My PC freezes or restarts random, but only when im using Shotcut

Since last week my PC just random freezes/restarts with Shotcut and it happends the second time today.

After system reboot, i see a Hardware error code and in Linux
Terminal i see this error when i use sudo journalctl -p 3 -xb command:

– Journal begins at Thu 2020-08-06 04:21:30 CEST, ends at Mon 2021-03-29 05:58:40 CEST. –
Mar 29 05:55:56 koboldx-z170 kernel: mce: [Hardware Error]: CPU 2: Machine Check: 0 Bank 0: b200000000030005
Mar 29 05:55:56 koboldx-z170 kernel: mce: [Hardware Error]: TSC 0
Mar 29 05:55:56 koboldx-z170 kernel: mce: [Hardware Error]: PROCESSOR 0:506e3 TIME 1616990154 SOCKET 0 APIC 4 microcode e2

I have no problems with stability in Windows and also in Linux when watching media or browsing, my System is stable. Is there anything i can do about it?

I’m using Kernel: 5.10.23-1

Could you check your CPU temperature when using Shotcut ?
Video processing is very heavy for CPU…it could make it freeze, IMHO

Little bit lacking on the information…

inxi --admin --verbosity=7 --filter --no-host --width
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = "",
        LC_ALL = (unset),
        LC_ADDRESS = "de_DE.UTF-8",
        LC_NAME = "de_DE.UTF-8",
        LC_MONETARY = "de_DE.UTF-8",
        LC_PAPER = "de_DE.UTF-8",
        LC_IDENTIFICATION = "de_DE.UTF-8",
        LC_TELEPHONE = "de_DE.UTF-8",
        LC_MEASUREMENT = "de_DE.UTF-8",
        LC_TIME = "de_DE.UTF-8",
        LC_NUMERIC = "de_DE.UTF-8",
        LANG = "en_DE.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
System:
  Kernel: 5.10.23-1-MANJARO x86_64 bits: 64 compiler: gcc v: 10.2.0 
  parameters: BOOT_IMAGE=/vmlinuz-5.10-x86_64 
  root=UUID=eb235aa7-d461-413d-800e-ea57385703fb rw quiet apparmor=1 
  security=apparmor resume=UUID=a44dd3c4-f5f1-4587-8934-6f7413d28d4f 
  udev.log_priority=3 
  Desktop: KDE Plasma 5.21.3 tk: Qt 5.15.2 wm: kwin_x11 vt: 1 dm: SDDM 
  Distro: Manjaro Linux base: Arch Linux 
Machine:
  Type: Desktop System: Gigabyte product: Z170X-UD3 v: N/A serial: <filter> 
  Mobo: Gigabyte model: Z170X-UD3-CF v: x.x serial: <filter> 
  UEFI-[Legacy]: American Megatrends v: F23d date: 12/01/2017 
Memory:
  RAM: total: 15.59 GiB used: 1.9 GiB (12.2%) 
  RAM Report: permissions: Unable to run dmidecode. Root privileges required. 
CPU:
  Info: Quad Core model: Intel Core i7-6700K bits: 64 type: MT MCP 
  arch: Skylake-S family: 6 model-id: 5E (94) stepping: 3 microcode: E2 cache: 
  L2: 8 MiB bogomips: 64026 
  Speed: 800 MHz min/max: 800/4700 MHz Core speeds (MHz): 1: 800 2: 800 3: 800 
  4: 800 5: 800 6: 800 7: 802 8: 800 
  Flags: 3dnowprefetch abm acpi adx aes aperfmperf apic arat arch_perfmon art 
  avx avx2 bmi1 bmi2 bts clflush clflushopt cmov constant_tsc cpuid 
  cpuid_fault cx16 cx8 de ds_cpl dtes64 dtherm dts ept ept_ad erms est f16c 
  flexpriority flush_l1d fma fpu fsgsbase fxsr hle ht hwp hwp_act_window 
  hwp_epp hwp_notify ibpb ibrs ida intel_pt invpcid invpcid_single lahf_lm lm 
  mca mce md_clear mmx monitor movbe mpx msr mtrr nonstop_tsc nopl nx pae pat 
  pbe pcid pclmulqdq pdcm pdpe1gb pebs pge pln pni popcnt pse pse36 pti pts 
  rdrand rdseed rdtscp rep_good rtm sdbg sep smap smep ss ssbd sse sse2 sse4_1 
  sse4_2 ssse3 stibp syscall tm tm2 tpr_shadow tsc tsc_adjust 
  tsc_deadline_timer vme vmx vnmi vpid x2apic xgetbv1 xsave xsavec xsaveopt 
  xsaves xtopology xtpr 
  Vulnerabilities: Type: itlb_multihit status: KVM: VMX disabled 
  Type: l1tf 
  mitigation: PTE Inversion; VMX: conditional cache flushes, SMT vulnerable 
  Type: mds mitigation: Clear CPU buffers; SMT vulnerable 
  Type: meltdown mitigation: PTI 
  Type: spec_store_bypass 
  mitigation: Speculative Store Bypass disabled via prctl and seccomp 
  Type: spectre_v1 
  mitigation: usercopy/swapgs barriers and __user pointer sanitization 
  Type: spectre_v2 mitigation: Full generic retpoline, IBPB: conditional, 
  IBRS_FW, STIBP: conditional, RSB filling 
  Type: srbds mitigation: Microcode 
  Type: tsx_async_abort mitigation: Clear CPU buffers; SMT vulnerable 
Graphics:
  Device-1: NVIDIA TU102 [GeForce RTX 2080 Ti Rev. A] vendor: Micro-Star MSI 
  driver: nvidia v: 460.56 alternate: nouveau,nvidia_drm bus-ID: 01:00.0 
  chip-ID: 10de:1e07 class-ID: 0300 
  Device-2: Oculus VR Rift CV1 Sensor type: USB driver: uvcvideo 
  bus-ID: 1-14:6 chip-ID: 2833:0211 class-ID: ef00 serial: <filter> 
  Device-3: Oculus VR Rift CV1 Sensor type: USB driver: uvcvideo bus-ID: 2-9:4 
  chip-ID: 2833:0211 class-ID: ef00 serial: <filter> 
  Device-4: Oculus VR Rift CV1 Sensor type: USB driver: uvcvideo bus-ID: 6-2:2 
  chip-ID: 2833:0211 class-ID: ef00 serial: <filter> 
  Display: x11 server: X.Org 1.20.10 compositor: kwin_x11 driver: 
  loaded: nvidia display-ID: :0 screens: 1 
  Screen-1: 0 s-res: 2560x1440 s-dpi: 122 s-size: 533x302mm (21.0x11.9") 
  s-diag: 613mm (24.1") 
  Monitor-1: DP-4 res: 2560x1440 dpi: 123 size: 527x296mm (20.7x11.7") 
  diag: 604mm (23.8") 
  OpenGL: renderer: GeForce RTX 2080 Ti/PCIe/SSE2 v: 4.6.0 NVIDIA 460.56 
  direct render: Yes 
Audio:
  Device-1: Intel 100 Series/C230 Series Family HD Audio vendor: Gigabyte 
  driver: snd_hda_intel v: kernel bus-ID: 00:1f.3 chip-ID: 8086:a170 
  class-ID: 0403 
  Device-2: NVIDIA TU102 High Definition Audio vendor: Micro-Star MSI 
  driver: snd_hda_intel v: kernel bus-ID: 01:00.1 chip-ID: 10de:10f7 
  class-ID: 0403 
  Device-3: Creative Labs Sound Core3D [Sound Blaster Recon3D / Z-Series] 
  driver: snd_hda_intel v: kernel bus-ID: 0b:00.0 chip-ID: 1102:0012 
  class-ID: 0403 
  Sound Server-1: ALSA v: k5.10.23-1-MANJARO running: yes 
  Sound Server-2: JACK v: 0.125.0 running: no 
  Sound Server-3: PulseAudio v: 14.2 running: yes 
  Sound Server-4: PipeWire v: 0.3.23 running: no 
Network:
  Device-1: Intel Ethernet I219-V vendor: Gigabyte driver: e1000e v: kernel 
  port: f000 bus-ID: 00:1f.6 chip-ID: 8086:15b8 class-ID: 0200 
  IF: enp0s31f6 state: up speed: 1000 Mbps duplex: full mac: <filter> 
  IP v4: <filter> type: dynamic noprefixroute scope: global 
  broadcast: <filter> 
  IP v6: <filter> type: noprefixroute scope: link 
  WAN IP: <filter> 
Bluetooth:
  Message: No Bluetooth data was found. 
Logical:
  Message: No LVM data was found. 
RAID:
  Message: No RAID data was found. 
Drives:
  Local Storage: total: 3.87 TiB used: 355.41 GiB (9.0%) 
  SMART Message: Unable to run smartctl. Root privileges required. 
  ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Samsung model: SSD 960 EVO 500GB 
  size: 465.76 GiB block-size: physical: 512 B logical: 512 B speed: 31.6 Gb/s 
  lanes: 4 rotation: SSD serial: <filter> rev: 2B7QCXE7 temp: 36.9 C 
  scheme: GPT 
  ID-2: /dev/sda maj-min: 8:0 vendor: Samsung model: SSD 830 Series 
  size: 238.47 GiB block-size: physical: 512 B logical: 512 B speed: 6.0 Gb/s 
  rotation: SSD serial: <filter> rev: 3B1Q scheme: MBR 
  ID-3: /dev/sdb maj-min: 8:16 vendor: HGST (Hitachi) model: HDN724030ALE640 
  size: 2.73 TiB block-size: physical: 4096 B logical: 512 B speed: 6.0 Gb/s 
  rotation: 7200 rpm serial: <filter> rev: A5E0 scheme: GPT 
  ID-4: /dev/sdc maj-min: 8:32 type: USB vendor: Samsung 
  model: Portable SSD T5 size: 465.76 GiB block-size: physical: 512 B 
  logical: 512 B rotation: SSD serial: <filter> scheme: MBR 
  Message: No Optical or Floppy data was found. 
Partition:
  ID-1: / raw-size: 88.61 GiB size: 86.72 GiB (97.87%) used: 18.73 GiB (21.6%) 
  fs: ext4 dev: /dev/sdc1 maj-min: 8:33 label: N/A 
  uuid: eb235aa7-d461-413d-800e-ea57385703fb 
  ID-2: /boot raw-size: 200 MiB size: 189.7 MiB (94.84%) 
  used: 97.2 MiB (51.2%) fs: ext3 dev: /dev/sdc3 maj-min: 8:35 label: N/A 
  uuid: 26eda82e-b403-49b8-abca-202167417020 
  ID-3: /home raw-size: 332.03 GiB size: 325.82 GiB (98.13%) 
  used: 3.79 GiB (1.2%) fs: ext4 dev: /dev/sdc4 maj-min: 8:36 label: N/A 
  uuid: ada4a6a2-bd0a-4652-b386-7c637bba7ee9 
  ID-4: /media/games raw-size: 585.94 GiB size: 585.94 GiB (100.00%) 
  used: 300.76 GiB (51.3%) fs: ntfs dev: /dev/sdb2 maj-min: 8:18 label: games 
  uuid: 3CF8CC1DF8CBD2F6 
  ID-5: /media/os raw-size: 210.94 GiB size: 210.94 GiB (100.00%) 
  used: 32.03 GiB (15.2%) fs: ntfs dev: /dev/sda1 maj-min: 8:1 label: os 
  uuid: FA6CC1816CC138E1 
Swap:
  Kernel: swappiness: 10 (default 60) cache-pressure: 100 (default) 
  ID-1: swap-1 type: partition size: 2.93 GiB used: 0 KiB (0.0%) priority: -2 
  dev: /dev/sdc2 maj-min: 8:34 label: N/A 
  uuid: a44dd3c4-f5f1-4587-8934-6f7413d28d4f 
Unmounted:
  ID-1: /dev/nvme0n1p1 maj-min: 259:1 size: 442.47 GiB fs: ntfs label: ssm 
  uuid: AE7EDC0696B158FD 
  ID-2: /dev/sdb1 maj-min: 8:17 size: 128 MiB fs: <superuser required> 
  label: N/A uuid: N/A 
  ID-3: /dev/sdb3 maj-min: 8:19 size: 1.08 TiB fs: <superuser required> 
  label: N/A uuid: N/A 
  ID-4: /dev/sdb4 maj-min: 8:20 size: 1.08 TiB fs: <superuser required> 
  label: N/A uuid: N/A 
USB:
  Hub-1: 1-0:1 info: Full speed (or root) Hub ports: 16 rev: 2.0 
  speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900 
  Hub-2: 1-3:2 info: Oculus VR Rift CV1 ports: 4 rev: 2.1 speed: 480 Mb/s 
  chip-ID: 2833:2031 class-ID: 0900 
  Device-1: 1-3.1:4 info: Oculus VR Rift CV1 type: HID 
  driver: hid-generic,usbhid interfaces: 2 rev: 2.0 speed: 12 Mb/s 
  power: 100mA chip-ID: 2833:0031 class-ID: 0300 serial: <filter> 
  Device-2: 1-5:3 info: Saitek PLC Saitek X52 Pro Flight Control System 
  type: HID driver: hid-generic,usbhid interfaces: 1 rev: 2.0 speed: 12 Mb/s 
  power: 230mA chip-ID: 06a3:0762 class-ID: 0300 
  Device-3: 1-13:5 info: A4Tech XL-730K / XL-750BK / XL-755BK Mice 
  type: Keyboard,Mouse driver: hid-generic,usbhid interfaces: 2 rev: 1.1 
  speed: 12 Mb/s power: 100mA chip-ID: 09da:9090 class-ID: 0301 
  Device-4: 1-14:6 info: Oculus VR Rift CV1 Sensor type: Video 
  driver: uvcvideo interfaces: 2 rev: 2.1 speed: 480 Mb/s power: 200mA 
  chip-ID: 2833:0211 class-ID: ef00 serial: <filter> 
  Hub-3: 2-0:1 info: Full speed (or root) Hub ports: 10 rev: 3.0 speed: 5 Gb/s 
  chip-ID: 1d6b:0003 class-ID: 0900 
  Device-1: 2-2:2 info: Samsung Portable SSD T5 type: Mass Storage driver: uas 
  interfaces: 1 rev: 3.1 speed: 5 Gb/s power: 896mA chip-ID: 04e8:61f5 
  class-ID: 0806 serial: <filter> 
  Hub-4: 2-3:3 info: Oculus VR Rift CV1 ports: 4 rev: 3.0 speed: 5 Gb/s 
  chip-ID: 2833:3031 class-ID: 0900 
  Device-1: 2-9:4 info: Oculus VR Rift CV1 Sensor type: Video driver: uvcvideo 
  interfaces: 2 rev: 3.0 speed: 5 Gb/s power: 800mA chip-ID: 2833:0211 
  class-ID: ef00 serial: <filter> 
  Hub-5: 3-0:1 info: Full speed (or root) Hub ports: 2 rev: 2.0 
  speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900 
  Hub-6: 4-0:1 info: Full speed (or root) Hub ports: 4 rev: 3.1 speed: 10 Gb/s 
  chip-ID: 1d6b:0003 class-ID: 0900 
  Hub-7: 5-0:1 info: Full speed (or root) Hub ports: 2 rev: 2.0 
  speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900 
  Hub-8: 6-0:1 info: Full speed (or root) Hub ports: 2 rev: 3.1 speed: 10 Gb/s 
  chip-ID: 1d6b:0003 class-ID: 0900 
  Device-1: 6-2:2 info: Oculus VR Rift CV1 Sensor type: Video driver: uvcvideo 
  interfaces: 2 rev: 3.0 speed: 5 Gb/s power: 800mA chip-ID: 2833:0211 
  class-ID: ef00 serial: <filter> 
Sensors:
  System Temperatures: cpu: 29.8 C mobo: 27.8 C gpu: nvidia temp: 37 C 
  Fan Speeds (RPM): N/A gpu: nvidia fan: 25% 
Info:
  Processes: 213 Uptime: 26m wakeups: 4 Init: systemd v: 247 tool: systemctl 
  Compilers: gcc: 10.2.0 Packages: pacman: 1296 lib: 389 flatpak: 0 
  Shell: Bash v: 5.1.0 running-in: konsole inxi: 3.3.03

sudo dmesg --level emerg,alert,crit,err,warn:

[    0.106093] MDS CPU bug present and SMT on, data leak possible. See https://www.kernel.org/doc/html/latest/admin-guide/hw-
vuln/mds.html for more details.
[    0.106093] TAA CPU bug present and SMT on, data leak possible. See https://www.kernel.org/doc/html/latest/admin-guide/hw-
vuln/tsx_async_abort.html for more details.
[    0.106093]  #5 #6 #7
[    0.352778] i8042: PNP: PS/2 appears to have AUX port disabled, if this is incorrect please boot with i8042.nopnp
[    0.354100] resource sanity check: requesting [mem 0xfdffe800-0xfe0007ff], which spans more than pnp 00:07 [mem 0xfdb00000
-0xfdffffff]
[    0.354103] caller pmc_core_probe+0x85/0x380 mapping multiple BARs
[    2.617857] nvidia: loading out-of-tree module taints kernel.
[    2.617862] nvidia: module license 'NVIDIA' taints kernel.
[    2.617862] Disabling lock debugging due to kernel taint

[    2.752281] NVRM: loading NVIDIA UNIX x86_64 Kernel Module  460.56  Tue Feb 23 23:31:36 UTC 2021
[    4.108414] ext3 filesystem being mounted at /boot supports timestamps until 2038 (0x7fffffff)
[    5.292311] kauditd_printk_skb: 62 callbacks suppressed
[   10.579747] kauditd_printk_skb: 11 callbacks suppressed
[  140.810076] [UFW BLOCK] IN=enp0s31f6 OUT= MAC=01:00:5e:00:00:01:08:96:d7:5b:cc:dc:08:00 SRC=192.168.178.1 DST=224.0.0.1 LE
N=36 TOS=0x00 PREC=0xC0 TTL=1 ID=31427 DF PROTO=2  
[  265.808677] [UFW BLOCK] IN=enp0s31f6 OUT= MAC=01:00:5e:00:00:01:08:96:d7:5b:cc:dc:08:00 SRC=192.168.178.1 DST=224.0.0.1 LE
N=36 TOS=0x00 PREC=0xC0 TTL=1 ID=36285 DF PROTO=2  
[  390.807288] [UFW BLOCK] IN=enp0s31f6 OUT= MAC=01:00:5e:00:00:01:08:96:d7:5b:cc:dc:08:00 SRC=192.168.178.1 DST=224.0.0.1 LE
N=36 TOS=0x00 PREC=0xC0 TTL=1 ID=41785 DF PROTO=2  
[  515.805905] [UFW BLOCK] IN=enp0s31f6 OUT= MAC=01:00:5e:00:00:01:08:96:d7:5b:cc:dc:08:00 SRC=192.168.178.1 DST=224.0.0.1 LE
N=36 TOS=0x00 PREC=0xC0 TTL=1 ID=45633 DF PROTO=2  
[  640.804525] [UFW BLOCK] IN=enp0s31f6 OUT= MAC=01:00:5e:00:00:01:08:96:d7:5b:cc:dc:08:00 SRC=192.168.178.1 DST=224.0.0.1 LE
N=36 TOS=0x00 PREC=0xC0 TTL=1 ID=56133 DF PROTO=2  
[  765.803400] [UFW BLOCK] IN=enp0s31f6 OUT= MAC=01:00:5e:00:00:01:08:96:d7:5b:cc:dc:08:00 SRC=192.168.178.1 DST=224.0.0.1 LE
N=36 TOS=0x00 PREC=0xC0 TTL=1 ID=56404 DF PROTO=2  
[  890.802131] [UFW BLOCK] IN=enp0s31f6 OUT= MAC=01:00:5e:00:00:01:08:96:d7:5b:cc:dc:08:00 SRC=192.168.178.1 DST=224.0.0.1 LE
N=36 TOS=0x00 PREC=0xC0 TTL=1 ID=1031 DF PROTO=2  
[ 1015.800793] [UFW BLOCK] IN=enp0s31f6 OUT= MAC=01:00:5e:00:00:01:08:96:d7:5b:cc:dc:08:00 SRC=192.168.178.1 DST=224.0.0.1 LE
N=36 TOS=0x00 PREC=0xC0 TTL=1 ID=12386 DF PROTO=2  
[ 1140.799543] [UFW BLOCK] IN=enp0s31f6 OUT= MAC=01:00:5e:00:00:01:08:96:d7:5b:cc:dc:08:00 SRC=192.168.178.1 DST=224.0.0.1 LE
N=36 TOS=0x00 PREC=0xC0 TTL=1 ID=24443 DF PROTO=2  
[ 1265.798430] [UFW BLOCK] IN=enp0s31f6 OUT= MAC=01:00:5e:00:00:01:08:96:d7:5b:cc:dc:08:00 SRC=192.168.178.1 DST=224.0.0.1 LE
N=36 TOS=0x00 PREC=0xC0 TTL=1 ID=25449 DF PROTO=2  
[ 1390.797048] [UFW BLOCK] IN=enp0s31f6 OUT= MAC=01:00:5e:00:00:01:08:96:d7:5b:cc:dc:08:00 SRC=192.168.178.1 DST=224.0.0.1 LE
N=36 TOS=0x00 PREC=0xC0 TTL=1 ID=31214 DF PROTO=2  
[ 1515.795708] [UFW BLOCK] IN=enp0s31f6 OUT= MAC=01:00:5e:00:00:01:08:96:d7:5b:cc:dc:08:00 SRC=192.168.178.1 DST=224.0.0.1 LE
N=36 TOS=0x00 PREC=0xC0 TTL=1 ID=42508 DF PROTO=2  
[ 1640.794702] [UFW BLOCK] IN=enp0s31f6 OUT= MAC=01:00:5e:00:00:01:08:96:d7:5b:cc:dc:08:00 SRC=192.168.178.1 DST=224.0.0.1 LE
N=36 TOS=0x00 PREC=0xC0 TTL=1 ID=43757 DF PROTO=2  
[ 1765.793300] [UFW BLOCK] IN=enp0s31f6 OUT= MAC=01:00:5e:00:00:01:08:96:d7:5b:cc:dc:08:00 SRC=192.168.178.1 DST=224.0.0.1 LE
N=36 TOS=0x00 PREC=0xC0 TTL=1 ID=50153 DF PROTO=2  
[ 1890.791954] [UFW BLOCK] IN=enp0s31f6 OUT= MAC=01:00:5e:00:00:01:08:96:d7:5b:cc:dc:08:00 SRC=192.168.178.1 DST=224.0.0.1 LE
N=36 TOS=0x00 PREC=0xC0 TTL=1 ID=50619 DF PROTO=2  
[ 2015.790581] [UFW BLOCK] IN=enp0s31f6 OUT= MAC=01:00:5e:00:00:01:08:96:d7:5b:cc:dc:08:00 SRC=192.168.178.1 DST=224.0.0.1 LE
N=36 TOS=0x00 PREC=0xC0 TTL=1 ID=51363 DF PROTO=2  
[ 2140.789418] [UFW BLOCK] IN=enp0s31f6 OUT= MAC=01:00:5e:00:00:01:08:96:d7:5b:cc:dc:08:00 SRC=192.168.178.1 DST=224.0.0.1 LE
N=36 TOS=0x00 PREC=0xC0 TTL=1 ID=52738 DF PROTO=2  
[ 2265.788055] [UFW BLOCK] IN=enp0s31f6 OUT= MAC=01:00:5e:00:00:01:08:96:d7:5b:cc:dc:08:00 SRC=192.168.178.1 DST=224.0.0.1 LE
N=36 TOS=0x00 PREC=0xC0 TTL=1 ID=54321 DF PROTO=2  
[ 2390.786712] [UFW BLOCK] IN=enp0s31f6 OUT= MAC=01:00:5e:00:00:01:08:96:d7:5b:cc:dc:08:00 SRC=192.168.178.1 DST=224.0.0.1 LE
N=36 TOS=0x00 PREC=0xC0 TTL=1 ID=61495 DF PROTO=2  
[ 2515.785784] [UFW BLOCK] IN=enp0s31f6 OUT= MAC=01:00:5e:00:00:01:08:96:d7:5b:cc:dc:08:00 SRC=192.168.178.1 DST=224.0.0.1 LE
N=36 TOS=0x00 PREC=0xC0 TTL=1 ID=6842 DF PROTO=2  
[ 2640.784479] [UFW BLOCK] IN=enp0s31f6 OUT= MAC=01:00:5e:00:00:01:08:96:d7:5b:cc:dc:08:00 SRC=192.168.178.1 DST=224.0.0.1 LE
N=36 TOS=0x00 PREC=0xC0 TTL=1 ID=12677 DF PROTO=2  
[ 2765.783115] [UFW BLOCK] IN=enp0s31f6 OUT= MAC=01:00:5e:00:00:01:08:96:d7:5b:cc:dc:08:00 SRC=192.168.178.1 DST=224.0.0.1 LE
N=36 TOS=0x00 PREC=0xC0 TTL=1 ID=17645 DF PROTO=2

Its always below 65°C, there is no temp problem when using Shotcut, i also had no problem when using Handbrake in Linux.