PlasmaTube with many problems

I’ve just installed it and it’s not working properly.
First of all, I added sources so that videos are displayed, all well and good. There you can also browse and start a video, but each time an extra window of the mpv media player is opened for it, so far so good.

Now for the problems :

  • The mpv window can’t be closed, except when I close PlasmaTube, then it closes meanly

  • all videos are opened in a seperate window of the mpv player. Even it it’s normal i don’t like too much, because you should at least have the possibility to configure the behaviour

  • if I close the mpv-player-window while playing a video, the video stops and nothing happens (window stays open, PlasmaTube doesn’t react either)

  • it is not even possible to detect the mpv player-windows with top that you could kill the process (surprising)

  • second big problem, after the first video you can not start a second video, unless I restart PlasmaTube

  • also strange, when I click on Picture-in-picture, a superficial black new PlasmaTube window opens, where nothing is played

Here is the terminal output of such a session (where a video was played and then PlasmaTube was closed)

Qt: Session management error: None of the authentication protocols specified are supported
org.kde.plasmatube: Loading source "{f705315a-6e25-4048-ac70-db333b5238b3}"
org.kde.plasmatube: Loading source "{3ae8ec6a-08e1-4529-b4b4-9c5c94d61431}"
org.kde.plasmatube: Loading source "{6b1b6c35-c9db-48cd-b3a2-3054c9cc975d}"
org.kde.plasmatube: Loading source "{07065664-d196-4b73-b849-6e604844156f}"
Cannot initialize model with data QJsonObject(). missing: QJsonValue(string, "urls")
Cannot initialize model with data QJsonObject(). missing: QJsonValue(string, "urls")
Cannot initialize model with data QJsonObject(). missing: QJsonValue(string, "urls")
qrc:/qt/qml/org/kde/plasmatube/ui/TrendingPage.qml:10:1: QML TrendingPage: Created graphical object was not placed in the graphics scene.
EDL: Could not open source file 'https://rr4---sn-8xgn5uxa-quhs.googlevideo.com/videoplayback?expire=1718729929&ei=aWhxZqbAOKWfi9oPv823kAE&ip=46.189.34.132&id=o-AFQ4NHA10TcBBdma56GJOjSeLQx4ThPaSprieahvxZmU&itag=22&source=youtube&requiressl=yes&xpc=EgVo2aDSNQ%3D%3D&mh=hL&mm=31%2C26&mn=sn-8xgn5uxa-quhs%2Csn-i5heen7d&ms=au%2Conr&mv=m&mvi=4&pl=19&initcwndbps=2177500&bui=AbKP-1OuOaimVXVoHj_aYzDZJGM4Nrkr4oaiaQO1CICdq_JtfflqQ3nLoG-tEycFWKuu9qbGrqzFQK1K&spc=UWF9f1OCX7CWbj_d1lunp7Xme2ZgYF7WPooaF0vnXj6b8WgN0dZXCF8xY6W_&vprv=1&svpuc=1&mime=video%2Fmp4&ns=jGx0z4hPpiT__QK1hpYfFacQ&rqh=1&cnr=14&ratebypass=yes&dur=185.063&lmt=1718644407027391&mt=1718707977&fvip=1&c=WEB&sefc=1&txp=5532434&n=vJPH2iFGdQFmVA&sparams=expire%2Cei%2Cip%2Cid%2Citag%2Csource%2Crequiressl%2Cxpc%2Cbui%2Cspc%2Cvprv%2Csvpuc%2Cmime%2Cns%2Crqh%2Ccnr%2Cratebypass%2Cdur%2Clmt&sig=AJfQdSswRQIgN049qm1-PPaYTz8D2RoeNGv-SAOaaIC7EN2QLZJz6CkCIQDzVOkf1ZUipR9c2w-xR8DviinNPU5cIhd9Zp6Hjouq_A%3D%3D&lsparams=mh%2Cmm%2Cmn%2Cms%2Cmv%2Cmvi%2Cpl%2Cinitcwndbps&lsig=AHlkHjAwRQIhAIO8FJtPSQKAKXuYim2uNLDspsmx4sdFBQ3Ex6w__p98AiBpfNkvnYTqIWEEVIOoifBxx-wMZCJKaGemvhVb3xS3NA%3D%3D'.
[vo/gpu/opengl] Could not make context current!
[ffmpeg/video] vp9: Hardware is lacking required capabilities
[ffmpeg/video] vp9: Failed setup for format cuda: hwaccel initialisation returned error.
[ffmpeg/video] vp9: Hardware is lacking required capabilities
[ffmpeg/video] vp9: Failed setup for format cuda: hwaccel initialisation returned error.
[ffmpeg/video] vp9: No support for codec vp9 profile 0.
[ffmpeg/video] vp9: Failed setup for format vaapi: hwaccel initialisation returned error.
[ffmpeg/video] vp9: Failed setup for format vdpau: hwaccel initialisation returned error.

I am not an expert and therefore cannot even recognize what the problem is. Btw, i updated my manjaro yesterday, so that’s not the point.

Greetings

well there are a lot of messages relying on cuda/nvidia. please post the output of the mandatory

inxi --admin --verbosity=7 --filter --no-host --width

and

echo $XDG_SESSION_TYPE && glxinfo | grep server

output from inxi --admin --verbosity=7 --filter --no-host --width

System:
  Kernel: 6.6.32-1-MANJARO arch: x86_64 bits: 64 compiler: gcc v: 14.1.1
    clocksource: tsc avail: hpet,acpi_pm
    parameters: BOOT_IMAGE=/boot/vmlinuz-6.6-x86_64
    root=UUID=1759a44c-349a-4690-a6af-00874960d823 rw quiet splash
    udev.log_priority=3
  Desktop: KDE Plasma v: 6.0.5 tk: Qt v: N/A info: frameworks v: 6.2.0
    wm: kwin_x11 vt: 2 dm: SDDM Distro: Manjaro base: Arch Linux
Machine:
  Type: Desktop Mobo: BIOSTAR model: A68MD PRO serial: <superuser required>
    uuid: <superuser required> UEFI: American Megatrends v: 4.6.5
    date: 12/15/2015
Battery:
  Message: No system battery data found. Is one present?
Memory:
  System RAM: total: 8 GiB available: 7.68 GiB used: 6.26 GiB (81.5%)
  Message: For most reliable report, use superuser + dmidecode.
  Array-1: capacity: 8 GiB slots: 2 modules: 2 EC: None
    max-module-size: 4 GiB note: est.
  Device-1: Channel-A DIMM 0 type: DDR3 detail: synchronous unbuffered
    (unregistered) size: 4 GiB speed: 1333 MT/s volts: curr: 2 min: 2 max: 2
    width (bits): data: 64 total: 64 manufacturer: G Skill Intl
    part-no: F3-12800CL7-4GBXM serial: N/A
  Device-2: Channel-B DIMM 0 type: DDR3 detail: synchronous unbuffered
    (unregistered) size: 4 GiB speed: 1333 MT/s volts: curr: 2 min: 2 max: 2
    width (bits): data: 64 total: 64 manufacturer: G Skill Intl
    part-no: F3-12800CL7-4GBXM serial: N/A
CPU:
  Info: model: AMD Athlon X4 840 bits: 64 type: MT MCP arch: Steamroller
    level: v2 built: 2014 process: GF 28nm family: 0x15 (21) model-id: 0x30 (48)
    stepping: 1 microcode: 0x6003106
  Topology: cpus: 1x cores: 4 smt: enabled cache: L1: 256 KiB
    desc: d-4x16 KiB; i-2x96 KiB L2: 4 MiB desc: 2x2 MiB
  Speed (MHz): avg: 1400 high: 1418 min/max: 1400/3100 boost: enabled
    scaling: driver: acpi-cpufreq governor: schedutil cores: 1: 1396 2: 1396
    3: 1418 4: 1393 bogomips: 24767
  Flags: 3dnowprefetch abm aes aperfmperf apic arat avx bmi1 bpext clflush
    cmov cmp_legacy constant_tsc cpb cpuid cr8_legacy cx16 cx8 de
    decodeassists extapic extd_apicid f16c flushbyasid fma fma4 fpu fsgsbase
    fxsr fxsr_opt ht hw_pstate ibs lahf_lm lbrv lm lwp mca mce misalignsse mmx
    mmxext monitor msr mtrr nodeid_msr nonstop_tsc nopl npt nrip_save nx osvw
    overflow_recov pae pat pausefilter pclmulqdq pdpe1gb perfctr_core
    perfctr_nb pfthreshold pge pni popcnt pse pse36 ptsc rdtscp rep_good sep
    skinit ssbd sse sse2 sse4_1 sse4_2 sse4a ssse3 svm svm_lock syscall tbm
    tce topoext tsc tsc_scale vmcb_clean vme vmmcall wdt xop xsave xsaveopt
  Vulnerabilities:
  Type: gather_data_sampling status: Not affected
  Type: itlb_multihit status: Not affected
  Type: l1tf status: Not affected
  Type: mds status: Not affected
  Type: meltdown status: Not affected
  Type: mmio_stale_data status: Not affected
  Type: reg_file_data_sampling status: Not affected
  Type: retbleed mitigation: untrained return thunk; SMT vulnerable
  Type: spec_rstack_overflow status: Not affected
  Type: spec_store_bypass mitigation: Speculative Store Bypass disabled via
    prctl
  Type: spectre_v1 mitigation: usercopy/swapgs barriers and __user pointer
    sanitization
  Type: spectre_v2 mitigation: Retpolines; STIBP: disabled; RSB filling;
    PBRSB-eIBRS: Not affected; BHI: Not affected
  Type: srbds status: Not affected
  Type: tsx_async_abort status: Not affected
Graphics:
  Device-1: NVIDIA GM107 [GeForce GTX 750 Ti] vendor: Gigabyte driver: nvidia
    v: 550.90.07 alternate: nouveau,nvidia_drm non-free: 545.xx+ status: current
    (as of 2024-04; EOL~2026-12-xx) arch: Maxwell code: GMxxx
    process: TSMC 28nm built: 2014-2019 pcie: gen: 3 speed: 8 GT/s lanes: 16
    ports: active: none off: DVI-D-1 empty: DVI-I-1,HDMI-A-1,HDMI-A-2
    bus-ID: 01:00.0 chip-ID: 10de:1380 class-ID: 0300
  Display: x11 server: X.Org v: 21.1.13 with: Xwayland v: 24.1.0
    compositor: kwin_x11 driver: X: loaded: nvidia gpu: nvidia,nvidia-nvswitch
    display-ID: :0 screens: 1
  Screen-1: 0 s-res: 1600x1200 s-dpi: 94 s-size: 432x321mm (17.01x12.64")
    s-diag: 538mm (21.19")
  Monitor-1: DVI-D-1 mapped: DVI-D-0 note: disabled model: NEC LCD2170NX
    serial: <filter> built: 2009 res: 1600x1200 hz: 60 dpi: 94 gamma: 1.2
    size: 432x324mm (17.01x12.76") diag: 540mm (21.3") ratio: 4:3 modes:
    max: 1600x1200 min: 640x480
  API: EGL v: 1.5 hw: drv: nvidia platforms: device: 0 drv: nvidia device: 2
    drv: swrast gbm: drv: nvidia surfaceless: drv: nvidia x11: drv: nvidia
    inactive: wayland,device-1
  API: OpenGL v: 4.6.0 compat-v: 4.5 vendor: nvidia mesa v: 550.90.07
    glx-v: 1.4 direct-render: yes renderer: NVIDIA GeForce GTX 750 Ti/PCIe/SSE2
    memory: 1.95 GiB
  API: Vulkan v: 1.3.279 layers: 5 device: 0 type: discrete-gpu name: NVIDIA
    GeForce GTX 750 Ti driver: nvidia v: 550.90.07 device-ID: 10de:1380
    surfaces: xcb,xlib
Audio:
  Device-1: AMD FCH Azalia vendor: Biostar Microtech Intl Corp
    driver: snd_hda_intel v: kernel bus-ID: 00:14.2 chip-ID: 1022:780d
    class-ID: 0403
  Device-2: NVIDIA GM107 High Definition Audio [GeForce 940MX]
    vendor: Gigabyte driver: snd_hda_intel v: kernel pcie: gen: 3 speed: 8 GT/s
    lanes: 16 bus-ID: 01:00.1 chip-ID: 10de:0fbc class-ID: 0403
  API: ALSA v: k6.6.32-1-MANJARO status: kernel-api with: aoss
    type: oss-emulator tools: alsactl,alsamixer,amixer
  Server-1: JACK v: 1.9.22 status: off tools: N/A
  Server-2: PipeWire v: 1.0.7 status: off with: pipewire-media-session
    status: active tools: pw-cli
  Server-3: PulseAudio v: 17.0 status: active with: pulseaudio-alsa
    type: plugin tools: pacat,pactl
Network:
  Device-1: Realtek RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet
    vendor: Biostar Microtech Intl Corp driver: r8169 v: kernel pcie: gen: 1
    speed: 2.5 GT/s lanes: 1 port: d000 bus-ID: 02:00.0 chip-ID: 10ec:8168
    class-ID: 0200
  IF: enp2s0 state: up speed: 1000 Mbps duplex: full mac: <filter>
  IP v4: <filter> type: dynamic noprefixroute scope: global
    broadcast: <filter>
  IP v6: <filter> type: dynamic noprefixroute scope: global
  IP v6: <filter> type: noprefixroute scope: link
  Info: services: NetworkManager,systemd-timesyncd
  WAN IP: <filter>
Bluetooth:
  Device-1: Cambridge Silicon Radio Bluetooth Dongle (HCI mode) driver: btusb
    v: 0.8 type: USB rev: 2.0 speed: 12 Mb/s lanes: 1 mode: 1.1 bus-ID: 4-3:2
    chip-ID: 0a12:0001 class-ID: e001
  Report: rfkill ID: hci0 rfk-id: 0 state: up address: see --recommends
Logical:
  Message: No logical block device data found.
RAID:
  Message: No RAID data found.
Drives:
  Local Storage: total: 3.98 TiB used: 880.07 GiB (21.6%)
  SMART Message: Unable to run smartctl. Root privileges required.
  ID-1: /dev/sda maj-min: 8:0 vendor: Crucial model: CT2000BX500SSD1
    size: 1.82 TiB block-size: physical: 512 B logical: 512 B speed: 6.0 Gb/s
    tech: SSD serial: <filter> fw-rev: 030 scheme: GPT
  ID-2: /dev/sdb maj-min: 8:16 vendor: Kingston model: SA400S37120G
    size: 111.79 GiB block-size: physical: 512 B logical: 512 B speed: 6.0 Gb/s
    tech: SSD serial: <filter> fw-rev: B1D1 scheme: GPT
  ID-3: /dev/sdc maj-min: 8:32 vendor: Western Digital model: WD15EADS-00P8B0
    size: 1.36 TiB block-size: physical: 512 B logical: 512 B speed: 3.0 Gb/s
    tech: N/A serial: <filter> fw-rev: 0A01 scheme: MBR
  ID-4: /dev/sdd maj-min: 8:48 vendor: Samsung model: ST750LM022 HN-M750MBB
    size: 698.64 GiB block-size: physical: 4096 B logical: 512 B type: USB
    rev: 2.1 spd: 480 Mb/s lanes: 1 mode: 2.0 tech: HDD rpm: 5400
    serial: <filter> fw-rev: 8101 scheme: GPT
  Optical-1: /dev/sr0 vendor: HL-DT-ST model: DVDRAM GH24NSD5 rev: LV00
    dev-links: cdrom
  Features: speed: 40 multisession: yes audio: yes dvd: yes
    rw: cd-r,cd-rw,dvd-r,dvd-ram state: running
Partition:
  ID-1: / raw-size: 103.2 GiB size: 101.02 GiB (97.89%) used: 34.68 GiB (34.3%)
    fs: ext4 dev: /dev/sdb2 maj-min: 8:18 label: N/A
    uuid: 1759a44c-349a-4690-a6af-00874960d823
  ID-2: /boot/efi raw-size: 300 MiB size: 299.4 MiB (99.80%)
    used: 292 KiB (0.1%) fs: vfat dev: /dev/sdb1 maj-min: 8:17 label: N/A
    uuid: D4E9-602D
  ID-3: /home raw-size: 1.31 TiB size: 1.29 TiB (98.35%)
    used: 615.81 GiB (46.8%) fs: ext4 dev: /dev/sdc5 maj-min: 8:37 label: pers
    uuid: 9232bf80-64fb-4523-a3e0-4ff9048c08a8
  ID-4: /mnt/home-backup raw-size: 477.83 GiB size: 469.26 GiB (98.21%)
    used: 182.58 GiB (38.9%) fs: ext4 dev: /dev/sdd2 maj-min: 8:50
    label: Home-Backup uuid: 038f846f-59c9-49d3-bf90-e27c0dc8855d
  ID-5: /mnt/root-backup raw-size: 68.26 GiB size: 66.64 GiB (97.62%)
    used: 44.78 GiB (67.2%) fs: ext4 dev: /dev/sdd3 maj-min: 8:51
    label: Root-Backup uuid: 19c65b9b-f123-4cf8-bd49-bb7363bab2c6
Swap:
  Kernel: swappiness: 10 (default 60) cache-pressure: 100 (default) zswap: yes
    compressor: zstd max-pool: 20%
  ID-1: swap-1 type: partition size: 8.29 GiB used: 2.23 GiB (26.9%)
    priority: -2 dev: /dev/sdb3 maj-min: 8:19 label: N/A
    uuid: 601e5087-ae8d-454b-9915-059584163414
Unmounted:
  ID-1: /dev/sda1 maj-min: 8:1 size: 529 MiB fs: ntfs label: Wiederherstellung
    uuid: FA4E2AAE4E2A639B
  ID-2: /dev/sda2 maj-min: 8:2 size: 100 MiB fs: vfat label: N/A
    uuid: F62C-8C61
  ID-3: /dev/sda3 maj-min: 8:3 size: 16 MiB fs: <superuser required>
    label: N/A uuid: N/A
  ID-4: /dev/sda4 maj-min: 8:4 size: 1.82 TiB fs: ntfs label: N/A
    uuid: 10902F49902F349E
  ID-5: /dev/sdc1 maj-min: 8:33 size: 1 KiB fs: <superuser required>
    label: N/A uuid: N/A
  ID-6: /dev/sdc6 maj-min: 8:38 size: 58.59 GiB fs: ext4 label: backup
    uuid: b53e6fad-b48a-4521-b995-f5048d9a6e0b
  ID-7: /dev/sdd1 maj-min: 8:49 size: 16 MiB fs: <superuser required>
    label: N/A uuid: N/A
  ID-8: /dev/sdd4 maj-min: 8:52 size: 152.53 GiB fs: ntfs
    label: WinPer-Backup uuid: 757E5B1A319E9E63
USB:
  Hub-1: 1-0:1 info: full speed or root hub ports: 5 rev: 1.1
    speed: 12 Mb/s (1.4 MiB/s) lanes: 1 mode: 1.1 chip-ID: 1d6b:0001
    class-ID: 0900
  Hub-2: 2-0:1 info: full speed or root hub ports: 5 rev: 2.0
    speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 chip-ID: 1d6b:0002
    class-ID: 0900
  Device-1: 2-2:2 info: Alcor Micro Flash Card Reader/Writer
    type: mass storage driver: usb-storage interfaces: 1 rev: 2.0
    speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 power: 100mA
    chip-ID: 058f:6362 class-ID: 0806 serial: <filter>
  Device-2: 2-3:3 info: JMicron / USA JMS578 SATA 6Gb/s type: mass storage
    driver: uas interfaces: 1 rev: 2.1 speed: 480 Mb/s (57.2 MiB/s) lanes: 1
    mode: 2.0 power: 500mA chip-ID: 152d:0578 class-ID: 0806 serial: <filter>
  Hub-3: 2-4:4 info: Cypress CY7C65640 USB-2.0 TetraHub ports: 2 rev: 2.0
    speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 power: 100mA
    chip-ID: 04b4:6560 class-ID: 0900
  Hub-4: 3-0:1 info: full speed or root hub ports: 5 rev: 2.0
    speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 chip-ID: 1d6b:0002
    class-ID: 0900
  Hub-5: 4-0:1 info: full speed or root hub ports: 5 rev: 1.1
    speed: 12 Mb/s (1.4 MiB/s) lanes: 1 mode: 1.1 chip-ID: 1d6b:0001
    class-ID: 0900
  Device-1: 4-3:2 info: Cambridge Silicon Radio Bluetooth Dongle (HCI mode)
    type: bluetooth driver: btusb interfaces: 2 rev: 2.0
    speed: 12 Mb/s (1.4 MiB/s) lanes: 1 mode: 1.1 power: 100mA
    chip-ID: 0a12:0001 class-ID: e001
  Device-2: 4-4:3 info: Logitech G102/G203 LIGHTSYNC Gaming Mouse
    type: mouse,HID driver: hid-generic,usbhid interfaces: 2 rev: 2.0
    speed: 12 Mb/s (1.4 MiB/s) lanes: 1 mode: 1.1 power: 300mA
    chip-ID: 046d:c092 class-ID: 0300 serial: <filter>
  Hub-6: 5-0:1 info: full speed or root hub ports: 2 rev: 1.1
    speed: 12 Mb/s (1.4 MiB/s) lanes: 1 mode: 1.1 chip-ID: 1d6b:0001
    class-ID: 0900
  Hub-7: 6-0:1 info: hi-speed hub with single TT ports: 2 rev: 2.0
    speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 chip-ID: 1d6b:0002
    class-ID: 0900
  Device-1: 6-1:2 info: Microsoft Xbox360 Controller type: <vendor specific>
    driver: xpad interfaces: 4 rev: 2.0 speed: 12 Mb/s (1.4 MiB/s) lanes: 1
    mode: 1.1 power: 500mA chip-ID: 045e:028e class-ID: ff00 serial: <filter>
  Device-2: 6-2:3 info: Megawin Gaming KB type: keyboard
    driver: hid-generic,usbhid interfaces: 2 rev: 1.1 speed: 1.5 Mb/s (183 KiB/s)
    lanes: 1 mode: 1.0 power: 100mA chip-ID: 0e6a:1620 class-ID: 0301
  Hub-8: 7-0:1 info: super-speed hub ports: 2 rev: 3.0
    speed: 5 Gb/s (596.0 MiB/s) lanes: 1 mode: 3.2 gen-1x1 chip-ID: 1d6b:0003
    class-ID: 0900
  Hub-9: 8-0:1 info: hi-speed hub with single TT ports: 2 rev: 2.0
    speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 chip-ID: 1d6b:0002
    class-ID: 0900
  Hub-10: 9-0:1 info: super-speed hub ports: 2 rev: 3.0
    speed: 5 Gb/s (596.0 MiB/s) lanes: 1 mode: 3.2 gen-1x1 chip-ID: 1d6b:0003
    class-ID: 0900
Sensors:
  System Temperatures: cpu: 62.0 C mobo: N/A gpu: nvidia temp: 41 C
  Fan Speeds (rpm): N/A gpu: nvidia fan: 39%
Info:
  Processes: 308 Power: uptime: 7h 18m states: freeze,mem,disk suspend: s2idle
    wakeups: 0 hibernate: platform avail: shutdown, reboot, suspend, test_resume
    image: 3.06 GiB services: org_kde_powerdevil, power-profiles-daemon,
    upowerd Init: systemd v: 255 default: graphical tool: systemctl
  Packages: pm: pacman pkgs: 1699 libs: 415 tools: pamac,paru,trizen,yay
    pm: flatpak pkgs: 0 Compilers: clang: 17.0.6 gcc: 14.1.1 Shell: Zsh v: 5.9
    default: Bash v: 5.2.26 running-in: konsole inxi: 3.3.34

output from echo $XDG_SESSION_TYPE && glxinfo | grep server

x11
server glx vendor string: NVIDIA Corporation
server glx version string: 1.4
server glx extensions:

okay, nvidia and x11 is working, that shouldn’t be the problem.
there is the mpv-full package in the aur that comes up with all libraries. you could try to use this to check if using all libraries solves the problem

pamac install mpv-full

or the full package with all ffmpeg statically linked

pamac install mpv-full-build-git

OK, I have tried it. Since I don’t have AUR enabled in my pamac, I just used an AUR helper paru instead.

First I installed mpv-full. It took just over 6 minutes, but unfortunately made no difference.

Then I tried the second idea and built mpv-full-build-git and that took about 42 minutes. Unfortunately again the same result, absolutely no change / improvement in the use of PlasmaTube occurred.

I have now done some more research and found out that it probably has to do with the hardware support for VP9. Then I found in the Arch Wiki that the Maxwell (GM 206) and newer support it for 8bit. But I have the Maxwell GM 107 and it does not support hardware acceleration for VP9, not even with the nVidia drivers.
So there must have been a setting somewhere (Session Manager ?!), probably for newer graphics cards, where my old one is no longer included. Because while the hardware acceleration is activated, it is required. If you turn it off, it should also work in software, right?

Last tests:
OK, now I found out that it doesn’t matter at all which profile I set for mpv. Whether I set a VP9 profile or a profile that my graphics card actually supports, it’s always the same. Problems when I close the playback window.

Not a satisfactory solution:
Then I just left the mpv window open and saw that you can play more (more than one video) and is not limited in this respect. But then I looked for an alternative because I didn’t like the way that I get two windows and that they don’t work independently of each other and found something.

Satisfying solution:
I found and tried Minitube and the program works perfectly right away without me having anything to complain about. There is no playback video in the way, but directly next to it in a single window.

1 Like

Your recommendation has helped me out too. Viewing YouTube in Firefox has been a painful experience lately, with Google delaying the start for several seconds when Firefox is used, and also constantly stopping videos every few minutes (probably where ads blocked by uBlock Origin were going to appear), requiring the page to be reloaded. I haven’t viewed a full YouTube video on Minitube yet, but hopefully it will be a much smoother (and ad-free) experience.

I cannot confirm your experience at all.
I use Firefox - with ublock origin
with default settings, changed nothing
No problems whatsoever - and: no ads
none
But this may be country dependent - IDK.

Perhaps log out, clear cache and cookies …

It may be location related, or it could also be due to one of the many Firefox extensions I have installed. But YouTube videos embedded in other sites (such as this forum) are also very slow to start (if they start at all), so I don’t think it is anything to do with any YouTube-specific add-ons I use such as Enhancer For YouTube. I’ll do some troubleshooting over the weekend. In the meantime, Minitube could be all I need.

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