Re: Skype and libv4l

[Lamarque Vieira Souza <lamarque@gmail.com>]

	It must be some problem in LD_PRELOAD, even setting LIBV4L2_LOG_FILENAME the 
file is not created. I am running skype like this:

LD_PRELOAD=/usr/lib32/libv4l2.so /opt/skype/skype

	/opt/skype/skype is the binary executable. There is not error message about 
LD_PRELOAD or libv4l. Skype returns:

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: 4
Skype XShm: XShm support enabled
Skype Xv: Using Xv port 131
Skype Xv: No suitable overlay format found

	OBS: compat-ioctl32.ko is being used by the driver so it should support 32-
bit ioctl.

Em Tuesday 24 March 2009, Lamarque Vieira Souza escreveu:
> 	Hi,
>
> Em Tuesday 24 March 2009, Hans de Goede escreveu:
> > On 03/23/2009 09:08 PM, Lamarque Vieira Souza wrote:
> > > 	Hi all,
> > >
> > > 	I am trying to make Skype work with my webcam (Creative PC-CAM 880,
> > > driver zr364xx). By what I have found Skype only supports YU12, YUYV
> > > and UYVY pixel formats, which libv4l supports as source formats only
> > > and not as destination formats.
> >
> > YU12 is the same as YUV420 (planar) which skype does support. I assure
> > you that skype works with libv4l for cams which have a native format
> > which skype does not understand.
>
> 	My fault here (+/-), I created a function to decode fourcc hex numbers to
> names and it returns V4L2_PIX_FMT_YU12 instead of V4L2_PIX_FMT_YUV420. I
> did not know they are synonyms. Anyway, it seems lib4l 0.5.9 (32-bit) is
> not working with Skype (32-bit) while lib4l 0.5.3 (64-bit) is working with
> Kopete (64-bit) patched to work with libv4l (no LD_PRELOAD). I will keep on
> trying to figure out why.
>
> > What is an other issue with skype is that it insists on asking 320x240,
> > so if the driver for your cam cannot deliver 320x240 and libv4l fails to
> > make 320x240 out of it in someway (see below) then skype will fail.
> >
> > libv4l will crop 352x288 to 320x240 especially for skype, and it will
> > downscale 640x480 to 320x240 for the same reason.
>
> 	The driver delivers 320x240 as default.


-- 
Lamarque V. Souza
http://www.geographicguide.com/brazil.htm
Linux User #57137 - http://counter.li.org/

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