Probing devices... [0:34:30.757573032] [1287] INFO Camera camera_manager.cpp:327 libcamera v0.4.0 [0:34:30.953015567] [1290] ERROR DmaBufAllocator dma_buf_allocator.cpp:119 Could not open any dma-buf provider Device found: name : /base/soc@0/usb@4ef8800/usb@4e00000-1.4:1.0-046d:08e5 class : Source/Video caps : image/jpeg, width=160, height=90 image/jpeg, width=160, height=120 image/jpeg, width=176, height=144 image/jpeg, width=320, height=180 image/jpeg, width=320, height=240 image/jpeg, width=352, height=288 image/jpeg, width=432, height=240 image/jpeg, width=640, height=360 image/jpeg, width=640, height=480 image/jpeg, width=800, height=448 image/jpeg, width=864, height=480 image/jpeg, width=800, height=600 image/jpeg, width=1024, height=576 image/jpeg, width=960, height=720 image/jpeg, width=1280, height=720 image/jpeg, width=1600, height=896 image/jpeg, width=1920, height=1080 video/x-raw, format=YUY2, width=160, height=90 video/x-raw, format=YUY2, width=160, height=120 video/x-raw, format=YUY2, width=176, height=144 video/x-raw, format=YUY2, width=320, height=180 video/x-raw, format=YUY2, width=320, height=240 video/x-raw, format=YUY2, width=352, height=288 video/x-raw, format=YUY2, width=432, height=240 video/x-raw, format=YUY2, width=640, height=360 video/x-raw, format=YUY2, width=640, height=480 video/x-raw, format=YUY2, width=800, height=448 video/x-raw, format=YUY2, width=864, height=480 video/x-raw, format=YUY2, width=800, height=600 video/x-raw, format=YUY2, width=1024, height=576 video/x-raw, format=YUY2, width=960, height=720 video/x-raw, format=YUY2, width=1280, height=720 video/x-raw, format=YUY2, width=1600, height=896 video/x-raw, format=YUY2, width=1920, height=1080 video/x-raw, format=YUY2, width=2560, height=1472 gst-launch-1.0 libcamerasrc camera-name="/base/soc\@0/usb\@4ef8800/usb\@4e00000-1.4:1.0-046d:08e5" ! ... Device found: name : Monitor of Dummy Output class : Audio/Source caps : audio/x-raw, format={ (string)S16LE, (string)S16BE, (string)F32LE, (string)F32BE, (string)S32LE, (string)S32BE, (string)S24LE, (string)S24BE, (string)S24_32LE, (string)S24_32BE, (string)U8 }, layout=interleaved, rate=[ 1, 768000 ], channels=[ 1, 32 ] audio/x-alaw, rate=[ 1, 768000 ], channels=[ 1, 32 ] audio/x-mulaw, rate=[ 1, 768000 ], channels=[ 1, 32 ] properties: node.name = auto_null device.description = Dummy Output audio.rate = 48000 audio.channels = 2 audio.position = FL,FR media.class = Audio/Sink factory.name = support.null-audio-sink node.virtual = true monitor.channel-volumes = true factory.id = 19 clock.quantum-limit = 8192 client.id = 34 node.driver = true port.group = stream.0 node.loop.name = data-loop.0 library.name = audioconvert/libspa-audioconvert object.id = 35 object.serial = 35 device.class = monitor is-default = false gst-launch-1.0 pulsesrc device=auto_null.monitor ! ... Device found: name : C920 PRO HD Webcam Analog Stereo class : Audio/Source caps : audio/x-raw, format={ (string)S16LE, (string)S16BE, (string)F32LE, (string)F32BE, (string)S32LE, (string)S32BE, (string)S24LE, (string)S24BE, (string)S24_32LE, (string)S24_32BE, (string)U8 }, layout=interleaved, rate=[ 1, 768000 ], channels=[ 1, 32 ] audio/x-alaw, rate=[ 1, 768000 ], channels=[ 1, 32 ] audio/x-mulaw, rate=[ 1, 768000 ], channels=[ 1, 32 ] properties: alsa.card = 0 alsa.card_name = HD Pro Webcam C920 alsa.class = generic alsa.components = USB046d:08e5 alsa.device = 0 alsa.driver_name = snd_usb_audio alsa.id = USB Audio alsa.long_card_name = HD Pro Webcam C920 at usb-xhci-hcd.1.auto-1.4, high speed alsa.mixer_name = USB Mixer alsa.name = USB Audio alsa.resolution_bits = 16 alsa.subclass = generic-mix alsa.subdevice = 0 alsa.subdevice_name = subdevice #0 alsa.sync.id = 00000000:00000000:00000000:00000000 api.alsa.card.longname = HD Pro Webcam C920 at usb-xhci-hcd.1.auto-1.4, high speed api.alsa.card.name = HD Pro Webcam C920 api.alsa.path = front:0 api.alsa.pcm.card = 0 api.alsa.pcm.stream = capture audio.channels = 2 audio.position = FL,FR card.profile.device = 0 device.api = alsa device.class = sound device.icon_name = audio-card-analog device.id = 48 device.profile.description = Analog Stereo device.profile.name = analog-stereo device.routes = 1 factory.name = api.alsa.pcm.source media.class = Audio/Source device.description = C920 PRO HD Webcam node.name = alsa_input.usb-046d_HD_Pro_Webcam_C920-02.analog-stereo node.nick = HD Pro Webcam C920 node.pause-on-idle = false object.path = alsa:acp:C920:0:capture port.group = capture priority.driver = 2009 priority.session = 2009 factory.id = 19 clock.quantum-limit = 8192 client.id = 47 node.driver = true node.loop.name = data-loop.0 library.name = audioconvert/libspa-audioconvert object.id = 55 object.serial = 55 api.acp.auto-port = false api.acp.auto-profile = false api.alsa.card = 0 api.alsa.split-enable = true api.alsa.use-acp = true api.dbus.ReserveDevice1 = Audio0 api.dbus.ReserveDevice1.Priority = -20 device.bus = usb device.bus-id = usb-046d_HD_Pro_Webcam_C920-02 device.bus_path = platform-xhci-hcd.1.auto-usb-0:1.4:1.2 device.enum.api = udev device.form_factor = webcam device.name = alsa_card.usb-046d_HD_Pro_Webcam_C920-02 device.nick = HD Pro Webcam C920 device.plugged.usec = 13765943 device.product.id = 0x08e5 device.product.name = C920 PRO HD Webcam device.serial = 046d_HD_Pro_Webcam_C920 device.subsystem = sound sysfs.path = /devices/platform/soc@0/4ef8800.usb/4e00000.usb/xhci-hcd.1.auto/usb1/1-1/1-1.4/1-1.4:1.2/sound/card0 device.vendor.id = 0x046d device.vendor.name = Logitech, Inc. spa.object.id = 2 device.string = 0 is-default = true gst-launch-1.0 pulsesrc device=alsa_input.usb-046d_HD_Pro_Webcam_C920-02.analog-stereo ! ... Device found: name : Dummy Output class : Audio/Sink caps : audio/x-raw, format={ (string)S16LE, (string)S16BE, (string)F32LE, (string)F32BE, (string)S32LE, (string)S32BE, (string)S24LE, (string)S24BE, (string)S24_32LE, (string)S24_32BE, (string)U8 }, layout=interleaved, rate=[ 1, 768000 ], channels=[ 1, 32 ] audio/x-alaw, rate=[ 1, 768000 ], channels=[ 1, 32 ] audio/x-mulaw, rate=[ 1, 768000 ], channels=[ 1, 32 ] properties: node.name = auto_null device.description = Dummy Output audio.rate = 48000 audio.channels = 2 audio.position = FL,FR media.class = Audio/Sink factory.name = support.null-audio-sink node.virtual = true monitor.channel-volumes = true factory.id = 19 clock.quantum-limit = 8192 client.id = 34 node.driver = true port.group = stream.0 node.loop.name = data-loop.0 library.name = audioconvert/libspa-audioconvert object.id = 35 object.serial = 35 is-default = true gst-launch-1.0 ... ! pulsesink device=auto_null