[Microdia] Re: Microdia and Skype Video

GWater Sun, 25 Jan 2009 15:12:12 -0800

[email protected] schrieb:

Il Sunday 25 January 2009 11:51:23 GWater ha scritto:

(And I was told I write to long sentences ;) .)


Anyway I extracted this as the problem description from your mail:

" In this image quality varies eg,rolling image,blueish image etc. "


hi,
I have similar problem with my webcam,
i have posted here for not open a new thread

my skype image is black, instead ekiga  don't show red and green colors

mplayer output

web...@webkey:~$ mplayer tv:// -tv driver=v4l2:width=640:height=480:fps=25:device=/dev/video0 -vo x11

MPlayer dev-SVN-r28058-4.2.3 (C) 2000-2008 MPlayer Team

CPU: Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz (Family: 6, Model: 15, Stepping: 11)

CPUflags:  MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
Compiled with runtime CPU detection.

Playing tv://.
TV file format detected.
Selected driver: v4l2
 name: Video 4 Linux 2 input
 author: Martin Olschewski <[email protected]>
 comment: first try, more to come ;-)
Selected device: SN9C20x USB 2.0 Webcam Driver
 Capabilites:  video capture  read/write  streaming
 supported norms:
 inputs: 0 = Webcam;v4l2: ioctl get input failed: Invalid argument

 Current input: 1
 Current format: unknown (0x31384142)
v4l2: ioctl set format failed: Invalid argument
v4l2: ioctl set format failed: Invalid argument
v4l2: ioctl set format failed: Invalid argument
v4l2: ioctl set format failed: Invalid argument
v4l2: ioctl set format failed: Invalid argument
v4l2: ioctl set format failed: Invalid argument
v4l2: ioctl set format failed: Invalid argument
v4l2: ioctl set format failed: Invalid argument
tv.c: norm_from_string(pal): Bogus norm parameter, setting default.
v4l2: ioctl enum norm failed: Invalid argument
Error: Cannot set norm!
Selected input hasn't got a tuner!
v4l2: Cannot get fps
v4l2: ioctl set mute failed: Invalid argument
v4l2: ioctl query control failed: Invalid argument
v4l2: ioctl query control failed: Invalid argument
==========================================================================
Cannot find codec matching selected -vo and video format 0x31384142.
Read DOCS/HTML/en/codecs.html!
==========================================================================

v4l2: ioctl set mute failed: Invalid argument
v4l2: 0 frames successfully processed, 0 frames dropped.

Exiting... (End of file)

To identify the source of these problems I need a few more pieces of
information.

1. Are you using USB 1/1.1 or USB 2.0?
("$ lsusb" will tell you.)


Bus 004 Device 003: ID 0c45:624e Microdia PC Camera (SN9C201 + SOI968)
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)

bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64

  idVendor           0x0c45 Microdia
  idProduct          0x624e PC Camera (SN9C201 + SOI968)
  bcdDevice            1.01

iManufacturer 0 iProduct 1 USB20 Camera iSerial 0 bNumConfigurations 1

  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength          279
    bNumInterfaces          1
    bConfigurationValue     1

iConfiguration 0 bmAttributes 0x80

      (Bus Powered)
    MaxPower              500mA

2. Please post the output of "$ dmesg | grep sn9c20x" after you tried to
capture video from your webcam with skype.

sn9c20x: SN9C20X USB 2.0 Webcam - 0C45:624E plugged-in.
sn9c20x: Detected SOI968 Sensor.
sn9c20x: Webcam device 0C45:624E is now controlling video device /dev/video0
sn9c20x: Using yuv420 output format
usbcore: registered new interface driver sn9c20x
sn9c20x: SN9C20x USB 2.0 Webcam Driver v2009.01 loaded


this is skype outpt maybe is usefull

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 65
Skype Xv: No suitable overlay format found

3. Which version of libv4l are you currently using?

0.5.8

4.Please post a screenshot of the image the webcam provides.

skype  black

ekiga

http://www.umbertocarrara.it/img/schermata8.png
trust me memory is red and battery is green

where I'm wrong?

Thank you.
GWater


Thank a lot for your help
Umberto

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You need to use mplayer with libv4l like this:

$ LD_PRELOAD=/usr/lib/libv4l/v4l2convert.so mplayer [...]

Replace [...] with any parameters for mplayer.

Skype can be run the same way:

$ LD_PRELOAD=/usr/lib/libv4l/v4l2convert.so skype

GWater

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[Microdia] Re: Microdia and Skype Video

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