Basics of gstreamer pipeline
adi.praveen at gmail.com
Wed Oct 31 13:14:14 PDT 2012
Thanks for the detailed answer.
It really helped me in getting a better picture.
On Wed, Oct 31, 2012 at 7:27 PM, Tim-Philipp Müller <t.i.m at zen.co.uk> wrote:
> On Wed, 2012-10-31 at 18:17 +0900, Praveen Adi wrote:
> > Can some please explain me the following:
> > In the pipeline,
> > gst-launch videotestsrc ! ffmpegcolorspace ! ximagesink
> > What cololorspace does videotestsrc produce here?
> It will query ffmpegcolorspace for what it supports, which in turn will
> query ximagesink for what it supports (so that what ximagesink supports
> can be prefered).
> It will likely produce whatever colorspace/pixel layout ximagesink
> returns first in the caps it returns from its get_caps() function.
> > What colorspace conversion is ffmpegcolorspace doing?
> If videotestsrc can produce every format ximagesink could possibly
> support, then no conversion will be done. ffmpegcolorspace will operate
> in passthrough mode.
> > What colorspace is ximagesink accepting and where is it presenting,
> > Framebuffer??
> It depends on the driver/card. It will be determined at runtime what
> formats are supported. It's likely going to be some RGB format.
> You can see the caps negotiated if you pass -v to gst-launch.
> > Here we don't mention any properties for the plugin, but still how do
> > they co-work?
> Not sure I understand the question, could you rephrase it?
> gstreamer-devel mailing list
> gstreamer-devel at lists.freedesktop.org
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