Thread: [Linux-uvc-devel] problem with audio/video Microsoft Lifecam studio Hd

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[Linux-uvc-devel] problem with audio/video Microsoft Lifecam studio Hd

From: Andrea G. <par...@gm...> - 2011-12-13 12:31:56

Hi, i've a problem with Microsoft Lifecam studio HD.
  I've installed openmeetings 1.9 on server linux ubuntu 10.04.
I've installed a client with ubuntu 11.10, kerne 3.0.3, uvcvideo verision 1.1.0, firefox 8, adobe flash
11.1.102.55 and java sun 1.6.
I've a Microsoft Lifecam studio Hd that works with other application;
so when i test it with audio and video in the preview windows it
works, but when i enter in the room the screen is black.
If i changed the audio device with the internal realteck, it works and
i can view the images.

So if i do the same thing in windows client it works correctly.

In the list of device i found :

Despite being able to work with lower

	 USB bandwidths, this device always requests the maximum possible bandwidth,
       even for the MJPEG format. Using one of those cameras in conjunction with
       another USB device (including the camera internal microphone) will likely
       fail. You can tell the uvcvideo driver to estimate the required bandwidth
       instead of trusting the camera by setting the FIX_BANDWIDTH quirk. This will
       only affect uncompressed formats, and even there there's no guarantee of
       success.


So i've to use the quirks but not work because i think that the stream is MJPEG and no uncompressed.
There is a way to forcing use uncompressed format or other solution?

Andrea

[Linux-uvc-devel] problem with audio/video Microsoft Lifecam studio Hd

From: Andrea G. <par...@gm...> - 2011-12-18 15:52:29

I used your suggestion to put  quirks=80 but nothing change.

sudo rmmod uvcvideo && sudo modprobe uvcvideo quirks=0x80 jpeg_comp=1 6 
trace=0xffff

So when i settings in openmeetings video from lifecam and audio from Hda 
intel, the video works, but when i set audio and video from lifecam in 
syslog there is this error:

*uvcvideo: Failed to set UVC probe control : -32 (exp. 26).*

and the screen are black.

I've tested various resolution but the problem remains.

I don't know why the driver use YUV without MJPEG stream, the patch that 
i've used is correct?
Where i can set to use MJPEG stream? or it is the flash that send 
incorrect parameter?

In syslog there is this messages:

uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCAP)
uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FMT)
uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FMT)
uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FMT)
uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FMT)
uvcvideo: uvc_v4l2_ioctl(VIDIOC_G_FMT)
uvcvideo: uvc_v4l2_ioctl(VIDIOC_S_FMT)
uvcvideo: Trying format 0x56595559 (YUYV): 640x480.
uvcvideo: Using default frame interval 33333.3 us (30.0 fps).
uvcvideo: uvc_set_video_ctrl: PROBE; bmHint: 1; bFormatIndex: 1; 
bFrameIndex: 1; dwFrameInterval: 333333; wKeyFrameRate: 0; wCompQuality: 
0; wCompWindowSize: 0; wDelay: 0; dwMaxVideoFrameSize 0; 
dwMaxPayloadTransferSize: 0
uvcvideo: Revrite dwMaxPayloadTransferSize 128 to 2392
uvcvideo: uvc_get_video_ctrl: GET_MIN; bmHint: 0; bFormatIndex: 1; 
bFrameIndex: 1; dwFrameInterval: 333333; wKeyFrameRate: 0; wCompQuality: 
0; wCompWindowSize: 0; wDelay: 0; dwMaxVideoFrameSize 614400; 
dwMaxPayloadTransferSize: 2392
uvcvideo: Revrite dwMaxPayloadTransferSize 3072 to 1024
uvcvideo: uvc_get_video_ctrl: GET_MAX; bmHint: 0; bFormatIndex: 1; 
bFrameIndex: 1; dwFrameInterval: 1333333; wKeyFrameRate: 0; 
wCompQuality: 0; wCompWindowSize: 0; wDelay: 0; dwMaxVideoFrameSize 
614400; dwMaxPayloadTransferSize: 1024
uvcvideo: uvc_set_video_ctrl: PROBE; bmHint: 1; bFormatIndex: 1; 
bFrameIndex: 1; dwFrameInterval: 333333; wKeyFrameRate: 0; wCompQuality: 
0; wCompWindowSize: 0; wDelay: 0; dwMaxVideoFrameSize 0; 
dwMaxPayloadTransferSize: 0
uvcvideo: Revrite dwMaxPayloadTransferSize 3072 to 2392
uvcvideo: uvc_get_video_ctrl: GET_CUR; bmHint: 0; bFormatIndex: 1; 
bFrameIndex: 1; dwFrameInterval: 333333; wKeyFrameRate: 0; wCompQuality: 
0; wCompWindowSize: 0; wDelay: 0; dwMaxVideoFrameSize 614400; 
dwMaxPayloadTransferSize: 2392
  uvcvideo: uvc_v4l2_ioctl(VIDIOC_G_FMT)
uvcvideo: uvc_v4l2_ioctl(VIDIOC_S_FMT)
uvcvideo: Trying format 0x56595559 (YUYV): 320x240.
uvcvideo: Using default frame interval 33333.3 us (30.0 fps).
uvcvideo: uvc_set_video_ctrl: PROBE; bmHint: 1; bFormatIndex: 1; 
bFrameIndex: 8; dwFrameInterval: 333333; wKeyFrameRate: 0; wCompQuality: 
0; wCompWindowSize: 0; wDelay: 0; dwMaxVideoFrameSize 0; 
dwMaxPayloadTransferSize: 0
uvcvideo: Revrite dwMaxPayloadTransferSize 128 to 1024
uvcvideo: uvc_get_video_ctrl: GET_MIN; bmHint: 0; bFormatIndex: 1; 
bFrameIndex: 8; dwFrameInterval: 333333; wKeyFrameRate: 0; wCompQuality: 
0; wCompWindowSize: 0; wDelay: 0; dwMaxVideoFrameSize 153600; 
dwMaxPayloadTransferSize: 1024
uvcvideo: Revrite dwMaxPayloadTransferSize 3072 to 1024
uvcvideo: uvc_get_video_ctrl: GET_MAX; bmHint: 0; bFormatIndex: 1; 
bFrameIndex: 8; dwFrameInterval: 1333333; wKeyFrameRate: 0; 
wCompQuality: 0; wCompWindowSize: 0; wDelay: 0; dwMaxVideoFrameSize 
153600; dwMaxPayloadTransferSize: 1024
  uvcvideo: uvc_set_video_ctrl: PROBE; bmHint: 1; bFormatIndex: 1; 
bFrameIndex: 8; dwFrameInterval: 333333; wKeyFrameRate: 0; wCompQuality: 
0; wCompWindowSize: 0; wDelay: 0; dwMaxVideoFrameSize 0; 
dwMaxPayloadTransferSize: 0
uvcvideo: Revrite dwMaxPayloadTransferSize 2688 to 1024
uvcvideo: uvc_get_video_ctrl: GET_CUR; bmHint: 0; bFormatIndex: 1; 
bFrameIndex: 8; dwFrameInterval: 333333; wKeyFrameRate: 0; wCompQuality: 
0; wCompWindowSize: 0; wDelay: 0; dwMaxVideoFrameSize 153600; 
dwMaxPayloadTransferSize: 1024
uvcvideo: uvc_v4l2_ioctl(VIDIOC_G_FMT)
uvcvideo: uvc_v4l2_ioctl(VIDIOC_S_FMT)
uvcvideo: Trying format 0x56595559 (YUYV): 320x240.
uvcvideo: Using default frame interval 33333.3 us (30.0 fps).
uvcvideo: uvc_set_video_ctrl: PROBE; bmHint: 1; bFormatIndex: 1; 
bFrameIndex: 8; dwFrameInterval: 333333; wKeyFrameRate: 0; wCompQuality: 
0; wCompWindowSize: 0; wDelay: 0; dwMaxVideoFrameSize 0; 
dwMaxPayloadTransferSize: 0
5:3:1: cannot get freq at ep 0x82
uvcvideo: Failed to set UVC probe control : -32 (exp. 26).


And this is the udev info:

UDEV  [21.904696] add      
/devices/pci0000:00/0000:00:1d.7/usb1/1-8/1-8:1.0/video4linux/video0 
(video4linux)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-8/1-8:1.0/video4linux/video0
SUBSYSTEM=video4linux
DEVNAME=/dev/video0
SEQNUM=1642
ID_V4L_VERSION=2
ID_V4L_PRODUCT=Microsoft® LifeCam Studio(TM)
ID_V4L_CAPABILITIES=:capture:
ID_VENDOR=Microsoft
ID_VENDOR_ENC=Microsoft
ID_VENDOR_ID=045e
ID_MODEL=Microsoft®_LifeCam_Studio_TM_
ID_MODEL_ENC=Microsoft®\x20LifeCam\x20Studio\x28TM\x29
ID_MODEL_ID=0772
ID_REVISION=0112
ID_SERIAL=Microsoft_Microsoft®_LifeCam_Studio_TM_
ID_TYPE=video
ID_BUS=usb
ID_USB_INTERFACES=:0e0100:0e0200:010100:010200:030000:
ID_USB_INTERFACE_NUM=00
ID_USB_DRIVER=uvcvideo
ID_PATH=pci-0000:00:1d.7-usb-0:8:1.0
ID_PATH_TAG=pci-0000_00_1d_7-usb-0_8_1_0
COLORD_DEVICE=1
COLORD_KIND=camera
MAJOR=81
MINOR=0
DEVLINKS=/dev/v4l/by-id/usb-Microsoft_Microsoft®_LifeCam_Studio_TM_-video-index0 
/dev/v4l/by-path/pci-0000:00:1d.7-usb-0:8:1.0-video-index0
TAGS=:udev-acl:

Re: [Linux-uvc-devel] problem with audio/video Microsoft Lifecam studio Hd

From: Alexey F. <bug...@fi...> - 2011-12-15 20:28:43

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Am 13.12.2011 12:31, schrieb Andrea Greggio:
> Hi, i've a problem with Microsoft Lifecam studio HD. I've installed
> openmeetings 1.9 on server linux ubuntu 10.04. I've installed a
> client with ubuntu 11.10, kerne 3.0.3, uvcvideo verision 1.1.0,
> firefox 8, adobe flash 11.1.102.55 and java sun 1.6. I've a
> Microsoft Lifecam studio Hd that works with other application; so
> when i test it with audio and video in the preview windows it 
> works, but when i enter in the room the screen is black. If i
> changed the audio device with the internal realteck, it works and i
> can view the images.
> 
> So if i do the same thing in windows client it works correctly.
> 
> In the list of device i found :
> 
> Despite being able to work with lower
> 
> USB bandwidths, this device always requests the maximum possible 
> bandwidth, even for the MJPEG format. Using one of those cameras
> in conjunction with another USB device (including the camera
> internal microphone) will likely fail. You can tell the uvcvideo
> driver to estimate the required bandwidth instead of trusting the
> camera by setting the FIX_BANDWIDTH quirk. This will only affect
> uncompressed formats, and even there there's no guarantee of 
> success.
> 
> 
> So i've to use the quirks but not work because i think that the
> stream is MJPEG and no uncompressed. There is a way to forcing use
> uncompressed format or other solution?

Yes there are way to force webcam to do some thing,
but it looks like in any case you need to edid source of kernel or of
userspace program.

in kernel it is even possible to recalculate jpeg bandwidth,
one of my patches was some where on the list.

may the force be with you :)

- -- 
Regards,
Alexey
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