Pages : 1
#1 Le 10/06/2025, à 17:37
- PierreBM
Problème webcam
J'ai, depuis pas mal d'années, une webcam (ITworks HD 720P) qui a très bien fonctionné jusqu'à 24.04
Elle est toujours reconnue par lsusb,
$ lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 04ca:0050 Lite-On Technology Corp. USB Multimedia Keyboard
Bus 001 Device 004: ID 0461:4e2b Primax Electronics, Ltd USB Optical Mouse
Bus 001 Device 005: ID 05e3:0608 Genesys Logic, Inc. Hub
Bus 001 Device 006: ID 054c:05bf Sony Corp. Hard Drive
Bus 001 Device 008: ID 14cd:8601 Super Top 4-Port hub
Bus 001 Device 014: ID 0c45:6340 Microdia Camera
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
et produit une image en couleur mais ... totalement floue.
Initialement je l'utilisais avec Cheese, désormais c'est avec Camera/Snapshot
Le test disponible dans Snapshot me donne ce qui suit
Library Details:
Aperture 0.6.0
GStreamer 1.24.2
Pipewire 1.0.5
Gtk 4.14.2
Cameras:
USB 2.0 Camera (V4L2) Video/Source: {
"clock.quantum-limit": (gchararray) "8192",
"api.v4l2.cap.device-caps": (gchararray) "04200001",
"node.driver": (gchararray) "true",
"device.product.id": (gchararray) "0x634",
"device.vendor.id": (gchararray) "0x0c4",
"media.class": (gchararray) "Video/Source",
"device.api": (gchararray) "v4l2",
"object.path": (gchararray) "v4l2:/dev/video0",
"node.name": (gchararray) "v4l2_input.pci-0000_00_14.0-usb-0_3_1.0",
"factory.id": (gchararray) "10",
"api.v4l2.cap.capabilities": (gchararray) "84a00001",
"device.id": (gchararray) "72",
"media.role": (gchararray) "Camera",
"node.nick": (gchararray) "USB 2.0 Camera",
"client.id": (gchararray) "35",
"factory.name": (gchararray) "api.v4l2.source",
"node.description": (gchararray) "USB 2.0 Camera (V4L2)",
"object.id": (gchararray) "68",
"api.v4l2.cap.card": (gchararray) "USB 2.0 Camera: HD 720P Webcam",
"object.serial": (gchararray) "141",
"node.pause-on-idle": (gchararray) "false",
"api.v4l2.cap.driver": (gchararray) "uvcvideo",
"device.devids": (gchararray) "20736",
"api.v4l2.path": (gchararray) "/dev/video0",
"api.v4l2.cap.bus_info": (gchararray) "usb-0000:00:14.0-3",
"api.v4l2.cap.version": (gchararray) "6.8.12",
"priority.session": (gchararray) "1000",}
Une idée pour avancer ? Merci d'avance
Micro-Star International Co., Ltd. MS-7D48
12th Gen Intel® Core™ i3-12100 × 8
Ubuntu 24.04.2 LTS
Carte graphique Intel® UHD Graphics 730 (ADL-S GT1)
Hors ligne
#2 Le 10/06/2025, à 17:58
- xubu1957
Re : Problème webcam
Bonjour,
Tu devrais essayer avec guvcview.
Conseils pour les nouveaux demandeurs et pas qu'eux
Important : Pensez à passer vos sujets en [Réso|u] lorsque ceux-ci le sont, au début du titre en cliquant sur Modifier sous le premier message, et un bref récapitulatif de la solution à la fin de celui-ci. Merci. Membre de Linux-Azur
En ligne
#3 Le 19/06/2025, à 18:21
- PierreBM
Re : Problème webcam
Le problème persiste, malgré les sophistication de réglage proposées par guvcview. L'image retournée est fluide mais reste floue, exactement comme avec cheese.
Merci quand même pour le tuyau
Micro-Star International Co., Ltd. MS-7D48
12th Gen Intel® Core™ i3-12100 × 8
Ubuntu 24.04.2 LTS
Carte graphique Intel® UHD Graphics 730 (ADL-S GT1)
Hors ligne
#4 Le 20/06/2025, à 12:56
- Turinghz
Re : Problème webcam
Salut,
Je suivais le fil, j’ai eu un souci assez proche (webcam floue subitement après mise à jour).
Je ne sais pas si c’est exactement la même cause, mais dans mon cas ce n’était pas les paquets cassés, c’était un problème de résolution forcée.
Tu as essayé de lancer ta webcam avec `v4l2-ctl` pour voir les résolutions disponibles ?
Tu peux tenter un truc du genre :
v4l2-ctl --list-formats-ext -d /dev/video0Puis forcer manuellement une résolution qui passe bien avec `qv4l2`, ou directement dans Cheese en modifiant un profil.
Tu as tenté avec OBS ou Firefox pour voir si ça vient vraiment du système ou juste de Cheese/Snapshot ?
J’irais aussi jeter un œil du côté de Firefox ou d’un outil comme OBS Studio, juste pour comparer l’image de la webcam ailleurs que dans Cheese ou Snapshot.
Par exemple, en allant sur un site comme https://webcammictest.com/ (ou même meet.jit.si) via Firefox, tu peux tester la caméra sans rien installer.
OBS, si tu l’as, permet aussi d’ajouter la webcam en source vidéo. Si c’est toujours flou, au moins tu seras fixé.
Ça permettra de voir si le souci vient vraiment du système ou juste du logiciel utilisé pour la prévisualisation.
Hors ligne
#5 Le 20/06/2025, à 13:39
- steph810
Re : Problème webcam
Bonjour,
je rejoind @Turinghz vois avec v412-ctl
v4l2-ctl --device=/dev/video0 --list-ctrlsRegarde si le focus est sur auto.
Mon exemple si activer value=1
focus_automatic_continuous 0x009a090c (bool) : default=1 value=1pour desactiver:
v4l2-ctl --device=/dev/video0 --set-ctrl=focus_automatic_continuous=0puis reglage manuel focus:
v4l2-ctl --device=/dev/video0 --set-ctrl=focus_absolute=120luminosité:
v4l2-ctl --set-ctrl=brightness=70Faites des test et changer la valeur.
Dernière modification par steph810 (Le 20/06/2025, à 13:40)
Hors ligne
#6 Le 23/06/2025, à 17:33
- PierreBM
Re : Problème webcam
voilà les retours :
$ v4l2-ctl --device=/dev/video0 --list-ctrls
User Controls
brightness 0x00980900 (int) : min=-64 max=64 step=1 default=0 value=0
contrast 0x00980901 (int) : min=0 max=64 step=1 default=32 value=32
saturation 0x00980902 (int) : min=1 max=128 step=1 default=77 value=77
hue 0x00980903 (int) : min=-40 max=40 step=1 default=-2 value=-2
gamma 0x00980910 (int) : min=72 max=500 step=1 default=100 value=100
gain 0x00980913 (int) : min=0 max=100 step=1 default=0 value=0
power_line_frequency 0x00980918 (menu) : min=0 max=2 default=1 value=1 (50 Hz)
sharpness 0x0098091b (int) : min=0 max=6 step=1 default=3 value=3
backlight_compensation 0x0098091c (int) : min=0 max=2 step=1 default=1 value=1et
$ v4l2-ctl --device=/dev/video0 --set-ctrl=focus_automatic_continuous=0
unknown control 'focus_automatic_continuous'
Comme tu peux voir il n'y est pas question de focus là dedans. Donc pour le régler ça va être coton
Micro-Star International Co., Ltd. MS-7D48
12th Gen Intel® Core™ i3-12100 × 8
Ubuntu 24.04.2 LTS
Carte graphique Intel® UHD Graphics 730 (ADL-S GT1)
Hors ligne
#7 Le 25/06/2025, à 15:50
- PierreBM
Re : Problème webcam
Par la commande lsusb -v j'ai accès à plus d'informations :
Bus 001 Device 010: ID 0c45:6340 Microdia Camera
Couldn't open device, some information will be missing
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 239 Miscellaneous Device
bDeviceSubClass 2 [unknown]
bDeviceProtocol 1 Interface Association
bMaxPacketSize0 64
idVendor 0x0c45 Microdia
idProduct 0x6340 Camera
bcdDevice 0.00
iManufacturer 2 Sonix Technology Co., Ltd.
iProduct 1 USB 2.0 Camera
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x042d
bNumInterfaces 4
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 0x004d
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 4
iTerminal 0
VideoControl Interface Descriptor:
bLength 26
bDescriptorType 36
bDescriptorSubtype 6 (EXTENSION_UNIT)
bUnitID 4
guidExtensionCode {28f03370-6311-4a2e-ba2c-6890eb334016}
bNumControls 8
bNrInPins 1
baSourceID( 0) 3
bControlSize 1
bmControls( 0) 0x0f
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 11
bDescriptorType 36
bDescriptorSubtype 5 (PROCESSING_UNIT)
Warning: Descriptor too short
bUnitID 3
bSourceID 1
wMaxMultiplier 0
bControlSize 2
bmControls 0x0000073f
Brightness
Contrast
Hue
Saturation
Sharpness
Gamma
Backlight Compensation
Gain
Power Line Frequency
iProcessing 0
bmVideoStandards 0x59
None
SECAM - 625/50
NTSC - 625/50
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 5
VideoStreaming Interface Descriptor:
bLength 14
bDescriptorType 36
bDescriptorSubtype 1 (INPUT_HEADER)
bNumFormats 1
wTotalLength 0x02d1
bEndpointAddress 0x81 EP 1 IN
bmInfo 0
bTerminalLink 2
bStillCaptureMethod 2
bTriggerSupport 1
bTriggerUsage 1
bControlSize 1
bmaControls( 0) 0
VideoStreaming Interface Descriptor:
bLength 27
bDescriptorType 36
bDescriptorSubtype 4 (FORMAT_UNCOMPRESSED)
bFormatIndex 1
bNumFrameDescriptors 18
guidFormat {32595559-0000-0010-8000-00aa00389b71}
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 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 1
bmCapabilities 0x00
Still image unsupported
wWidth 640
wHeight 480
dwMinBitRate 73728000
dwMaxBitRate 147456000
dwMaxVideoFrameBufferSize 614400
dwDefaultFrameInterval 333333
bFrameIntervalType 2
dwFrameInterval( 0) 333333
dwFrameInterval( 1) 666666
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 2
bmCapabilities 0x00
Still image unsupported
wWidth 640
wHeight 360
dwMinBitRate 55296000
dwMaxBitRate 110592000
dwMaxVideoFrameBufferSize 460800
dwDefaultFrameInterval 333333
bFrameIntervalType 2
dwFrameInterval( 0) 333333
dwFrameInterval( 1) 666666
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 3
bmCapabilities 0x00
Still image unsupported
wWidth 544
wHeight 288
dwMinBitRate 37601280
dwMaxBitRate 75202560
dwMaxVideoFrameBufferSize 313344
dwDefaultFrameInterval 333333
bFrameIntervalType 2
dwFrameInterval( 0) 333333
dwFrameInterval( 1) 666666
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 4
bmCapabilities 0x00
Still image unsupported
wWidth 432
wHeight 240
dwMinBitRate 24883200
dwMaxBitRate 49766400
dwMaxVideoFrameBufferSize 207360
dwDefaultFrameInterval 333333
bFrameIntervalType 2
dwFrameInterval( 0) 333333
dwFrameInterval( 1) 666666
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 5
bmCapabilities 0x00
Still image unsupported
wWidth 352
wHeight 288
dwMinBitRate 24330240
dwMaxBitRate 48660480
dwMaxVideoFrameBufferSize 202752
dwDefaultFrameInterval 333333
bFrameIntervalType 2
dwFrameInterval( 0) 333333
dwFrameInterval( 1) 666666
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 6
bmCapabilities 0x00
Still image unsupported
wWidth 320
wHeight 240
dwMinBitRate 18432000
dwMaxBitRate 36864000
dwMaxVideoFrameBufferSize 153600
dwDefaultFrameInterval 333333
bFrameIntervalType 2
dwFrameInterval( 0) 333333
dwFrameInterval( 1) 666666
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 7
bmCapabilities 0x00
Still image unsupported
wWidth 320
wHeight 176
dwMinBitRate 13516800
dwMaxBitRate 27033600
dwMaxVideoFrameBufferSize 112640
dwDefaultFrameInterval 333333
bFrameIntervalType 2
dwFrameInterval( 0) 333333
dwFrameInterval( 1) 666666
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 8
bmCapabilities 0x00
Still image unsupported
wWidth 176
wHeight 144
dwMinBitRate 6082560
dwMaxBitRate 12165120
dwMaxVideoFrameBufferSize 50688
dwDefaultFrameInterval 333333
bFrameIntervalType 2
dwFrameInterval( 0) 333333
dwFrameInterval( 1) 666666
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 9
bmCapabilities 0x00
Still image unsupported
wWidth 160
wHeight 120
dwMinBitRate 4608000
dwMaxBitRate 9216000
dwMaxVideoFrameBufferSize 38400
dwDefaultFrameInterval 333333
bFrameIntervalType 2
dwFrameInterval( 0) 333333
dwFrameInterval( 1) 666666
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 10
bmCapabilities 0x00
Still image unsupported
wWidth 752
wHeight 416
dwMinBitRate 50053120
dwMaxBitRate 100106240
dwMaxVideoFrameBufferSize 625664
dwDefaultFrameInterval 500000
bFrameIntervalType 2
dwFrameInterval( 0) 500000
dwFrameInterval( 1) 1000000
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 11
bmCapabilities 0x00
Still image unsupported
wWidth 800
wHeight 448
dwMinBitRate 57344000
dwMaxBitRate 114688000
dwMaxVideoFrameBufferSize 716800
dwDefaultFrameInterval 500000
bFrameIntervalType 2
dwFrameInterval( 0) 500000
dwFrameInterval( 1) 1000000
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 12
bmCapabilities 0x00
Still image unsupported
wWidth 864
wHeight 480
dwMinBitRate 66355200
dwMaxBitRate 132710400
dwMaxVideoFrameBufferSize 829440
dwDefaultFrameInterval 500000
bFrameIntervalType 2
dwFrameInterval( 0) 500000
dwFrameInterval( 1) 1000000
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 13
bmCapabilities 0x00
Still image unsupported
wWidth 800
wHeight 600
dwMinBitRate 76800000
dwMaxBitRate 153600000
dwMaxVideoFrameBufferSize 960000
dwDefaultFrameInterval 500000
bFrameIntervalType 2
dwFrameInterval( 0) 500000
dwFrameInterval( 1) 1000000
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 14
bmCapabilities 0x00
Still image unsupported
wWidth 960
wHeight 544
dwMinBitRate 83558400
dwMaxBitRate 167116800
dwMaxVideoFrameBufferSize 1044480
dwDefaultFrameInterval 500000
bFrameIntervalType 2
dwFrameInterval( 0) 500000
dwFrameInterval( 1) 1000000
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 15
bmCapabilities 0x00
Still image unsupported
wWidth 1024
wHeight 576
dwMinBitRate 141557760
dwMaxBitRate 141557760
dwMaxVideoFrameBufferSize 1179648
dwDefaultFrameInterval 666666
bFrameIntervalType 1
dwFrameInterval( 0) 666666
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 16
bmCapabilities 0x00
Still image unsupported
wWidth 960
wHeight 720
dwMinBitRate 165888000
dwMaxBitRate 165888000
dwMaxVideoFrameBufferSize 1382400
dwDefaultFrameInterval 666666
bFrameIntervalType 1
dwFrameInterval( 0) 666666
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 17
bmCapabilities 0x00
Still image unsupported
wWidth 1184
wHeight 656
dwMinBitRate 124272640
dwMaxBitRate 124272640
dwMaxVideoFrameBufferSize 1553408
dwDefaultFrameInterval 1000000
bFrameIntervalType 1
dwFrameInterval( 0) 1000000
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 18
bmCapabilities 0x00
Still image unsupported
wWidth 1280
wHeight 720
dwMinBitRate 147456000
dwMaxBitRate 147456000
dwMaxVideoFrameBufferSize 1843200
dwDefaultFrameInterval 1000000
bFrameIntervalType 1
dwFrameInterval( 0) 1000000
VideoStreaming Interface Descriptor:
bLength 78
bDescriptorType 36
bDescriptorSubtype 3 (STILL_IMAGE_FRAME)
bEndpointAddress 0x00 EP 0 OUT
bNumImageSizePatterns 18
wWidth( 0) 1280
wHeight( 0) 720
wWidth( 1) 1184
wHeight( 1) 656
wWidth( 2) 960
wHeight( 2) 720
wWidth( 3) 1024
wHeight( 3) 576
wWidth( 4) 960
wHeight( 4) 544
wWidth( 5) 800
wHeight( 5) 600
wWidth( 6) 864
wHeight( 6) 480
wWidth( 7) 800
wHeight( 7) 448
wWidth( 8) 752
wHeight( 8) 416
wWidth( 9) 640
wHeight( 9) 480
wWidth(10) 640
wHeight(10) 360
wWidth(11) 544
wHeight(11) 288
wWidth(12) 432
wHeight(12) 240
wWidth(13) 352
wHeight(13) 288
wWidth(14) 320
wHeight(14) 240
wWidth(15) 320
wHeight(15) 176
wWidth(16) 176
wHeight(16) 144
wWidth(17) 160
wHeight(17) 120
bNumCompressionPatterns 0
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
Interface Association:
bLength 8
bDescriptorType 11
bFirstInterface 2
bInterfaceCount 2
bFunctionClass 1 Audio
bFunctionSubClass 0 [unknown]
bFunctionProtocol 0
iFunction 4
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 1 Control Device
bInterfaceProtocol 0
iInterface 4
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdADC 1.00
wTotalLength 0x0029
bInCollection 1
baInterfaceNr(0) 3
AudioControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 1
wTerminalType 0x0201 Microphone
bAssocTerminal 0
bNrChannels 1
wChannelConfig 0x0000
iChannelNames 0
iTerminal 0
AudioControl Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 2
bSourceID 1
bControlSize 2
bmaControls(0) 0x0001
Mute Control
bmaControls(1) 0x0002
Volume Control
iFeature 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 3
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bSourceID 2
iTerminal 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 3
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 3
bAlternateSetting 1
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioStreaming Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 3
bDelay 1 frames
wFormatTag 0x0001 PCM
AudioStreaming Interface Descriptor:
bLength 29
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 1
bSubframeSize 2
bBitResolution 16
bSamFreqType 7 Discrete
tSamFreq[ 0] 8000
tSamFreq[ 1] 11025
tSamFreq[ 2] 16000
tSamFreq[ 3] 22050
tSamFreq[ 4] 24000
tSamFreq[ 5] 44100
tSamFreq[ 6] 48000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x84 EP 4 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0190 1x 400 bytes
bInterval 4
bRefresh 0
bSynchAddress 0
AudioStreaming Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x01
Sampling Frequency
bLockDelayUnits 0 Undefined
wLockDelay 0x0000mais je n'y comprends rien, faute de spécialisation de ma part.
Quelqu'un réussirait à y voir plus clair ?
Micro-Star International Co., Ltd. MS-7D48
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