[gst-devel] Setting pad properties at commandline
ensonic at hora-obscura.de
Thu Oct 18 15:55:32 CEST 2007
also the GstBin implements it. Ask me if you need help and let me know
when you have a patch (bst to put on bugzilla and post the ticket here.)
Thanks for trying!
Quoting Sameer Naik <sameer at damagehead.com>:
> i see it done in the equalizer plugin factory.
> i shall work on getting this functionality into the videomixer
> thanks for the help stefan
> On Wed, 2007-10-17 at 20:41 +0300, Stefan Kost wrote:
>> Sameer Naik schrieb:
>> > hi,
>> > im writing a n-1 element, and am using the videomixer plugin (from
>> > gst-plugins-good package) to get the plug-in architecture in place.
>> > in the videomixer plugin, i see that the gstpad object is overloaded and
>> > a new videomixerpad object is created to store information information
>> > about each input pad.
>> > the videomixerpad class has the following properties installed on it:
>> > alpha, xpos, ypos,...
>> > but if i run the following pipeline:
>> > gst-launch videotestsrc ! video/x-raw-yuv, xpos=320, ypos=240,
>> > alpha=0.1 ! ffmpegcolorspace ! xvimagesink
>> #1 there is no videomix there.
>> #2 you cannot specify pad-proerties on capsfilter - it simple does
>> not make sense
>> Videomixer should implement the childproxy iface. Then you can do:
>> gst-launch videotestsrc ! videomixer src_00::xpos=320 src_00::ypos=240
>> src_00::alpha=0.1 ! ffmpegcolorspace ! xvimagesink
>> Its not difficult, do you wanna try?
>> > no change appears at the displayed output, or to the properties of the
>> > pad.
>> > is it that the pad properties cannot be set in the above manner. if so,
>> > is there a way to set the pad properties at the command line level.
>> > regards
>> > ~sameer
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