[Gambas-user] The WebCam Examples crash

[Benoît Minisini]

Le 01/06/2013 18:14, Tobias Boege a écrit :
> On Sat, 01 Jun 2013, Beno?t Minisini wrote:
>> Le 31/05/2013 20:37, Tobias Boege a ?crit :
>>> On Fri, 31 May 2013, Beno?t Minisini wrote:
>>>> Hi,
>>>>
>>>> Ford anyone could test if gb.media (the gstreamer component) can be used
>>>> to deal with V4L2 devices?
>>>>
>>>> There are gstreamer plugins for that:
>>>>
>>>> http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-good-plugins/html/gst-plugins-good-plugins-plugin-video4linux2.html
>>>>
>>>
>>> This is what I did:
>>>
>>> - Install and load that v4l2loopback because I have no webcam (/dev/video0
>>>     is created)
>>> - Install gst-plugins-good (with the v4l2 gstreamer plugin; this caused
>>>     minor confusion on Arch Linux because I installed the gstreamer-1.0
>>>     packages instead of Gambas' 0.10 ones.)
>>> - As per the wiki of v4l2loopback, execute:
>>>     $ gst-launch-0.10 videotestsrc ! v4l2sink device=/dev/video0
>>>     which feeds /dev/video0 with sample data
>>> - And execute:
>>>     $ gst-launch-0.10 v4l2src device=/dev/video0 ! xvimagesink
>>>     which displays the stuff properly.
>>>
>>> But now I can't get the Gambas part to work because I don't understand how
>>> these things work.
>>>
>>> Regards,
>>> Tobi
>>>
>>
>> I know how to do the last part, but please tell me exactly how to
>> activate that *@#%! v4l2loopback device.
>>
>> I didn't succeed in compiling the module on Ubuntu 13.04 with the
>> information available on the internet.
>>
>
> It's a kernel module so you need to have the kernel headers installed to
> compile it:
>
> $ sudo apt-get install linux-headers-$(uname -r)
>
> Then clone the source code of v4l2loopback and install it:
>
> $ git clone https://github.com/umlaeute/v4l2loopback
> $ cd v4l2loopback
> $ make && sudo make install
>
> should do the rest. To load the module, issue
>
> $ sudo modprobe v4l2loopback
>
> and /dev/video0 should be created.
>
> Regards,
> Tobi
>

I just tried to use the packages provided with Ubuntu, but no way to 
make them working... :-/ So let's go compiling the module by hand...

-- 
Benoît Minisini