Hi linux-uvc-developers,
I have a LC2131 laptop (same as Zareason Strata Pro 13 and ASI SP13R).
It comes with a Syntek UVC webcam built-in.
It usually works fine, but certain applications fail to use it
properly like jitsi / linphone / ekiga / gstreamer-properties / cheese
I'm running Debian stable with a customized 3.0.12 kernel. Attached
are the logs of the problems experienced.
Basically everytime I want to use the webcam with jitsi, it fails.
Furthermore it leaves the webcam in a "bizarre" state and cheese /
gstreamer-propertoies fails to access it.
Cheese usually segfaults with the message:
libv4l2: error setting pixformat: Input/output error
Jitsi logs show the following messages:
00:24:47.070 SEVERE:
impl.neomedia.device.MediaDeviceImpl.createCaptureDevice().129 Failed
to create CaptureDevice from CaptureDeviceInfo USB Camera Device
(/dev/video0) : video4linux2:/dev/video0
AVFRAME, class net.java.sip.communicator.impl.neomedia.codec.video.AVFrame,
pixFmt= 1
javax.media.NoDataSourceException: Error instantiating class:
net.java.sip.communicator.impl.neomedia.jmfext.media.protocol.video4linux2.DataSource
: java.io.IOException: ioctl: request= VIDIOC_S_FMT, width= 640,
height= 480, pixelformat= 1448695129
Hope this helps to debug this problem. Jitsi is not the only program
that makes the webcam behave strangely. Ekiga and linphone screw it up
too...or perhaps the driver needs tweaking? I haven't had trouble
using the webcam with google video browser plugin though.
Let me know if you need more info
Thanks
Andres
[ 6538.635591] uvcvideo: Dropping payload (out of sync).
[ 6538.637539] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QBUF)
[ 6538.637560] uvcvideo: Queuing buffer 1.
[ 6538.637839] uvcvideo: uvc_v4l2_poll
[ 6538.639508] uvcvideo: Dropping payload (out of sync).
[ 6538.831416] uvcvideo: Frame complete (EOF found).
[ 6538.831530] uvcvideo: Dropping payload (out of sync).
[ 6538.831573] uvcvideo: uvc_v4l2_poll
[ 6538.831596] uvcvideo: uvc_v4l2_ioctl(VIDIOC_DQBUF)
[ 6538.831615] uvcvideo: Dequeuing buffer 0 (4, 2621440 bytes).
[ 6538.911346] uvcvideo: Dropping payload (out of sync).
[ 6538.922333] uvcvideo: uvc_v4l2_poll
[ 6538.928184] uvcvideo: uvc_v4l2_ioctl(VIDIOC_STREAMOFF)
[ 6539.015699] uvcvideo: uvc_v4l2_release
[ 6541.742726] uvcvideo: Suspending interface 1
[ 6541.742736] uvcvideo: Suspending interface 0
[ 7796.617935] uvcvideo: uvc_v4l2_open
[ 7796.655638] uvcvideo: Resuming interface 0
[ 7796.655649] uvcvideo: Resuming interface 1
[ 7796.661880] uvcvideo: uvc_v4l2_ioctl(VIDIOC_G_FMT)
[ 7796.662433] uvcvideo: uvc_v4l2_ioctl(VIDIOC_S_FMT)
[ 7796.662450] uvcvideo: Trying format 0x56595559 (YUYV): 640x480.
[ 7796.662459] uvcvideo: Using default frame interval 33333.3 us (30.0 fps).
[ 7801.656920] uvcvideo: Failed to query (130) UVC probe control : -110 (exp.
26).
[ 7801.657136] uvcvideo: uvc_v4l2_release
[ 7809.361359] uvcvideo: Suspending interface 1
[ 7809.361370] uvcvideo: Suspending interface 0
[ 7817.240198] uvcvideo: uvc_v4l2_open
[ 7817.310508] uvcvideo: Resuming interface 0
[ 7817.310512] uvcvideo: Resuming interface 1
[ 7817.310932] uvcvideo: uvc_v4l2_ioctl(VIDIOC_G_FMT)
[ 7817.310950] uvcvideo: uvc_v4l2_ioctl(VIDIOC_S_FMT)
[ 7817.310957] uvcvideo: Trying format 0x56595559 (YUYV): 320x240.
[ 7817.310961] uvcvideo: Using default frame interval 33333.3 us (30.0 fps).
[ 7822.305418] uvcvideo: Failed to query (130) UVC probe control : -110 (exp.
26).
[ 7822.305523] uvcvideo: uvc_v4l2_release
[ 7829.335633] uvcvideo: Suspending interface 1
[ 7829.335639] uvcvideo: Suspending interface 0
[ 7858.608041] uvcvideo: uvc_v4l2_open
[ 7858.647250] uvcvideo: Resuming interface 0
[ 7858.647255] uvcvideo: Resuming interface 1
[ 7858.647397] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCAP)
[ 7858.647407] uvcvideo: uvc_v4l2_ioctl(VIDIOC_G_FMT)
[ 7858.647425] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FMT)
[ 7858.647430] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES)
[ 7858.647435] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES)
[ 7858.647439] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES)
[ 7858.647444] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES)
[ 7858.647448] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES)
[ 7858.647452] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES)
[ 7858.647457] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES)
[ 7858.647461] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FMT)
[ 7858.647465] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCAP)
[ 7858.647473] uvcvideo: uvc_v4l2_ioctl(VIDIOC_G_INPUT)
[ 7858.647478] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUMINPUT)
[ 7858.648016] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648041] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCAP)
[ 7858.648050] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUMINPUT)
[ 7858.648127] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUMINPUT)
[ 7858.648136] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUMSTD)
[ 7858.648141] uvcvideo: Unsupported ioctl 0xc0485619
[ 7858.648145] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648173] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648180] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648186] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648192] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648197] uvcvideo: Control 0x00980904 not found.
[ 7858.648200] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648204] uvcvideo: Control 0x00980905 not found.
[ 7858.648207] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648211] uvcvideo: Control 0x00980906 not found.
[ 7858.648214] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648218] uvcvideo: Control 0x00980907 not found.
[ 7858.648221] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648225] uvcvideo: Control 0x00980908 not found.
[ 7858.648228] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648232] uvcvideo: Control 0x00980909 not found.
[ 7858.648235] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648239] uvcvideo: Control 0x0098090a not found.
[ 7858.648241] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648246] uvcvideo: Control 0x0098090b not found.
[ 7858.648248] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648254] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648259] uvcvideo: Control 0x0098090d not found.
[ 7858.648261] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648266] uvcvideo: Control 0x0098090e not found.
[ 7858.648268] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648272] uvcvideo: Control 0x0098090f not found.
[ 7858.648275] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648281] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648286] uvcvideo: Control 0x00980911 not found.
[ 7858.648288] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648293] uvcvideo: Control 0x00980912 not found.
[ 7858.648295] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648301] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648305] uvcvideo: Control 0x00980914 not found.
[ 7858.648308] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648312] uvcvideo: Control 0x00980915 not found.
[ 7858.648315] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648319] uvcvideo: Control 0x00980916 not found.
[ 7858.648322] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648326] uvcvideo: Control 0x00980917 not found.
[ 7858.648329] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648334] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648338] uvcvideo: Control 0x00980919 not found.
[ 7858.648341] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648346] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648352] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648357] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648361] uvcvideo: Control 0x0098091d not found.
[ 7858.648364] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648368] uvcvideo: Control 0x0098091e not found.
[ 7858.648371] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648375] uvcvideo: Control 0x0098091f not found.
[ 7858.648378] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648382] uvcvideo: Control 0x00980920 not found.
[ 7858.648385] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648389] uvcvideo: Control 0x00980921 not found.
[ 7858.648391] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7858.648396] uvcvideo: Control 0x08000000 not found.
[ 7858.648423] uvcvideo: uvc_v4l2_ioctl(VIDIOC_G_STD)
[ 7858.648427] uvcvideo: Unsupported ioctl 0x80085617
[ 7858.648432] uvcvideo: uvc_v4l2_ioctl(VIDIOC_G_INPUT)
[ 7858.648549] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FMT)
[ 7858.648583] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.648596] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.648671] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.648682] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.648709] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.648719] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.648744] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.648755] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.648779] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.648789] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.648814] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.648824] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.648880] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.648891] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.648916] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.648926] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.648950] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.648960] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.648984] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.648994] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649019] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649029] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649053] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649063] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649107] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649119] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649142] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649152] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649174] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649185] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649206] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649217] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649238] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649249] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649271] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649282] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649321] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649331] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649354] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649364] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649390] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649402] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649426] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649437] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649460] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649471] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649495] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649507] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649548] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES)
[ 7858.649556] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649567] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649587] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES)
[ 7858.649595] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649645] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649668] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES)
[ 7858.649676] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649685] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649703] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES)
[ 7858.649710] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649719] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649737] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES)
[ 7858.649744] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649752] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649770] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES)
[ 7858.649777] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649786] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7858.649804] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES)
[ 7858.652720] uvcvideo: uvc_v4l2_release
[ 7859.237139] uvcvideo: uvc_v4l2_open
[ 7859.237170] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCAP)
[ 7859.237180] uvcvideo: uvc_v4l2_ioctl(VIDIOC_G_FMT)
[ 7859.237190] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FMT)
[ 7859.237195] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES)
[ 7859.237199] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES)
[ 7859.237204] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES)
[ 7859.237208] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES)
[ 7859.237213] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES)
[ 7859.237217] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES)
[ 7859.237221] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES)
[ 7859.237225] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FMT)
[ 7859.237229] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCAP)
[ 7859.237235] uvcvideo: uvc_v4l2_ioctl(VIDIOC_G_INPUT)
[ 7859.237240] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUMINPUT)
[ 7859.237609] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237627] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCAP)
[ 7859.237635] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUMINPUT)
[ 7859.237647] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUMINPUT)
[ 7859.237652] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUMSTD)
[ 7859.237657] uvcvideo: Unsupported ioctl 0xc0485619
[ 7859.237660] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237668] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237674] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237679] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237685] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237690] uvcvideo: Control 0x00980904 not found.
[ 7859.237693] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237697] uvcvideo: Control 0x00980905 not found.
[ 7859.237700] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237704] uvcvideo: Control 0x00980906 not found.
[ 7859.237707] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237711] uvcvideo: Control 0x00980907 not found.
[ 7859.237714] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237718] uvcvideo: Control 0x00980908 not found.
[ 7859.237721] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237725] uvcvideo: Control 0x00980909 not found.
[ 7859.237728] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237732] uvcvideo: Control 0x0098090a not found.
[ 7859.237735] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237739] uvcvideo: Control 0x0098090b not found.
[ 7859.237742] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237748] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237752] uvcvideo: Control 0x0098090d not found.
[ 7859.237755] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237759] uvcvideo: Control 0x0098090e not found.
[ 7859.237762] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237766] uvcvideo: Control 0x0098090f not found.
[ 7859.237769] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237775] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237779] uvcvideo: Control 0x00980911 not found.
[ 7859.237782] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237786] uvcvideo: Control 0x00980912 not found.
[ 7859.237789] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237795] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237799] uvcvideo: Control 0x00980914 not found.
[ 7859.237802] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237806] uvcvideo: Control 0x00980915 not found.
[ 7859.237809] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237813] uvcvideo: Control 0x00980916 not found.
[ 7859.237816] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237820] uvcvideo: Control 0x00980917 not found.
[ 7859.237823] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237828] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237832] uvcvideo: Control 0x00980919 not found.
[ 7859.237835] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237840] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237846] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237851] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237856] uvcvideo: Control 0x0098091d not found.
[ 7859.237858] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237863] uvcvideo: Control 0x0098091e not found.
[ 7859.237865] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237870] uvcvideo: Control 0x0098091f not found.
[ 7859.237872] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237877] uvcvideo: Control 0x00980920 not found.
[ 7859.237879] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237883] uvcvideo: Control 0x00980921 not found.
[ 7859.237886] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL)
[ 7859.237890] uvcvideo: Control 0x08000000 not found.
[ 7859.237903] uvcvideo: uvc_v4l2_ioctl(VIDIOC_G_STD)
[ 7859.237907] uvcvideo: Unsupported ioctl 0x80085617
[ 7859.237912] uvcvideo: uvc_v4l2_ioctl(VIDIOC_G_INPUT)
[ 7859.238748] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FMT)
[ 7859.238786] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.238802] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.238842] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.238854] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.238881] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.238892] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.238916] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.238926] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.238950] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.238995] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239025] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239036] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239088] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239098] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239123] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239133] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239156] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239166] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239190] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239200] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239224] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239234] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239258] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239268] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239310] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239321] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239344] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239354] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239376] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239386] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239413] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239424] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239446] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239456] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239478] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239489] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239528] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239540] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239565] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239576] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239600] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239611] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239634] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239646] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239669] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239680] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239704] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239715] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239754] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES)
[ 7859.239762] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239772] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239791] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES)
[ 7859.239799] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239807] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239825] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES)
[ 7859.239833] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239841] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239859] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES)
[ 7859.239866] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239875] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239892] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES)
[ 7859.239899] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239908] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239925] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES)
[ 7859.239932] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239941] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMEINTERVALS)
[ 7859.239970] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES)
[ 7859.308854] uvcvideo: uvc_v4l2_ioctl(VIDIOC_S_FMT)
[ 7859.308863] uvcvideo: Trying format 0x56595559 (YUYV): 1280x1024.
[ 7859.308868] uvcvideo: Using default frame interval 125000.0 us (8.0 fps).
[ 7864.303596] uvcvideo: Failed to query (130) UVC probe control : -110 (exp.
26).
[ 7868.600686] uvcvideo: uvc_v4l2_release
[ 7873.547182] uvcvideo: uvc_v4l2_open
[ 7873.547250] uvcvideo: uvc_v4l2_ioctl(VIDIOC_G_FMT)
[ 7873.547267] uvcvideo: uvc_v4l2_ioctl(VIDIOC_S_FMT)
[ 7873.547309] uvcvideo: uvc_v4l2_release
[ 7876.288587] uvcvideo: Suspending interface 1
[ 7876.288593] uvcvideo: Suspending interface 0
Bus 002 Device 003: ID 174f:1420 Syntek
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 239 Miscellaneous Device
bDeviceSubClass 2 ?
bDeviceProtocol 1 Interface Association
bMaxPacketSize0 64
idVendor 0x174f Syntek
idProduct 0x1420
bcdDevice 7.05
iManufacturer 1
iProduct 2
iSerial 3
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 435
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 4
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 1 Video Control
bInterfaceProtocol 0
iInterface 4
VideoControl Interface Descriptor:
bLength 13
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdUVC 1.00
wTotalLength 51
dwClockFrequency 30.000000MHz
bInCollection 1
baInterfaceNr( 0) 1
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 0x00040000
Privacy
VideoControl Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 5 (PROCESSING_UNIT)
Warning: Descriptor too short
bUnitID 3
bSourceID 1
wMaxMultiplier 400
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 9
None
SECAM - 625/50
VideoControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 5
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bSourceID 3
iTerminal 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0008 1x 8 bytes
bInterval 9
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 4
VideoStreaming Interface Descriptor:
bLength 14
bDescriptorType 36
bDescriptorSubtype 1 (INPUT_HEADER)
bNumFormats 1
wTotalLength 257
bEndPointAddress 130
bmInfo 0
bTerminalLink 5
bStillCaptureMethod 2
bTriggerSupport 1
bTriggerUsage 0
bControlSize 1
bmaControls( 0) 27
VideoStreaming Interface Descriptor:
bLength 27
bDescriptorType 36
bDescriptorSubtype 4 (FORMAT_UNCOMPRESSED)
bFormatIndex 1
bNumFrameDescriptors 6
guidFormat
{59555932-0000-1000-8000-00aa00389b71}
bBitsPerPixel 16
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 5 (FRAME_UNCOMPRESSED)
bFrameIndex 1
bmCapabilities 0x00
Still image unsupported
wWidth 640
wHeight 480
dwMinBitRate 147456000
dwMaxBitRate 147456000
dwMaxVideoFrameBufferSize 614400
dwDefaultFrameInterval 333333
bFrameIntervalType 1
dwFrameInterval( 0) 333333
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 2
bmCapabilities 0x00
Still image unsupported
wWidth 160
wHeight 120
dwMinBitRate 9216000
dwMaxBitRate 9216000
dwMaxVideoFrameBufferSize 38400
dwDefaultFrameInterval 333333
bFrameIntervalType 1
dwFrameInterval( 0) 333333
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 3
bmCapabilities 0x00
Still image unsupported
wWidth 176
wHeight 144
dwMinBitRate 12165120
dwMaxBitRate 12165120
dwMaxVideoFrameBufferSize 50688
dwDefaultFrameInterval 333333
bFrameIntervalType 1
dwFrameInterval( 0) 333333
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 4
bmCapabilities 0x00
Still image unsupported
wWidth 320
wHeight 240
dwMinBitRate 36864000
dwMaxBitRate 36864000
dwMaxVideoFrameBufferSize 153600
dwDefaultFrameInterval 333333
bFrameIntervalType 1
dwFrameInterval( 0) 333333
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 5
bmCapabilities 0x00
Still image unsupported
wWidth 352
wHeight 288
dwMinBitRate 48660480
dwMaxBitRate 48660480
dwMaxVideoFrameBufferSize 202752
dwDefaultFrameInterval 333333
bFrameIntervalType 1
dwFrameInterval( 0) 333333
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 6
bmCapabilities 0x00
Still image unsupported
wWidth 1280
wHeight 1024
dwMinBitRate 167772160
dwMaxBitRate 167772160
dwMaxVideoFrameBufferSize 2621440
dwDefaultFrameInterval 1250000
bFrameIntervalType 1
dwFrameInterval( 0) 1250000
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 3 (STILL_IMAGE_FRAME)
bEndpointAddress 0
bNumImageSizePatterns 6
wWidth( 0) 1280
wHeight( 0) 1024
wWidth( 1) 160
wHeight( 1) 120
wWidth( 2) 176
wHeight( 2) 144
wWidth( 3) 320
wHeight( 3) 240
wWidth( 4) 352
wHeight( 4) 288
wWidth( 5) 640
wHeight( 5) 480
bNumCompressionPatterns 6
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 4
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0300 1x 768 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 4
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x03fc 1x 1020 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 4
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 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 4
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0c00 2x 1024 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 4
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x1400 3x 1024 bytes
bInterval 1
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