In guvcview I can set up my webcam to be exactly how I want it to be. However, when I fire up Cheese or any browser-based video conferencing tool like Google Meet the camera image comes up with the initial settings.
Is there any way to make the configuration I set up in guvcview the default for all uses of the webcam?
I'm attempting to record a 1080 @ 30FPS video from a Logitech C920 webcam. Simple, right? Well, apparently not.
First, I tried on my desktop running 16.04 using Ubuntu's built-in Cheese application. The preview streams perfectly fine at 30FPS, but as soon as I start recording, the frame rate drops drastically to probably around ~15FPS (I don't know exactly since Cheese doesn't provide an FPS meter).
Next, I tried again on my desktop running 16.04 using guvcview. Unfortunately, the version in the default repos for 16.04, 2.02, has a bug which causes it to record video as a single still frame. Arghh... so then I installed 2.05 from an unofficial PPA. This solved the aforementioned bug, however, when I go to record video (using H.264 from the camera's hardware encoder) the first second or so of the video records perfectly, but then the frame rate drops to between 3 and 5 FPS.
Finally, to make sure it wasn't just a problem with my desktop, I installed guvcview version 2.05 on my laptop running 18.04, but once again, when I go to record video (using H.264 from the camera's hardware encoder) the first second or so of the video records perfectly, but then the frame rate drops to between 3 and 5 FPS.
So what the heck is going on here? Is this an issue with libuvc compatibility with the Logitech C920? I know it's not an issue of under-powered hardware, as I have a 6-core AMD CPU in my desktop and a quad-core 3rd gen i7 in my laptop.
I bought a Maozua 5mp USB microscope off Amazon (after checking in the reviews that it worked on Linux). Sadly when I connected it on Lubuntu 16.04 it does not work in guvcview or cheese.
I did some investigation. I show the relevant parts below:
ls /dev | grep video
video0
video1
The microscope is on video1 and a logitech webcam on video0. The webcam works when the microscope is not connected, but guvcview and cheese cannot retrieve video from it when the microscope is connected:
lsusb
Bus 003 Device 009: ID 0c45:6366 Microdia
more detailed info:
lsusb -v
Bus 003 Device 008: ID 0c45:6366 Microdia
Couldn't open device, some information will be missing
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 239 Miscellaneous Device
bDeviceSubClass 2 ?
bDeviceProtocol 1 Interface Association
bMaxPacketSize0 64
idVendor 0x0c45 Microdia
idProduct 0x6366
bcdDevice 1.00
iManufacturer 2
iProduct 1
iSerial 3
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 662
bNumInterfaces 2
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 500mA
Interface Association:
bLength 8
bDescriptorType 11
bFirstInterface 0
bInterfaceCount 2
bFunctionClass 14 Video
bFunctionSubClass 3 Video Interface Collection
bFunctionProtocol 0
iFunction 5
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 1 Video Control
bInterfaceProtocol 0
iInterface 5
VideoControl Interface Descriptor:
bLength 13
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdUVC 1.00
wTotalLength 108
dwClockFrequency 15.000000MHz
bInCollection 1
baInterfaceNr( 0) 1
VideoControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 5
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bSourceID 4
iTerminal 0
VideoControl Interface Descriptor:
bLength 28
bDescriptorType 36
bDescriptorSubtype 6 (EXTENSION_UNIT)
bUnitID 3
guidExtensionCode {7033f028-1163-2e4a-ba2c-6890eb334016}
bNumControl 24
bNrPins 1
baSourceID( 0) 2
bControlSize 3
bmControls( 0) 0xff
bmControls( 1) 0xff
bmControls( 2) 0xff
iExtension 0
VideoControl Interface Descriptor:
bLength 29
bDescriptorType 36
bDescriptorSubtype 6 (EXTENSION_UNIT)
bUnitID 4
guidExtensionCode {b42153bd-35d6-45ca-b203-4e0149b301bc}
bNumControl 32
bNrPins 1
baSourceID( 0) 3
bControlSize 4
bmControls( 0) 0x03
bmControls( 1) 0x80
bmControls( 2) 0x3f
bmControls( 3) 0x9f
iExtension 0
VideoControl Interface Descriptor:
bLength 18
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 1
wTerminalType 0x0201 Camera Sensor
bAssocTerminal 0
iTerminal 0
wObjectiveFocalLengthMin 0
wObjectiveFocalLengthMax 0
wOcularFocalLength 0
bControlSize 3
bmControls 0x0000000e
Auto-Exposure Mode
Auto-Exposure Priority
Exposure Time (Absolute)
VideoControl Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 5 (PROCESSING_UNIT)
Warning: Descriptor too short
bUnitID 2
bSourceID 1
wMaxMultiplier 0
bControlSize 2
bmControls 0x0000177f
Brightness
Contrast
Hue
Saturation
Sharpness
Gamma
White Balance Temperature
Backlight Compensation
Gain
Power Line Frequency
White Balance Temperature, Auto
iProcessing 0
bmVideoStandards 0x 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0010 1x 16 bytes
bInterval 6
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
VideoStreaming Interface Descriptor:
bLength 15
bDescriptorType 36
bDescriptorSubtype 1 (INPUT_HEADER)
bNumFormats 2
wTotalLength 411
bEndPointAddress 129
bmInfo 0
bTerminalLink 5
bStillCaptureMethod 2
bTriggerSupport 1
bTriggerUsage 1
bControlSize 1
bmaControls( 0) 11
bmaControls( 1) 11
VideoStreaming Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 6 (FORMAT_MJPEG)
bFormatIndex 1
bNumFrameDescriptors 5
bFlags 0
Fixed-size samples: No
bDefaultFrameIndex 1
bAspectRatioX 0
bAspectRatioY 0
bmInterlaceFlags 0x00
Interlaced stream or variable: No
Fields per frame: 1 fields
Field 1 first: No
Field pattern: Field 1 only
bCopyProtect 0
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 1
bmCapabilities 0x00
Still image unsupported
wWidth 2592
wHeight 1944
dwMinBitRate 1209323520
dwMaxBitRate 1209323520
dwMaxVideoFrameBufferSize 10078285
dwDefaultFrameInterval 666666
bFrameIntervalType 1
dwFrameInterval( 0) 666666
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 2
bmCapabilities 0x00
Still image unsupported
wWidth 2320
wHeight 1744
dwMinBitRate 971059200
dwMaxBitRate 971059200
dwMaxVideoFrameBufferSize 8092749
dwDefaultFrameInterval 666666
bFrameIntervalType 1
dwFrameInterval( 0) 666666
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 3
bmCapabilities 0x00
Still image unsupported
wWidth 2048
wHeight 1536
dwMinBitRate 754974720
dwMaxBitRate 754974720
dwMaxVideoFrameBufferSize 6292045
dwDefaultFrameInterval 666666
bFrameIntervalType 1
dwFrameInterval( 0) 666666
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 4
bmCapabilities 0x00
Still image unsupported
wWidth 1920
wHeight 1080
dwMinBitRate 497664000
dwMaxBitRate 497664000
dwMaxVideoFrameBufferSize 4147789
dwDefaultFrameInterval 666666
bFrameIntervalType 1
dwFrameInterval( 0) 666666
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 5
bmCapabilities 0x00
Still image unsupported
wWidth 1280
wHeight 1024
dwMinBitRate 314572800
dwMaxBitRate 314572800
dwMaxVideoFrameBufferSize 2622029
dwDefaultFrameInterval 666666
bFrameIntervalType 1
dwFrameInterval( 0) 666666
VideoStreaming Interface Descriptor:
bLength 26
bDescriptorType 36
bDescriptorSubtype 3 (STILL_IMAGE_FRAME)
bEndpointAddress 0
bNumImageSizePatterns 5
wWidth( 0) 2592
wHeight( 0) 1944
wWidth( 1) 2320
wHeight( 1) 1744
wWidth( 2) 2048
wHeight( 2) 1536
wWidth( 3) 1920
wHeight( 3) 1080
wWidth( 4) 1280
wHeight( 4) 1024
bNumCompressionPatterns 5
VideoStreaming Interface Descriptor:
bLength 27
bDescriptorType 36
bDescriptorSubtype 4 (FORMAT_UNCOMPRESSED)
bFormatIndex 2
bNumFrameDescriptors 5
guidFormat {59555932-0000-1000-8000-00aa00389b71}
bBitsPerPixel 16
bDefaultFrameIndex 1
bAspectRatioX 0
bAspectRatioY 0
bmInterlaceFlags 0x00
Interlaced stream or variable: No
Fields per frame: 2 fields
Field 1 first: No
Field pattern: Field 1 only
bCopyProtect 0
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 1
bmCapabilities 0x00
Still image unsupported
wWidth 2592
wHeight 1944
dwMinBitRate 161243136
dwMaxBitRate 161243136
dwMaxVideoFrameBufferSize 10077696
dwDefaultFrameInterval 5000000
bFrameIntervalType 1
dwFrameInterval( 0) 5000000
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 2
bmCapabilities 0x00
Still image unsupported
wWidth 2320
wHeight 1774
dwMinBitRate 131701760
dwMaxBitRate 131701760
dwMaxVideoFrameBufferSize 8231360
dwDefaultFrameInterval 5000000
bFrameIntervalType 1
dwFrameInterval( 0) 5000000
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 3
bmCapabilities 0x00
Still image unsupported
wWidth 2048
wHeight 1536
dwMinBitRate 150994944
dwMaxBitRate 150994944
dwMaxVideoFrameBufferSize 6291456
dwDefaultFrameInterval 3333333
bFrameIntervalType 1
dwFrameInterval( 0) 3333333
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 4
bmCapabilities 0x00
Still image unsupported
wWidth 1920
wHeight 1080
dwMinBitRate 99532800
dwMaxBitRate 99532800
dwMaxVideoFrameBufferSize 4147200
dwDefaultFrameInterval 3333333
bFrameIntervalType 1
dwFrameInterval( 0) 3333333
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 5
bmCapabilities 0x00
Still image unsupported
wWidth 1280
wHeight 1024
dwMinBitRate 104857600
dwMaxBitRate 104857600
dwMaxVideoFrameBufferSize 2621440
dwDefaultFrameInterval 2000000
bFrameIntervalType 1
dwFrameInterval( 0) 2000000
VideoStreaming Interface Descriptor:
bLength 26
bDescriptorType 36
bDescriptorSubtype 3 (STILL_IMAGE_FRAME)
bEndpointAddress 0
bNumImageSizePatterns 5
wWidth( 0) 2592
wHeight( 0) 1944
wWidth( 1) 2320
wHeight( 1) 1744
wWidth( 2) 2048
wHeight( 2) 1536
wWidth( 3) 1920
wHeight( 3) 1080
wWidth( 4) 1280
wHeight( 4) 1024
bNumCompressionPatterns 5
VideoStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 13 (COLORFORMAT)
bColorPrimaries 1 (BT.709,sRGB)
bTransferCharacteristics 1 (BT.709)
bMatrixCoefficients 4 (SMPTE 170M (BT.601))
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 1
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0080 1x 128 bytes
bInterval 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 2
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0100 1x 256 bytes
bInterval 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 3
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0320 1x 800 bytes
bInterval 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 4
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0b20 2x 800 bytes
bInterval 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 5
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x1320 3x 800 bytes
bInterval 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 6
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x1400 3x 1024 bytes
bInterval 1
I looked at the output of dmesg and found the following ominous lines:
[ 2364.670728] usb 3-2: new high-speed USB device number 8 using xhci_hcd
[ 2364.829594] usb 3-2: New USB device found, idVendor=0c45, idProduct=6366
[ 2364.829598] usb 3-2: New USB device strings: Mfr=2, Product=1, SerialNumber=3
[ 2364.829601] usb 3-2: Product: Digital microscope
[ 2364.829604] usb 3-2: Manufacturer: Sonix Technology Co., Ltd.
[ 2364.829606] usb 3-2: SerialNumber: SN0001
[ 2364.831835] uvcvideo: Found UVC 1.00 device Digital microscope (0c45:6366)
[ 2364.839225] uvcvideo 3-2:1.0: Entity type for entity Extension 4 was not initialized!
[ 2364.839229] uvcvideo 3-2:1.0: Entity type for entity Extension 3 was not initialized!
[ 2364.839232] uvcvideo 3-2:1.0: Entity type for entity Processing 2 was not initialized!
[ 2364.839235] uvcvideo 3-2:1.0: Entity type for entity Camera 1 was not initialized!
[ 2364.839369] input: Digital microscope: Digital mic as /devices/pci0000:00/0000:00:14.0/usb3/3-2/3-2:1.0/input/input20
[ 2637.035796] usb 3-2: USB disconnect, device number 8
[ 2646.208190] usb 3-2: new high-speed USB device number 9 using xhci_hcd
[ 2646.367005] usb 3-2: New USB device found, idVendor=0c45, idProduct=6366
[ 2646.367009] usb 3-2: New USB device strings: Mfr=2, Product=1, SerialNumber=3
[ 2646.367012] usb 3-2: Product: Digital microscope
[ 2646.367015] usb 3-2: Manufacturer: Sonix Technology Co., Ltd.
[ 2646.367017] usb 3-2: SerialNumber: SN0001
[ 2646.369205] uvcvideo: Found UVC 1.00 device Digital microscope (0c45:6366)
[ 2646.376527] uvcvideo 3-2:1.0: Entity type for entity Extension 4 was not initialized!
[ 2646.376531] uvcvideo 3-2:1.0: Entity type for entity Extension 3 was not initialized!
[ 2646.376534] uvcvideo 3-2:1.0: Entity type for entity Processing 2 was not initialized!
[ 2646.376536] uvcvideo 3-2:1.0: Entity type for entity Camera 1 was not initialized!
[ 2646.376672] input: Digital microscope: Digital mic as /devices/pci0000:00/0000:00:14.0/usb3/3-2/3-2:1.0/input/input21
I disconnected the Logitech webcam, to avoid interactions, and ran cheese from the console (using sudo to avoid permission problems). I saw the following output:
paul@clio:~$ sudo cheese
[sudo] password for paul:
(cheese:3520): IBUS-WARNING **: The owner of /home/paul/.config/ibus/bus is not root!
libv4l2: error turning on stream: Protocol error
(cheese:3520): cheese-WARNING **: Could not read from resource.: gstv4l2bufferpool.c(1054): gst_v4l2_buffer_pool_poll (): /GstCameraBin:camerabin/GstWrapperCameraBinSrc:camera_source/GstBin:bin18/GstV4l2Src:v4l2src1:
poll error 1: Protocol error (71)
I googled 'microdia' and '0c45:6366' and found a lot of people have struggled with this microscope. Some believe they got it working, but the solutions are spread across long threads stream-of-consciouness-wise and I have not pieced together anything that works. I noted that most of the threads are dated 2008-2009. It makes me wonder whether a working driver became available after that period - but I can't find it !
Any help will be much appreciated.
Now I have a UVC device (OPTRIS PI 160), an Infrared Thermometer. I have already read official doc that tells me to use Guvcview. I can get a video stream from the device, but now I’m just getting a green screen.
This is dmesg info:
[23832.936404] usb 1-1.2: config 1 interface 0 altsetting 0 endpoint 0x85 has an invalid bInterval 32, changing to 9
[23832.936900] usb 1-1.2: New USB device found, idVendor=0403, idProduct=de37
[23832.936901] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[23832.936902] usb 1-1.2: Product: PI-IMAGER
[23832.936903] usb 1-1.2: Manufacturer: OPTRIS
[23832.936904] usb 1-1.2: SerialNumber: 16120109
[23832.937280] uvcvideo: Found UVC 1.00 device PI-IMAGER (0403:de37)
[23832.937839] uvcvideo 1-1.2:1.0: Entity type for entity Processing 3 was not initialized!
[23832.937840] uvcvideo 1-1.2:1.0: Entity type for entity Camera 1 was not initialized!
[23832.937924] input: PI-IMAGER: PI-IMAGER as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2/1-1.2:1.0/input/input27
[23832.939033] hid-generic 0003:0403:DE37.000D: hiddev0,hidraw3: USB HID v1.10 Device [OPTRIS PI-IMAGER] on usb-0000:00:1a.0-1.2/input2
I installed guvcview, when I try to record a video, it records my voice and one single image. It does not record all the frames (images). How to solve this?