[gst-devel] How do I get gst-inspect properties for v4l2src device other than /dev/video0?

[Stefan Kost]

Am 19.04.2010 19:20, schrieb Short, Jonathan:
> 
>> -----Original Message-----
>> From: Edward Hervey [mailto:bilboed at gmail.com]
>> Sent: Saturday, April 17, 2010 12:15 PM
>> To: Discussion of the development of GStreamer
>> Subject: Re: [gst-devel] How do I get gst-inspect properties for
>> v4l2src device other than /dev/video0?
>>
>> On Fri, 2010-04-16 at 14:53 -0500, Kulecz, Walter (JSC-SK)[WYLE INTEG.
>> SCI. & ENG.] wrote:
>>>> Camera sources are live-sources. That means
>> GST_BUFFER_TIMESTAMP(buf) is
>>>> a clock sample of the time when the frame was captured
>>>> (clocktime-basetime). Thats why it is a good idea to use operating
>>>> system mechanisms to run those capture threads at higher priority
>> or
>>>> even under realtime scheduling (avoiding jitter in the
> timestamps).
>>>>
>>>> Stefan
> 
> Is there a preferred method for setting the thread priorities of
> sources, given that different sources may have different internal
> threading structure and threading is generally abstracted by gstreamer?
> 
> For example, I'd like to set the priority of rtspsrc as suggested above.

Have a look at the examples under gstreamer/tests/examples/streams/. It is
unfortunately platform specific. Glibs gthread abstraction does not cover this
area (well).

Stefan

> 
> Thanks,
> 
> Jonathan
> 
> 
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