OBS on Ubuntu 22.04 crashes on startup

stevenwbuehler

stevenwbuehler

New Member
The SNAP version of OBS seems to work okay, but the APT version of OBS crashes on startup.

I am also unable to start a stream when trying to use Intel QSV hardware encoding:


16:26:31.782: CPU Name: 11th Gen Intel(R) Core(TM) i7-1165G7 @ 2.80GHz 16:26:31.782: CPU Speed: 2800.000MHz 16:26:31.802: Physical Cores: 4, Logical Cores: 8 16:26:31.802: Physical Memory: 31749MB Total, 4442MB Free 16:26:31.802: Kernel Version: Linux 5.15.0-48-generic 16:26:31.802: Distribution: "Ubuntu" "22.04" 16:26:31.802: Session Type: wayland 16:26:31.802: Window System: X11.0, Vendor: The X.Org Foundation, Version: 1.22.1 16:26:31.803: Qt Version: 5.15.3 (runtime), 5.15.2 (compiled) 16:26:31.803: Portable mode: false 16:26:31.842: OBS 27.2.3+dfsg1-1 (linux) 16:26:31.842: --------------------------------- 16:26:31.883: --------------------------------- 16:26:31.883: audio settings reset: 16:26:31.883: samples per sec: 48000 16:26:31.883: speakers: 2 16:26:31.888: --------------------------------- 16:26:31.888: Initializing OpenGL... 16:26:31.916: Loading up OpenGL on adapter Intel Mesa Intel(R) Xe Graphics (TGL GT2) 16:26:31.916: OpenGL loaded successfully, version 4.6 (Core Profile) Mesa 22.0.5, shading language 4.60 16:26:31.927: --------------------------------- 16:26:31.927: video settings reset: 16:26:31.927: base resolution: 1920x1080 16:26:31.927: output resolution: 1920x1080 16:26:31.927: downscale filter: Bicubic 16:26:31.927: fps: 60/1 16:26:31.927: format: NV12 16:26:31.927: YUV mode: 709/Partial 16:26:31.927: NV12 texture support not available 16:26:31.933: Audio monitoring device: 16:26:31.933: name: Default 16:26:31.933: id: default 16:26:31.934: --------------------------------- 16:26:31.934: Failed to load 'en-US' text for module: 'decklink-captions.so' 16:26:31.935: Failed to load 'en-US' text for module: 'decklink-ouput-ui.so' 16:26:31.960: A DeckLink iterator could not be created. The DeckLink drivers may not be installed 16:26:31.960: No blackmagic support 16:26:32.015: os_dlopen(libnvidia-encode.so.1->libnvidia-encode.so.1): libnvidia-encode.so.1: cannot open shared object file: No such file or directory 16:26:32.015: 16:26:32.015: FFMPEG VAAPI supported 16:26:32.023: [vlc-video]: VLC 3.0.16 Vetinari found, VLC video source enabled 16:26:32.023: --------------------------------- 16:26:32.023: Loaded Modules: 16:26:32.023: vlc-video.so 16:26:32.023: text-freetype2.so 16:26:32.023: rtmp-services.so 16:26:32.023: obs-x264.so 16:26:32.023: obs-transitions.so 16:26:32.023: obs-outputs.so 16:26:32.023: obs-filters.so 16:26:32.023: obs-ffmpeg.so 16:26:32.023: linux-v4l2.so 16:26:32.023: linux-pulseaudio.so 16:26:32.023: linux-jack.so 16:26:32.023: linux-decklink.so 16:26:32.023: linux-capture.so 16:26:32.023: linux-alsa.so 16:26:32.023: image-source.so 16:26:32.023: frontend-tools.so 16:26:32.023: decklink-ouput-ui.so 16:26:32.023: decklink-captions.so 16:26:32.023: --------------------------------- 16:26:32.023: ==== Startup complete =============================================== 16:26:32.073: All scene data cleared 16:26:32.073: ------------------------------------------------ 16:26:32.083: pulse-input: Server name: 'pulseaudio 15.99.1' 16:26:32.085: pulse-input: Audio format: s16le, 48000 Hz, 2 channels 16:26:32.085: pulse-input: Started recording from 'alsa_output.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__hw_sofhdadsp__sink.monitor' 16:26:32.085: [Loaded global audio device]: 'Desktop Audio' 16:26:32.560: pulse-input: Server name: 'pulseaudio 15.99.1' 16:26:32.560: pulse-input: Audio format: s16le, 48000 Hz, 2 channels 16:26:32.560: pulse-input: Started recording from 'alsa_input.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__hw_sofhdadsp_6__source' 16:26:32.560: [Loaded global audio device]: 'Mic/Aux' 16:26:32.561: [Media Source 'Remote Printer Cam']: settings: 16:26:32.561: input: rtsp://raspberrypi:8554/printer-cam 16:26:32.561: input_format: 16:26:32.561: speed: 100 16:26:32.561: is_looping: no 16:26:32.561: is_linear_alpha: no 16:26:32.561: is_hw_decoding: no 16:26:32.561: is_clear_on_media_end: yes 16:26:32.561: restart_on_activate: yes 16:26:32.561: close_when_inactive: no 16:26:32.561: Switched to scene 'Scene' 16:26:32.561: ------------------------------------------------ 16:26:32.561: Loaded scenes: 16:26:32.561: - scene 'Scene': 16:26:32.561: - source: 'Remote Printer Cam' (ffmpeg_source) 16:26:32.561: - source: 'Black Upper Third' (color_source_v3) 16:26:32.561: - source: 'Upper Third Text' (text_ft2_source_v2) 16:26:32.561: ------------------------------------------------ 16:26:33.107: adding 42 milliseconds of audio buffering, total audio buffering is now 42 milliseconds (source: Mic/Aux) 16:26:33.107: 16:26:37.833: --------------------------------- 16:26:37.833: [FFMPEG VAAPI encoder: 'streaming_h264'] settings: 16:26:37.833: device: /dev/dri/by-path/pci-0000:00:02.0-render 16:26:37.833: rate_control: CBR 16:26:37.833: profile: 100 16:26:37.833: level: 42 16:26:37.833: qp: 0 16:26:37.833: bitrate: 5000 16:26:37.833: maxrate: 5000 16:26:37.833: keyint: 120 16:26:37.833: width: 1920 16:26:37.833: height: 1080 16:26:37.833: b-frames: 0 16:26:37.833: 16:26:37.835: [FFMPEG VAAPI encoder: 'streaming_h264'] Failed to open VAAPI codec: Invalid argument 16:26:37.836: Stream output type 'rtmp_output' failed to start! 16:27:38.650: Settings changed (outputs) 16:27:38.650: ------------------------------------------------ 16:27:47.018: Settings changed (outputs) 16:27:47.018: ------------------------------------------------ 16:27:49.235: --------------------------------- 16:27:49.235: [FFMPEG VAAPI encoder: 'streaming_h264'] settings: 16:27:49.235: device: /dev/dri/by-path/pci-0000:00:02.0-render 16:27:49.235: rate_control: CBR 16:27:49.235: profile: 578 16:27:49.235: level: 40 16:27:49.235: qp: 0 16:27:49.235: bitrate: 5000 16:27:49.235: maxrate: 5000 16:27:49.235: keyint: 120 16:27:49.235: width: 1920 16:27:49.235: height: 1080 16:27:49.235: b-frames: 0 16:27:49.235: 16:27:49.236: [FFMPEG VAAPI encoder: 'streaming_h264'] Failed to open VAAPI codec: Invalid argument 16:27:49.237: Stream output type 'rtmp_output' failed to start! 16:28:00.575: --------------------------------- 16:28:00.576: [FFMPEG VAAPI encoder: 'streaming_h264'] settings: 16:28:00.576: device: /dev/dri/by-path/pci-0000:00:02.0-render 16:28:00.576: rate_control: CBR 16:28:00.576: profile: 578 16:28:00.576: level: 40 16:28:00.576: qp: 0 16:28:00.576: bitrate: 5000 16:28:00.576: maxrate: 5000 16:28:00.576: keyint: 120 16:28:00.576: width: 1920 16:28:00.576: height: 1080 16:28:00.576: b-frames: 0 16:28:00.576: 16:28:00.577: [FFMPEG VAAPI encoder: 'streaming_h264'] Failed to open VAAPI codec: Invalid argument 16:28:00.577: Stream output type 'rtmp_output' failed to start!
 
L

Len Inkster

New Member
This appears to be an issue with modprobe.
Before starting the virtual camera try this in a terminal

sudo modprobe -r v4l2loopback

OBS will then ask you to authenticate when you start the virtual camera. Unfortunately, every time you stop the virtual camera, it seems to hang onto the camera drivers and won't let the virtual camera restart without repeating this command and authentication.

At least you don't have to reboot in between each use of OBS.

Looking for a more permanent solution, with report back when I've found it.
 
stevenwbuehler

stevenwbuehler

New Member
```
22:48:56.535: User enabled --multi flag and is now running multiple instances of OBS.
22:48:56.535: Command Line Arguments: --multi
22:48:56.535: Platform: Wayland
22:48:56.535: CPU Name: 11th Gen Intel(R) Core(TM) i7-1165G7 @ 2.80GHz
22:48:56.535: CPU Speed: 4156.604MHz
22:48:56.536: Physical Cores: 4, Logical Cores: 8
22:48:56.536: Physical Memory: 31748MB Total, 29315MB Free
22:48:56.536: Kernel Version: Linux 5.19.0-21-generic
22:48:56.536: Distribution: "Ubuntu Core" "20"
22:48:56.536: Session Type: wayland
22:48:56.536: Portable mode: false
22:48:56.602: OBS 27.1.3-modified (linux)
22:48:56.602: ---------------------------------
22:48:56.602: ---------------------------------
22:48:56.602: audio settings reset:
22:48:56.602: samples per sec: 48000
22:48:56.602: speakers: 2
22:48:56.607: ---------------------------------
22:48:56.607: Initializing OpenGL...
22:48:56.607: Using EGL/Wayland
22:48:56.699: Initialized EGL 1.5
22:48:56.711: Loading up OpenGL on adapter Intel Mesa Intel(R) Xe Graphics (TGL GT2)
22:48:56.711: OpenGL loaded successfully, version 4.6 (Core Profile) Mesa 21.0.3, shading language 4.60
22:48:56.732: ---------------------------------
22:48:56.732: video settings reset:
22:48:56.732: base resolution: 1920x1080
22:48:56.732: output resolution: 1920x1080
22:48:56.732: downscale filter: Bicubic
22:48:56.732: fps: 30/1
22:48:56.732: format: NV12
22:48:56.732: YUV mode: 709/Partial
22:48:56.732: NV12 texture support not available
22:48:56.736: Audio monitoring device:
22:48:56.736: name: Default
22:48:56.736: id: default
22:48:56.736: ---------------------------------
22:48:56.750: [StreamFX] Loading Version 0.11.0.0c1-g2d7fce5a
22:48:56.753: [StreamFX] <gfx::opengl> Version 4.6 initialized.
22:48:56.766: [StreamFX] Loaded Version 0.11.0.0c1-g2d7fce5a
22:48:56.800: [adv-ss] version: 1.16.5
22:48:56.800: [adv-ss] version: 82da6b32175081a3c8ca9c3aeed267999f460dcb
22:48:56.803: [adv-ss] curl loaded successfully
22:48:56.803: [adv-ss] found curl library
22:48:56.804: Failed to load 'en-US' text for module: 'decklink-captions.so'
22:48:56.805: Failed to load 'en-US' text for module: 'decklink-ouput-ui.so'
22:48:56.807: [Downstream Keyer] loaded version 0.2.1
22:48:56.814: [Freeze Filter] loaded version 0.3.2
22:48:56.898: [Gradient Source] loaded version 0.2.0
22:48:56.933: Failed to load 'en-US' text for module: 'liblooking-glass-obs.so'
22:48:56.937: [pango]: Loaded system fontconfig
22:48:56.948: [pipewire] Available captures:
22:48:56.948: [pipewire] - Desktop capture
22:48:56.948: [pipewire] - Window capture
22:48:56.950: A DeckLink iterator could not be created. The DeckLink drivers may not be installed
22:48:56.950: No blackmagic support
22:48:56.966: [linux-vkcapture] plugin loaded successfully (version 1.1.0)
22:48:56.966: [linux-vkcapture] Cannot bind unix socket to : 13
22:48:56.967: [Move Transition] loaded version 2.5.2
22:48:56.968: os_dlopen(libnvidia-fbc.so.1->libnvidia-fbc.so.1): libnvidia-fbc.so.1: cannot open shared object file: No such file or directory
22:48:56.968:
22:48:56.968: Unable to load NvFBC library
22:48:56.968: Failed to initialize module 'nvfbc.so'
22:48:56.969: Failed to load 'en-US' text for module: 'obs-audio-pan-filter.so'
22:48:56.969: [obs-audio-pan-filter] plugin loaded successfully (version 0.1.2)
22:48:56.977: Failed to load 'en-US' text for module: 'obs-backgroundremoval.so'
22:48:56.977: [obs-backgroundremoval] plugin loaded successfully (version 0.4.0)
22:48:56.980: [obs-browser]: Version 2.16.3
22:48:56.980: [obs-browser]: CEF Version 87.1.14+ga29e9a3+chromium-87.0.4280.141
22:48:56.988: os_dlopen(libnvidia-encode.so.1->libnvidia-encode.so.1): libnvidia-encode.so.1: cannot open shared object file: No such file or directory
22:48:56.988:
22:48:56.988: FFMPEG VAAPI supported
22:48:56.992: Failed to load 'en-US' text for module: 'obs-gphoto.so'
22:48:56.998: obs-gstreamer build: 219a629
22:48:57.275: [obs-ndi] hello ! (version 4.9.1)
22:48:57.275: [obs-ndi] Trying ''
22:48:57.275: [obs-ndi] Trying '/usr/lib'
22:48:57.275: [obs-ndi] Trying '/usr/local/lib'
22:48:57.275: [obs-ndi] Found NDI library at '/usr/local/lib/libndi.so.4'
22:48:57.280: [obs-ndi] NDI runtime loaded successfully
22:48:57.281: [obs-ndi] NDI library initialized successfully (NDI SDK LINUX 18:32:11 Jun 30 2020 4.5.3)
22:48:57.352: Failed to load 'en-US' text for module: 'obs-vnc.so'
22:48:57.352: [obs-vnc] plugin loaded successfully (version 0.4.0)
22:48:57.358: [obs-websocket] you can haz websockets (version 4.9.1)
22:48:57.358: [obs-websocket] qt version (compile-time): 5.15.2 ; qt version (run-time): 5.15.2
22:48:57.361: [obs-websocket] module loaded!
22:48:57.363: [Replay Source] loaded version 1.6.9
22:48:57.367: [Source Copy] loaded version 0.1.3
22:48:57.368: [Source Record] loaded version 0.2.6
22:48:57.368: [Source Switcher] loaded version 0.3.0
22:48:57.371: [spectralizer] Loading v1.3.2 build time 2021.12.20 11:59
22:48:57.372: [TimeWarpScan] loaded version 0.1.6
22:48:57.373: [Transition Table] loaded version 0.2.2
22:48:57.375: VLC found, VLC video source enabled
22:48:57.375: ---------------------------------
22:48:57.375: Loaded Modules:
22:48:57.375: vlc-video.so
22:48:57.375: transition-table.so
22:48:57.375: time-warp-scan.so
22:48:57.375: text-freetype2.so
22:48:57.375: spectralizer.so
22:48:57.375: source-switcher.so
22:48:57.375: source-record.so
22:48:57.375: source-copy.so
22:48:57.375: sndio.so
22:48:57.375: scale-to-sound.so
22:48:57.375: rtmp-services.so
22:48:57.375: replay-source.so
22:48:57.375: recursion-effect.so
22:48:57.375: obs-x264.so
22:48:57.375: obs-websocket.so
22:48:57.375: obs-vst.so
22:48:57.375: obs-vnc.so
22:48:57.375: obs-transitions.so
22:48:57.375: obs-rtspserver.so
22:48:57.375: obs-rgb-levels-filter.so
22:48:57.375: obs-outputs.so
22:48:57.375: obs-ndi.so
22:48:57.375: obs-libfdk.so
22:48:57.375: obs-gstreamer.so
22:48:57.375: obs-gphoto.so
22:48:57.375: obs-filters.so
22:48:57.375: obs-ffmpeg.so
22:48:57.375: obs-browser.so
22:48:57.375: obs-backgroundremoval.so
22:48:57.375: obs-audio-pan-filter.so
22:48:57.375: nvfbc.so
22:48:57.375: move-transition.so
22:48:57.375: linux-vkcapture.so
22:48:57.375: linux-v4l2.so
22:48:57.375: linux-pulseaudio.so
22:48:57.375: linux-jack.so
22:48:57.375: linux-decklink.so
22:48:57.375: linux-capture.so
22:48:57.375: linux-alsa.so
22:48:57.375: libtext-pango.so
22:48:57.375: liblooking-glass-obs.so
22:48:57.375: image-source.so
22:48:57.375: gradient-source.so
22:48:57.375: frontend-tools.so
22:48:57.375: freeze-filter.so
22:48:57.375: dynamic-delay.so
22:48:57.375: dvd-screensaver.so
22:48:57.375: downstream-keyer.so
22:48:57.375: dir-watch-media.so
22:48:57.375: decklink-ouput-ui.so
22:48:57.375: decklink-captions.so
22:48:57.375: advanced-scene-switcher.so
22:48:57.375: StreamFX.so
22:48:57.375: ---------------------------------
22:48:57.375: ==== Startup complete ===============================================
22:48:57.381: All scene data cleared
22:48:57.381: ------------------------------------------------
22:48:57.388: pulse-input: Server name: 'PulseAudio (on PipeWire 0.3.58) 15.0.0'
22:48:57.388: pulse-input: Audio format: s32le, 48000 Hz, 2 channels
22:48:57.389: pulse-input: Started recording from 'alsa_output.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__hw_sofhdadsp__sink.monitor'
22:48:57.389: [Loaded global audio device]: 'Desktop Audio'
22:48:57.389: pulse-input: Server name: 'PulseAudio (on PipeWire 0.3.58) 15.0.0'
22:48:57.389: pulse-input: Audio format: s16le, 48000 Hz, 1 channels
22:48:57.389: pulse-input: Started recording from 'alsa_input.usb-Amba_Insta360_One_R-02.mono-fallback'
22:48:57.389: [Loaded global audio device]: 'Mic/Aux'
22:48:57.390: Switched to scene 'Scene'
22:48:57.392: [adv-ss] trying to reconnect to in 10 seconds.
22:48:57.393: ------------------------------------------------
22:48:57.393: Loaded scenes:
22:48:57.393: - scene 'Scene':
22:48:57.393: ------------------------------------------------
22:48:57.393: [adv-ss] started
22:48:57.999: [adv-ss] detected busy loop - refusing to sleep less than 1ms
22:48:58.335: adding 64 milliseconds of audio buffering, total audio buffering is now 64 milliseconds (source: Desktop Audio)
22:48:58.335:
22:48:59.598: [obs-websocket] WSServer::start: Not locked to IPv4 bindings
22:48:59.599: [obs-websocket] server started successfully on port 4444
22:48:59.600: [obs-websocket] IO thread started.
22:58:25.095: Settings changed (outputs)
22:58:25.095: ------------------------------------------------
22:58:31.576: v4l2-input: Start capture from
22:58:31.576: v4l2-input: Unable to open device
22:58:31.576: v4l2-input: Initialization failed
22:58:31.581: User added source 'Video Capture Device (V4L2)' (v4l2_input) to scene 'Scene'
22:58:31.587: v4l2-input: /dev/video3 seems to not support video capture
22:58:31.587: v4l2-input: /dev/video1 seems to not support video capture
22:58:31.588: v4l2-input: Found device 'Insta360 One R: Insta360 One R' at /dev/video2
22:58:31.708: v4l2-input: Found device 'HP TrueVision HD Camera: HP Tru' at /dev/video0
22:58:31.709: v4l2-input: Found input 'Camera 1' (Index 0)
22:58:31.710: v4l2-input: Pixelformat: Motion-JPEG (unavailable)
22:58:31.710: v4l2-input: Pixelformat: RGB3 (Emulated) (unavailable)
22:58:31.710: v4l2-input: Pixelformat: BGR3 (Emulated) (available)
22:58:31.710: v4l2-input: Pixelformat: YU12 (Emulated) (available)
22:58:31.710: v4l2-input: Pixelformat: YV12 (Emulated) (available)
22:58:31.710: v4l2-input: Stepwise and Continuous framesizes are currently hardcoded
22:58:31.711: v4l2-input: Stepwise and Continuous framerates are currently hardcoded
22:58:31.713: v4l2-input: Pixelformat: Motion-JPEG (unavailable)
22:58:31.713: v4l2-input: Pixelformat: RGB3 (Emulated) (unavailable)
22:58:31.713: v4l2-input: Pixelformat: BGR3 (Emulated) (available)
22:58:31.713: v4l2-input: Pixelformat: YU12 (Emulated) (available)
22:58:31.713: v4l2-input: Pixelformat: YV12 (Emulated) (available)
22:58:31.714: v4l2-input: Stepwise and Continuous framesizes are currently hardcoded
22:58:31.714: v4l2-input: Stepwise and Continuous framerates are currently hardcoded
22:58:31.716: v4l2-input: Stepwise and Continuous framerates are currently hardcoded
22:58:31.736: v4l2-input: Start capture from /dev/video2
22:58:31.737: v4l2-input: Input: 0
22:58:31.738: v4l2-input: Resolution: 1920x1080
22:58:31.738: v4l2-input: Pixelformat: BGR3
22:58:31.738: v4l2-input: Linesize: 5760 Bytes
22:58:31.738: v4l2-input: Framerate: 30.00 fps
22:58:31.739: v4l2-input: /dev/video2: select timeout set to 166666us (5x frame periods)
22:58:31.907: v4l2-input: /dev/video2: select timed out
22:58:31.907: v4l2-input: /dev/video2: failed to log status
22:58:32.074: v4l2-input: /dev/video2: select timed out
22:58:32.074: v4l2-input: /dev/video2: failed to log status
22:58:32.242: v4l2-input: /dev/video2: select timed out
22:58:32.242: v4l2-input: /dev/video2: failed to log status
22:58:32.408: v4l2-input: /dev/video2: select timed out
22:58:32.409: v4l2-input: /dev/video2: failed to log status
22:58:32.576: v4l2-input: /dev/video2: select timed out
22:58:32.576: v4l2-input: /dev/video2: failed to log status
22:58:32.743: v4l2-input: /dev/video2: select timed out
22:58:32.743: v4l2-input: /dev/video2: failed to log status
22:58:32.910: v4l2-input: /dev/video2: select timed out
22:58:32.910: v4l2-input: /dev/video2: failed to log status
22:58:33.077: v4l2-input: /dev/video2: select timed out
22:58:33.077: v4l2-input: /dev/video2: failed to log status
22:58:33.244: v4l2-input: /dev/video2: select timed out
22:58:33.244: v4l2-input: /dev/video2: failed to log status
23:00:10.265: Settings changed (outputs)
23:00:10.265: ------------------------------------------------
23:00:28.371: ---------------------------------
23:00:28.371: video settings reset:
23:00:28.371: base resolution: 1920x1080
23:00:28.371: output resolution: 1920x1080
23:00:28.371: downscale filter: Bicubic
23:00:28.371: fps: 30/1
23:00:28.371: format: NV12
23:00:28.371: YUV mode: 709/Partial
23:00:28.372: NV12 texture support not available
23:00:28.372: Settings changed (advanced)
23:00:28.372: ------------------------------------------------
23:00:32.276: ---------------------------------
23:00:32.276: [FFMPEG VAAPI encoder: 'streaming_h264'] settings:
23:00:32.276: device: /dev/dri/renderD128
23:00:32.276: rate_control: CBR
23:00:32.276: profile: 578
23:00:32.276: level: 40
23:00:32.276: qp: 0
23:00:32.276: bitrate: 4000
23:00:32.276: maxrate: 4000
23:00:32.276: keyint: 60
23:00:32.276: width: 1920
23:00:32.276: height: 1080
23:00:32.276: b-frames: 0
23:00:32.276:
23:00:32.279: [FFMPEG VAAPI encoder: 'streaming_h264'] Failed to create VAAPI device context: Input/output error
23:00:32.280: Stream output type 'rtmp_output' failed to start!
```
 
F

fersdt

New Member
Len Inkster said:
This appears to be an issue with modprobe.
Before starting the virtual camera try this in a terminal

sudo modprobe -r v4l2loopback

OBS will then ask you to authenticate when you start the virtual camera. Unfortunately, every time you stop the virtual camera, it seems to hang onto the camera drivers and won't let the virtual camera restart without repeating this command and authentication.

At least you don't have to reboot in between each use of OBS.

Looking for a more permanent solution, with report back when I've found it.
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Thanks a lot for your help!! That's work for me :-)
I hope we are able to find a better solution in the future :-)
 
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