: x86_64 bits: 64
  Desktop: KDE Plasma v: 6.0.1 Distro: Arch Linux
Machine:
  Type: Desktop Mobo: ASRock model: B650M-HDV/M.2 serial: <superuser required>
    UEFI: American Megatrends LLC. v: 2.08 date: 03/01/2024
CPU:
  Info: 8-core model: AMD Ryzen 7 7700X bits: 64 type: MT MCP cache: L2: 8 MiB
  Speed (MHz): avg: 2491 min/max: 400/5573 cores: 1: 400 2: 4293 3: 400
    4: 3841 5: 5122 6: 3567 7: 400 8: 4002 9: 400 10: 3957 11: 400 12: 4526
    13: 3575 14: 400 15: 400 16: 4182
Graphics:
  Device-1: NVIDIA GA106 [RTX A2000] driver: nvidia v: 550.54.14
  Device-2: AMD Raphael driver: amdgpu v: kernel
  Display: wayland server: X.Org v: 23.2.4 with: Xwayland v: 23.2.4
    compositor: kwin_wayland driver: X: loaded: nvidia
    gpu: nvidia,nvidia-nvswitch resolution: 1: 2560x1440~60Hz
    2: 3440x1440~120Hz
  API: EGL v: 1.5 drivers: nvidia,radeonsi,swrast,zink
    platforms: gbm,wayland,x11,surfaceless,device
  API: OpenGL v: 4.6.0 compat-v: 4.5 vendor: nvidia mesa v: 550.54.14
    renderer: NVIDIA RTX A2000/PCIe/SSE2
  API: Vulkan v: 1.3.279 drivers: nvidia surfaces: xcb,xlib,wayland
Audio:
  Device-1: NVIDIA GA106 High Definition Audio driver: snd_hda_intel
  Device-2: AMD Rembrandt Radeon High Definition Audio driver: snd_hda_intel
  Device-3: AMD Family 17h/19h HD Audio driver: snd_hda_intel
  API: ALSA v: k6.7.9-arch1-1 status: kernel-api
  Server-1: PipeWire v: 1.0.3 status: active
Network:
  Device-1: MEDIATEK MT7922 802.11ax PCI Express Wireless Network Adapter
    driver: mt7921e
  IF: wlp7s0 state: down mac: 06:0a:de:0a:52:0d
  Device-2: Realtek RTL8125 2.5GbE driver: r8169
  IF: enp8s0 state: up speed: 1000 Mbps duplex: full mac: 9c:6b:00:10:61:ef
  IF-ID-1: virbr0 state: down mac: 52:54:00:16:6e:44
Bluetooth:
  Device-1: Foxconn / Hon Hai Wireless_Device driver: btusb type: USB
  Report: btmgmt ID: hci0 rfk-id: 0 state: down bt-service: enabled,running
    rfk-block: hardware: no software: yes address: 38:D5:7A:4B:7E:E2 bt-v: 5.2
Drives:
  Local Storage: total: 6.38 TiB used: 1.12 TiB (17.6%)
  ID-1: /dev/nvme0n1 vendor: Kingston model: SFYRD2000G size: 1.82 TiB
  ID-2: /dev/nvme1n1 vendor: Kingston model: SNV2S2000G size: 1.82 TiB
  ID-3: /dev/sda vendor: Western Digital model: WD30EZRX-00DC0B0
    size: 2.73 TiB
  ID-4: /dev/sdb model: USB Flash Memory size: 14.45 GiB type: USB
Partition:
  ID-1: / size: 473.56 GiB used: 229.43 GiB (48.4%) fs: ext4
    dev: /dev/nvme0n1p3
  ID-2: /boot/efi size: 511 MiB used: 148 KiB (0.0%) fs: vfat
    dev: /dev/nvme0n1p1
Swap:
  ID-1: swap-1 type: partition size: 36 GiB used: 0 KiB (0.0%)
    dev: /dev/nvme0n1p2
Sensors:
  System Temperatures: cpu: 42.4 C mobo: 28.0 C gpu: amdgpu temp: 37.0 C
  Fan Speeds (rpm): N/A
Info:
  Memory: total: 32 GiB note: est. available: 30.48 GiB used: 4.51 GiB (14.8%)
  Processes: 387 Uptime: 5m Shell: fish inxi: 3.3.33

❯ yay -Ss kdenlive
...
extra/kdenlive 24.02.0-2 (16.8 MiB 72.4 MiB) [kde-applications kde-multimedia] (Installed)
    A non-linear video editor for Linux using the MLT video framework
mm@desktop ~
❯ yay -Ss movit
aur/movit-git r915.0b17055-2 (+2 0.00)
    The modern video toolkit
extra/movit 1.7.1-1 (231.4 KiB 754.5 KiB) (Installed)
    The modern video toolkit