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Full Version: Skype V4L2: Could not find a suitable capture format
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evenchance
Wed Jun 4 2008, 05:56
I'm trying to get Skype working with a Logitech Quickcam Pro for Notebooks (PID: 046d:0991) on a Dell Precision 4300n laptop running RHEL5

>uname -a
Linux zappa 2.6.18-53.1.14.el5 #1 SMP Tue Feb 19 07:18:46 EST 2008 x86_64 x86_64 x86_64 GNU/Linux

I've installed skype_static-2.0.0.68

>skype -version
Skype 2.0.0.68
Copyright © 2004-2007, Skype Limited

I've got the latest uvcvideo driver module loaded and the camera works fine with Kopete and lucview. In Skype Options->Video Devices I have 'Enable Skype Video' checked and 'UVC Camera (046d:0991)(/dev/video0)' shows as the selected webcam. But when I try to test the video device I get:

Skype V4L2: Could not find a suitable capture format
Skype V4L2: Could not find a suitable capture format
Starting the process...
Xlib: extension "XVideo" missing on display ":0.0".
Skype Xv: Xv port query failed
Skype XShm: XShm support enabled

and a black screen. When I'm connected to someone else we can hear each other just fine, I can see them, but they can't see me. Can someone please help me resolve this V4L2 capture format issue?

thanks...
evenchance
Wed Jun 4 2008, 20:42
I was able to resolve the missing "XVideo" extension by adding
Load "extmod"
to the "Module" section of /etc/X11/xorg.conf. It currently looks like:

CODE
# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig: version 1.0 (buildmeister@builder26) Thu Feb 14 18:13:41 PST 2008

# Xorg configuration created by pyxf86config

Section "ServerLayout"
Identifier "Default Layout"
Screen 0 "Screen0" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Synaptics" "CorePointer"
EndSection

Section "Files"
EndSection

Section "Module"
Load "glx"
Load "extmod"
EndSection

Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
Option "XkbModel" "pc105"
Option "XkbLayout" "us"
EndSection

Section "InputDevice"
Identifier "Synaptics"
Driver "synaptics"
Option "Device" "/dev/input/mice"
Option "Protocol" "auto-dev"
Option "Emulate3Buttons" "yes"
Option "LeftEdge" "120"
Option "RightEdge" "830"
Option "TopEdge" "120"
Option "BottomEdge" "650"
Option "FingerLow" "14"
Option "FingerHigh" "15"
Option "MaxTapMove" "110"
Option "VertScrollDelta" "20"
Option "HorizScrollDelta" "20"
Option "MinSpeed" "0.3"
Option "MaxSpeed" "0.75"
EndSection

Section "Monitor"

### Comment all HorizSync and VertSync values to use DDC:
Identifier "Monitor0"
VendorName "Unknown"
ModelName "Unknown"
HorizSync 30.0 - 110.0
VertRefresh 50.0 - 150.0
Option "DPMS"
EndSection

Section "Device"
Identifier "Videocard0"
Driver "nvidia"
BoardName "NVIDIA Quadro FX 360M"
EndSection

Section "Screen"
Identifier "Screen0"
Device "Videocard0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection


But I am still getting a black screen and the following output when trying to test my video device

Skype V4L2: Could not find a suitable capture format
Skype V4L2: Could not find a suitable capture format
Starting the process...
Skype Xv: Xv ports available: 32
Skype XShm: XShm support enabled
Skype Xv: Using Xv port 224
Skype Xv: No suitable overlay format found

My video card is (from lspci):
01:00.0 VGA compatible controller: nVidia Corporation Quadro FX 360M (rev a1)

I've attahed a copy of /var/log/Xorg.0.log and output from xvinfo.
Any ideas? thanks...
Andypoo
Sun Jun 8 2008, 00:26
The problem lies in this case with the capturing. Is it possible to bring a v4l-info output for your camera?

v4l-info can be found in the xawtv package.

Andrew.
zeroowl
Sat Jun 14 2008, 10:21
Hi ,
I have a similar problem with my Logitech web cam on Ubuntu Linux

[ 96.760939] uvcvideo: Found UVC 1.00 device <unnamed> (046d:08c5)
[ 96.865714] usbcore: registered new interface driver uvcvideo



Skype V4L2: Could not find a suitable capture format
Skype V4L2: Could not find a suitable capture format
Starting the process...
|Skype Xv: Xv ports available: 64
Skype XShm: XShm support enabled
Skype Xv: Using Xv port 355
Skype Xv: No suitable overlay format found





uname -a
Linux zeroowl 2.6.24-19-generic #1 SMP Wed Jun 4 15:10:52 UTC 2008 x86_64 GNU/Linux

SKype 2.0.0.68


v4l-info

QUOTE
### v4l2 device info [/dev/video0] ###
general info
VIDIOC_QUERYCAP
driver : "uvcvideo"
card : "UVC Camera (046d:08c5)"
bus_info : "0000:00:02.1"
version : 0.1.0
capabilities : 0x4000001 [VIDEO_CAPTURE,STREAMING]

standards

inputs
VIDIOC_ENUMINPUT(0)
index : 0
name : "Camera 1"
type : CAMERA
audioset : 0
tuner : 0
std : 0x0 []
status : 0x0 []

video capture
VIDIOC_ENUM_FMT(0,VIDEO_CAPTURE)
index : 0
type : VIDEO_CAPTURE
flags : 1
description : "MJPEG"
pixelformat : 0x47504a4d [MJPG]
VIDIOC_ENUM_FMT(1,VIDEO_CAPTURE)
index : 1
type : VIDEO_CAPTURE
flags : 0
description : "YUV 4:2:2 (YUYV)"
pixelformat : 0x56595559 [YUYV]
VIDIOC_G_FMT(VIDEO_CAPTURE)
type : VIDEO_CAPTURE
fmt.pix.width : 640
fmt.pix.height : 360
fmt.pix.pixelformat : 0x56595559 [YUYV]
fmt.pix.field : NONE
fmt.pix.bytesperline : 1280
fmt.pix.sizeimage : 460800
fmt.pix.colorspace : SRGB
fmt.pix.priv : 0

controls
VIDIOC_QUERYCTRL(BASE+0)
id : 9963776
type : INTEGER
name : "Brightness"
minimum : 0
maximum : 255
step : 1
default_value : 127
flags : 0
VIDIOC_QUERYCTRL(BASE+1)
id : 9963777
type : INTEGER
name : "Contrast"
minimum : 0
maximum : 255
step : 1
default_value : 32
flags : 0
VIDIOC_QUERYCTRL(BASE+2)
id : 9963778
type : INTEGER
name : "Saturation"
minimum : 0
maximum : 255
step : 1
default_value : 32
flags : 0

### video4linux device info [/dev/video0] ###
general info
VIDIOCGCAP
name : "UVC Camera (046d:08c5)"
type : 0x1 [CAPTURE]
channels : 1
audios : 0
maxwidth : 0
maxheight : 0
minwidth : 48
minheight : 32

channels
ioctl VIDIOCGCHAN: Invalid argument

tuner
ioctl VIDIOCGTUNER: Invalid argument

audio
ioctl VIDIOCGAUDIO: Invalid argument

picture
VIDIOCGPICT
brightness : 32639
hue : 0
colour : 32639
contrast : 32639
whiteness : 65535
depth : 16
palette : YUYV

buffer
ioctl VIDIOCGFBUF: Invalid argument

window
VIDIOCGWIN
x : 0
y : 0
width : 640
height : 360
chromakey : 0
flags
evenchance
Mon Jun 16 2008, 02:54
Hi Andrew,
thanks for your reply. here's the v4l-info output for my camera:

CODE
### v4l2 device info [/dev/video0] ###
general info
VIDIOC_QUERYCAP
driver : "uvcvideo"
card : "UVC Camera (046d:0991)"
bus_info : "0000:00:1d.7"
version : 0.1.0
capabilities : 0x4000001 [VIDEO_CAPTURE,STREAMING]

standards

inputs
VIDIOC_ENUMINPUT(0)
index : 0
name : "Camera 1"
type : CAMERA
audioset : 0
tuner : 0
std : 0x0 []
status : 0x0 []

video capture
VIDIOC_ENUM_FMT(0,VIDEO_CAPTURE)
index : 0
type : VIDEO_CAPTURE
flags : 1
description : "MJPEG"
pixelformat : 0x47504a4d [MJPG]
VIDIOC_ENUM_FMT(1,VIDEO_CAPTURE)
index : 1
type : VIDEO_CAPTURE
flags : 0
description : "YUV 4:2:2 (YUYV)"
pixelformat : 0x56595559 [YUYV]
VIDIOC_G_FMT(VIDEO_CAPTURE)
type : VIDEO_CAPTURE
fmt.pix.width : 320
fmt.pix.height : 240
fmt.pix.pixelformat : 0x47504a4d [MJPG]
fmt.pix.field : NONE
fmt.pix.bytesperline : 0
fmt.pix.sizeimage : 102400
fmt.pix.colorspace : SRGB
fmt.pix.priv : 0

controls
VIDIOC_QUERYCTRL(BASE+0)
id : 9963776
type : INTEGER
name : "Brightness"
minimum : 0
maximum : 255
step : 1
default_value : 128
flags : 0
VIDIOC_QUERYCTRL(BASE+1)
id : 9963777
type : INTEGER
name : "Contrast"
minimum : 0
maximum : 255
step : 1
default_value : 32
flags : 0
VIDIOC_QUERYCTRL(BASE+2)
id : 9963778
type : INTEGER
name : "Saturation"
minimum : 0
maximum : 255
step : 1
default_value : 32
flags : 0

### video4linux device info [/dev/video0] ###
general info
VIDIOCGCAP
name : "UVC Camera (046d:0991)"
type : 0x1 [CAPTURE]
channels : 1
audios : 0
maxwidth : 960
maxheight : 720
minwidth : 48
minheight : 32

channels
ioctl VIDIOCGCHAN: Invalid argument

tuner
ioctl VIDIOCGTUNER: Invalid argument

audio
ioctl VIDIOCGAUDIO: Invalid argument

picture
VIDIOCGPICT
brightness : 32896
hue : 0
colour : 9509
contrast : 8224
whiteness : 0
depth : 0
palette : unknown

buffer
ioctl VIDIOCGFBUF: Invalid argument

window
VIDIOCGWIN
x : 0
y : 0
width : 320
height : 240
chromakey : 0
flags : 0

pelle
Thu Jun 19 2008, 21:59
I'm having the same problem that the video is not shown from a Logitech Notebook Pro webcam on Fedora 9.

uname -a
Linux fenix 2.6.25.4-30.fc9.i686 #1 SMP Wed May 21 18:12:35 EDT 2008 i686 i686 i386 GNU/Linux

skype -v
Skype 2.0.0.72
Copyright © 2004-2007, Skype Limited

Skype V4L2: Could not find a suitable capture format
Skype V4L2: Could not find a suitable capture format
Starting the process...
Skype Xv: Xv ports available: 64
Skype XShm: XShm support enabled
Skype Xv: Using Xv port 355
Skype Xv: No suitable overlay format found

ioctl VIDIOCGCHAN: Invalid argument
ioctl VIDIOCGTUNER: Invalid argument
ioctl VIDIOCGAUDIO: Invalid argument
ioctl VIDIOCGFBUF: Invalid argument

### v4l2 device info [/dev/video0] ###
general info
VIDIOC_QUERYCAP
driver : "uvcvideo"
card : "UVC Camera (046d:08c3)"
bus_info : "0000:00:1f.2"
version : 0.1.0
capabilities : 0x4000001 [VIDEO_CAPTURE,STREAMING]

standards

inputs
VIDIOC_ENUMINPUT(0)
index : 0
name : "Camera 1"
type : CAMERA
audioset : 0
tuner : 0
std : 0x0 []
status : 0x0 []

video capture
VIDIOC_ENUM_FMT(0,VIDEO_CAPTURE)
index : 0
type : VIDEO_CAPTURE
flags : 1
description : "MJPEG"
pixelformat : 0x47504a4d [MJPG]
VIDIOC_G_FMT(VIDEO_CAPTURE)
type : VIDEO_CAPTURE
fmt.pix.width : 864
fmt.pix.height : 480
fmt.pix.pixelformat : 0x47504a4d [MJPG]
fmt.pix.field : NONE
fmt.pix.bytesperline : 0
fmt.pix.sizeimage : 62933
fmt.pix.colorspace : SRGB
fmt.pix.priv : 0

controls
VIDIOC_QUERYCTRL(BASE+0)
id : 9963776
type : INTEGER
name : "Brightness"
minimum : 0
maximum : 255
step : 1
default_value : 127
flags : 0
VIDIOC_QUERYCTRL(BASE+1)
id : 9963777
type : INTEGER
name : "Contrast"
minimum : 0
maximum : 255
step : 1
default_value : 32
flags : 0
VIDIOC_QUERYCTRL(BASE+2)
id : 9963778
type : INTEGER
name : "Saturation"
minimum : 0
maximum : 255
step : 1
default_value : 39
flags : 0

### video4linux device info [/dev/video0] ###
general info
VIDIOCGCAP
name : "UVC Camera (046d:08c3)"
type : 0x1 [CAPTURE]
channels : 1
audios : 0
maxwidth : 0
maxheight : 0
minwidth : 48
minheight : 32

channels

tuner

audio

picture
VIDIOCGPICT
brightness : 32639
hue : 0
colour : 10280
contrast : 8224
whiteness : 65535
depth : 0
palette : unknown

buffer

window
VIDIOCGWIN
x : 0
y : 0
width : 864
height : 480
chromakey : 0
flags : 0
dusty128
Thu Jun 26 2008, 16:31
I have the very same problem here, with a new Logitech Quickcam Pro 9000 (UVC driver). When I try to configure video and test it, the screen stays blank, skype gives me the following output:

Skype V4L2: Could not find a suitable capture format
Skype V4L2: Could not find a suitable capture format
Starting the process...
Skype Xv: Xv ports available: 64
Skype XShm: XShm support enabled
Skype Xv: Using Xv port 275
Skype Xv: No suitable overlay format found

Are there any solutions to this problem?
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