[gst-devel] How to change colorspace on the fly

[Julien Isorce]

replace xvimagesink by ximagesink.

ffmpegcolorspace is there not really needed because videotestsrc can output
rgb.

You forgot to add myplugin into the bin. (libass)

Julien

2008/4/11, AlannY <alanny at starlink.ru>:
>
> Thijs Vermeir wrote:
>   > Hi,
>
> >
>   > You can use ffmpegcolorspace like this:
>   > gst-launch -v videotestsrc ! ffmpegcolorspace ! video/x-raw-rgb !
> fakesink
>   >
>   > But you don't need ffmpegcolorspace because the videotestsrc can
>   > also output video in rgb. (Try gst-inspect videotestsrc)
>   >
>   > To force videotestsrc to use rgb use something like this:
>   > gst-launch -v videotestsrc ! video/x-raw-rgb ! fakesink
>   >
>   > Gr,
>   > Thijs
>   >
>
>
> And how to do it programmaly? I'm trying, but everything I get
> video/x-raw-yuv ;-(
>
> (example)
> source = gst_element_factory_make("videotestsrc", "source");
> colorspace = gst_element_factory_make("ffmpegcolorspace", "colorspace");
> myplugin = gst_element_factory_make("myplugin", "myplugin");
> video_sink = gst_element_factory_make("xvimagesink", "video_sink");
>
> gst_bin_add_many(GST_BIN(pipeline), source, colorspace, libass,
> video_sink, NULL);
>
> caps = gst_caps_new_simple("video/x-raw-rgb", NULL);
> gst_element_link_filtered(source, colorspace, caps);
> gst_caps_unref(caps);
>
> gst_element_link(colorspace, myplugin);
> gst_element_link(mypluin, video_sink);
>
> Nothing works. Myplugin still receives video/x-raw-yuv
>
>
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