[linux-l] Notebook-Camera steht teilweise Kopf

Thomas Kaepernick mast_1 at gmx.net
Do Mai 21 22:12:58 CEST 2020


Mit den richtigen Suchworten (asus ubuntu webcam flip) konnte die 
passende Lösungsbeschreibung gefunden werden.

Mit dem Aufruf

LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libv4l/v4l1compat.so firefox

stehe ich bei einer Videotelephonie nicht mehr kopf. (-:

Gruß Thomas


Am 19.05.20 um 21:33 schrieb Thomas Kaepernick:
> Liebe Listener,
>
> ich habe hier ein Xubuntu 18.04 LTS auf einem ASUS Notebook X5DIJ.
>
> Mit der eingebauten Webcam habe ich ein Problem. Bei einigen 
> Programmen (Cheese, Webbrowser) steht das Bild Kopf. Bei VLC aber 
> nicht. Aus der Websuche weiß ich, dass es als Treiberproblem bei 
> Windows bekannt ist und ggf. durch eine neue Treiberversion zu beheben 
> ist.
>
> Beim Einrichten der Videoaufzeichnungsfunktion im VLC wurde ich 
> anfangs nach dem Gerät gefragt und mir als Auswahl /dev/v4l angeboten. 
> Beim erneuten Aufruf des Programms ist es die Bezeichnung der Webcam 
> CNF7129. Dennoch ist das Bild beim VLC richtig herum. Bei cheese habe 
> ich diese Option nicht. Ebenso beim Webbrowser. Hier gibt es nur das 
> Gerät.
>
> Ich würde den Laptop gern für ein Webinar benutzen. Gibt es also eine 
> Möglichkeit, den beiden anderen Programmen, besonders aber Firefox, 
> beizubringen, das Bild zu drehen (=richtig herum darzustellen)?
>
> Hier noch einige Ausgaben.
>
> Ausgabe von dmesg:
>
> usb 1-3: Product: CNF7129
> uvcvideo: Found UVC 1.00 device CNF7129 (04f2:b071)
> input: CNF7129: USB2.0 1.3M UVC WebCam as 
> /devices/pci0000:00/0000:00:1a.7/usb1/1-3/1-3:1.0/input/input17
>
> Ausgabe von lsusb -t:
>
> /:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/6p, 480M
>     |__ Port 3: Dev 2, If 0, Class=Video, Driver=uvcvideo, 480M
>     |__ Port 3: Dev 2, If 1, Class=Video, Driver=uvcvideo, 480M
>
> Ausgabe von usb-devices:
>
> T:  Bus=01 Lev=01 Prnt=01 Port=02 Cnt=01 Dev#=  2 Spd=480 MxCh= 0
> D:  Ver= 2.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs=  1
> P:  Vendor=04f2 ProdID=b071 Rev=15.15
> S:  Manufacturer=Chicony Electronics Co., Ltd.
> S:  Product=CNF7129
> S:  SerialNumber=SN0001
> C:  #Ifs= 2 Cfg#= 1 Atr=80 MxPwr=500mA
> I:  If#= 0 Alt= 0 #EPs= 1 Cls=0e(video) Sub=01 Prot=00 Driver=uvcvideo
> I:  If#= 1 Alt= 0 #EPs= 0 Cls=0e(video) Sub=02 Prot=00 Driver=uvcvideo
>
> Ausgabe von lsusb -s 001:002 -v
>
> Bus 001 Device 002: ID 04f2:b071 Chicony Electronics Co., Ltd 2.0M UVC 
> Webcam / CNF7129
> Device Descriptor:
>   bLength                18
>   bDescriptorType         1
>   bcdUSB               2.00
>   bDeviceClass          239 Miscellaneous Device
>   bDeviceSubClass         2 ?
>   bDeviceProtocol         1 Interface Association
>   bMaxPacketSize0        64
>   idVendor           0x04f2 Chicony Electronics Co., Ltd
>   idProduct          0xb071 2.0M UVC Webcam / CNF7129
>   bcdDevice           15.15
>   iManufacturer           2 Chicony Electronics Co., Ltd.
>   iProduct                1 CNF7129
>   iSerial                 3 SN0001
>   bNumConfigurations      1
>   Configuration Descriptor:
>     bLength                 9
>     bDescriptorType         2
>     wTotalLength          592
>     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 USB2.0 1.3M UVC WebCam
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        0
>       bAlternateSetting       0
>       bNumEndpoints           1
>       bInterfaceClass        14 Video
>       bInterfaceSubClass      1 Video Control
>       bInterfaceProtocol      0
>       iInterface              5 USB2.0 1.3M UVC WebCam
>       VideoControl Interface Descriptor:
>         bLength                13
>         bDescriptorType        36
>         bDescriptorSubtype      1 (HEADER)
>         bcdUVC               1.00
>         wTotalLength          104
>         dwClockFrequency       15.000000MHz
>         bInCollection           1
>         baInterfaceNr( 0)       1
>       VideoControl Interface Descriptor:
>         bLength                 9
>         bDescriptorType        36
>         bDescriptorSubtype      3 (OUTPUT_TERMINAL)
>         bTerminalID             2
>         wTerminalType      0x0101 USB Streaming
>         bAssocTerminal          0
>         bSourceID               5
>         iTerminal               0
>       VideoControl Interface Descriptor:
>         bLength                26
>         bDescriptorType        36
>         bDescriptorSubtype      6 (EXTENSION_UNIT)
>         bUnitID                 4
>         guidExtensionCode {7033f028-1163-2e4a-ba2c-6890eb334016}
>         bNumControl             8
>         bNrPins                 1
>         baSourceID( 0)          3
>         bControlSize            1
>         bmControls( 0)       0x0f
>         iExtension              0
>       VideoControl Interface Descriptor:
>         bLength                26
>         bDescriptorType        36
>         bDescriptorSubtype      6 (EXTENSION_UNIT)
>         bUnitID                 5
>         guidExtensionCode {3fae1228-d7bc-114e-a357-6f1edef7d61d}
>         bNumControl             8
>         bNrPins                 1
>         baSourceID( 0)          4
>         bControlSize            1
>         bmControls( 0)       0xff
>         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           0x00000000
>       VideoControl Interface Descriptor:
>         bLength                12
>         bDescriptorType        36
>         bDescriptorSubtype      5 (PROCESSING_UNIT)
>       Warning: Descriptor too short
>         bUnitID                 3
>         bSourceID               1
>         wMaxMultiplier          0
>         bControlSize            3
>         bmControls     0x0000377f
>           Brightness
>           Contrast
>           Hue
>           Saturation
>           Sharpness
>           Gamma
>           White Balance Temperature
>           Backlight Compensation
>           Gain
>           Power Line Frequency
>           White Balance Temperature, Auto
>           White Balance Component, Auto
>         iProcessing             0
>         bmVideoStandards     0x41
>           None
>       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                            14
>         bDescriptorType                    36
>         bDescriptorSubtype                  1 (INPUT_HEADER)
>         bNumFormats                         1
>         wTotalLength                      345
>         bEndPointAddress                  129
>         bmInfo                              0
>         bTerminalLink                       2
>         bStillCaptureMethod                 0
>         bTriggerSupport                     1
>         bTriggerUsage                       0
>         bControlSize                        1
>         bmaControls( 0)                    27
>       VideoStreaming Interface Descriptor:
>         bLength                            27
>         bDescriptorType                    36
>         bDescriptorSubtype                  4 (FORMAT_UNCOMPRESSED)
>         bFormatIndex                        1
>         bNumFrameDescriptors                7
>         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                            46
>         bDescriptorType                    36
>         bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
>         bFrameIndex                         1
>         bmCapabilities                   0x00
>           Still image unsupported
>         wWidth                            640
>         wHeight                           480
>         dwMinBitRate                  3072000
>         dwMaxBitRate                 18432000
>         dwMaxVideoFrameBufferSize      614400
>         dwDefaultFrameInterval         333333
>         bFrameIntervalType                  5
>         dwFrameInterval( 0)            333333
>         dwFrameInterval( 1)            500000
>         dwFrameInterval( 2)            666666
>         dwFrameInterval( 3)           1000000
>         dwFrameInterval( 4)           2000000
>       VideoStreaming Interface Descriptor:
>         bLength                            46
>         bDescriptorType                    36
>         bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
>         bFrameIndex                         2
>         bmCapabilities                   0x00
>           Still image unsupported
>         wWidth                            352
>         wHeight                           288
>         dwMinBitRate                  1013760
>         dwMaxBitRate                  6082560
>         dwMaxVideoFrameBufferSize      202752
>         dwDefaultFrameInterval         333333
>         bFrameIntervalType                  5
>         dwFrameInterval( 0)            333333
>         dwFrameInterval( 1)            500000
>         dwFrameInterval( 2)            666666
>         dwFrameInterval( 3)           1000000
>         dwFrameInterval( 4)           2000000
>       VideoStreaming Interface Descriptor:
>         bLength                            46
>         bDescriptorType                    36
>         bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
>         bFrameIndex                         3
>         bmCapabilities                   0x00
>           Still image unsupported
>         wWidth                            320
>         wHeight                           240
>         dwMinBitRate                   768000
>         dwMaxBitRate                  4608000
>         dwMaxVideoFrameBufferSize      153600
>         dwDefaultFrameInterval         333333
>         bFrameIntervalType                  5
>         dwFrameInterval( 0)            333333
>         dwFrameInterval( 1)            500000
>         dwFrameInterval( 2)            666666
>         dwFrameInterval( 3)           1000000
>         dwFrameInterval( 4)           2000000
>       VideoStreaming Interface Descriptor:
>         bLength                            46
>         bDescriptorType                    36
>         bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
>         bFrameIndex                         4
>         bmCapabilities                   0x00
>           Still image unsupported
>         wWidth                            176
>         wHeight                           144
>         dwMinBitRate                   253440
>         dwMaxBitRate                  1520640
>         dwMaxVideoFrameBufferSize       50688
>         dwDefaultFrameInterval         333333
>         bFrameIntervalType                  5
>         dwFrameInterval( 0)            333333
>         dwFrameInterval( 1)            500000
>         dwFrameInterval( 2)            666666
>         dwFrameInterval( 3)           1000000
>         dwFrameInterval( 4)           2000000
>       VideoStreaming Interface Descriptor:
>         bLength                            46
>         bDescriptorType                    36
>         bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
>         bFrameIndex                         5
>         bmCapabilities                   0x00
>           Still image unsupported
>         wWidth                            160
>         wHeight                           120
>         dwMinBitRate                   192000
>         dwMaxBitRate                  1152000
>         dwMaxVideoFrameBufferSize       38400
>         dwDefaultFrameInterval         333333
>         bFrameIntervalType                  5
>         dwFrameInterval( 0)            333333
>         dwFrameInterval( 1)            500000
>         dwFrameInterval( 2)            666666
>         dwFrameInterval( 3)           1000000
>         dwFrameInterval( 4)           2000000
>       VideoStreaming Interface Descriptor:
>         bLength                            34
>         bDescriptorType                    36
>         bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
>         bFrameIndex                         6
>         bmCapabilities                   0x00
>           Still image unsupported
>         wWidth                           1280
>         wHeight                           800
>         dwMinBitRate                 10240000
>         dwMaxBitRate                 14336000
>         dwMaxVideoFrameBufferSize     2048000
>         dwDefaultFrameInterval        1428571
>         bFrameIntervalType                  2
>         dwFrameInterval( 0)           1428571
>         dwFrameInterval( 1)           2000000
>       VideoStreaming Interface Descriptor:
>         bLength                            34
>         bDescriptorType                    36
>         bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
>         bFrameIndex                         7
>         bmCapabilities                   0x00
>           Still image unsupported
>         wWidth                           1280
>         wHeight                          1024
>         dwMinBitRate                 13107200
>         dwMaxBitRate                 18350080
>         dwMaxVideoFrameBufferSize     2621440
>         dwDefaultFrameInterval        1428571
>         bFrameIntervalType                  2
>         dwFrameInterval( 0)           1428571
>         dwFrameInterval( 1)           2000000
>       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
> Device Qualifier (for other device speed):
>   bLength                10
>   bDescriptorType         6
>   bcdUSB               2.00
>   bDeviceClass          239 Miscellaneous Device
>   bDeviceSubClass         2 ?
>   bDeviceProtocol         1 Interface Association
>   bMaxPacketSize0        64
>   bNumConfigurations      1
> Device Status:     0x0002
>   (Bus Powered)
>   Remote Wakeup Enabled
>
-- 
Mit freundlichen Grüßen

Thomas Kaepernick



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