Re: [Spca50x-devs] gspca v2-0.2.0 fails with 046d:0928 Logitech,
- Date: Mon, 12 May 2008 09:50:45 +0100 (BST)
- From: Chris Hammond <vikinghat@xxxxxxxxx>
- Subject: Re: [Spca50x-devs] gspca v2-0.2.0 fails with 046d:0928 Logitech,
--- Jean-Francois Moine <moinejf@xxxxxxx> wrote:
<snip>
> Well, it seems spcaview wants YUV420. The webcam
> gives Bayer
> images and the current gspca helper does not handle
> such decoding.
> So, you cannot have any image.
>
> >I've not tried to use luvcview because this
> logitech
> >webcam is not a uvc device, as far as I know.
>
> luvcview is a v4l2 application, but it would give
> the same result
> as the current version does not handler Bayer images
> (hey, Michel,
> when will you integrate my patches?)
>
> Then, you should use some other application: vlc,
> mplayer, skype..
> (camorama and xawtv do not work)
>
Is there one you recommend?
I've just tried MPlayer 1.0-1.rc2.10plf2008.1-4.2.2
(I'm using Mandriva 2008.1 with kernel
2.6.24.4-desktop-1mnb, and I have a DVB card plugged
in now as /dev/video0). This gives a live picture -
but with a black pink and white picture, and no
autoexposure etc - command is:
$mplayer tv:// -tv
driver=v4l2:width=352:height=288:device=/dev/video1:noaudio:outfmt=0x56595559
I got the outfmt code from running v4l-info - output
attached. Looking at the mplayer outfmt=help output,
shows mplayer does not support the two available
formats YUYV or BA81 - so it is luck that entering the
hex value as above gives a picture. Google shows
there is a recent patch for mplayer and BA81, but I'm
not planning on trying to build mplayer from source
anytime soon.
Needless to say skype does not work - I seem to
remember a YUV type format is required. I had a quick
try with gstfakevideo, which also did not work - which
probably means gstreamer-0.10 does not handle BA18 or
YUYV.
I'm trying vlc - but I'm new to it and the syntax is
causing me trouble.
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A Smarter Email http://uk.docs.yahoo.com/nowyoucan.html$ v4l-info /dev/video1
### v4l2 device info [/dev/video1] ###
general info
VIDIOC_QUERYCAP
driver : "spca561"
card : "Logitech QC Express Etch2"
bus_info : "0000:00:10.0"
version : 0.2.0
capabilities : 0x5000001 [VIDEO_CAPTURE,READWRITE,STREAMING]
standards
inputs
VIDIOC_ENUMINPUT(0)
index : 0
name : "spca561"
type : CAMERA
audioset : 0
tuner : 0
std : 0x0 []
status : 0x0 []
video capture
VIDIOC_ENUM_FMT(0,VIDEO_CAPTURE)
index : 0
type : VIDEO_CAPTURE
flags : 0
description : "BA81"
pixelformat : 0x31384142 [BA81]
VIDIOC_ENUM_FMT(1,VIDEO_CAPTURE)
index : 1
type : VIDEO_CAPTURE
flags : 0
description : "YUYV"
pixelformat : 0x56595559 [YUYV]
VIDIOC_G_FMT(VIDEO_CAPTURE)
type : VIDEO_CAPTURE
fmt.pix.width : 352
fmt.pix.height : 288
fmt.pix.pixelformat : 0x31384142 [BA81]
fmt.pix.field : NONE
fmt.pix.bytesperline : 352
fmt.pix.sizeimage : 101376
fmt.pix.colorspace : SRGB
fmt.pix.priv : 0
controls
VIDIOC_QUERYCTRL(BASE+0)
id : 9963776
type : INTEGER
name : "Brightness"
minimum : 0
maximum : 63
step : 1
default_value : 32
flags : 0
VIDIOC_QUERYCTRL(BASE+1)
id : 9963777
type : INTEGER
name : "Contrast"
minimum : 0
maximum : 16383
step : 1
default_value : 8192
flags : 0
VIDIOC_QUERYCTRL(BASE+18)
id : 9963794
type : BOOLEAN
name : "Auto Gain"
minimum : 0
maximum : 1
step : 1
default_value : 1
flags : 0
### video4linux device info [/dev/video1] ###
general info
VIDIOCGCAP
name : "Logitech QC Express Etch2"
type : 0x1 [CAPTURE]
channels : 1
audios : 0
maxwidth : 352
maxheight : 288
minwidth : 48
minheight : 32
channels
VIDIOCGCHAN(0)
channel : 0
name : "spca561"
tuners : 0
flags : 0x0 []
type : CAMERA
norm : 0
tuner
ioctl VIDIOCGTUNER: Invalid argument
audio
ioctl VIDIOCGAUDIO: Invalid argument
picture
VIDIOCGPICT
brightness : 33288
hue : 0
colour : 0
contrast : 32770
whiteness : 0
depth : 8
palette : unknown
buffer
ioctl VIDIOCGFBUF: Invalid argument
window
VIDIOCGWIN
x : 0
y : 0
width : 352
height : 288
chromakey : 0
flags : 0
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