Libv4l is in moblin repo, but not in default image. You can install it manually 
by "yum install libv4l"


-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Fang 
Wenqi
Sent: 2009年6月13日 23:18
To: Glen Gray
Cc: [email protected]
Subject: Re: [Moblin Dev] How moblin work with video4linux2 devices


On 06/12/2009 06:05 PM, Glen Gray wrote:
> Libv4l is not actually where the v4l2 API resides. It was written to
> provide a cleaner abstracted api to the underlying v4l2 system calls.
  Right.

>
> In short you don't need libv4l to code against the v4l2 api. In fact,
   In my understand, gst-plugins-good uses libv4l,  so I think Moblin image
should integrate libv4l, but it not, I'm wondering ...

> I've only just heard of libv4l recently. Any projects I've worked on
> have used the system api rather than this lib.
>
> On 12 Jun 2009, at 10:39, Fang Wenqi <[email protected]> wrote:
>
>> Thanks, Hao.
>>
>> In gst-plugins-good's require list, I do not find things like libv4l,
>>
>> # rpm -q gst-plugins-good --requires | grep v4l; echo $?
>> 1
>>
>> # rpm -q `rpm -qa | grep gst` --requires | grep v4l; echo $?
>> 1
>>
>> Actually, Moblin image does not have libv4l, is this a mistake, or by
>> design, or use other names ... ?
>>
>>
>> Thanks,
>> Wenqi
>>
>>
>> On 06/12/2009 05:17 PM, Chen, Hao H wrote:
>>> Gstreamer uses v4l2 plugin, so that application like cheese could use
>>> gstreamer framework to apply effects to photos and videos. You also
>>> could use applications to access v4l2 directly, like luvcview
>>> (http://www.quickcamteam.net/software/linux/v4l2-software/luvcview)
>>>
>>> In addition, Uvcvideo driver is enabled by default for moblin. Which
>>> works with all popular webcams.
>>>
>>> Hao
>>>
>>> -----Original Message-----
>>> From: [email protected] [mailto:[email protected]] On
>>> Behalf Of Fang Wenqi
>>> Sent: 2009年6月12日 15:06
>>> To: [email protected]
>>> Subject: [Moblin Dev] How moblin work with video4linux2 devices
>>>
>>> Moblin package gstreamer-plugins-good doesn't require libv4l,
>>> so how Moblin work with all kinds of video4linux2 devices ?
>>>
>>>
>>> Thanks,
>>> Wenqi
>>>

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