gstreamer Python and cairooverlay

[Roy Wiggins]

I can't get a single svg element to show up using the python bindings :(

The command line 

gst-launch-0.10 -v videotestsrc ! ffmpegcolorspace ! rsvgoverlay data =
'<svg><circle cx="100" cy="100" r="50" fill="red" /></svg>' !
ffmpegcolorspace ! autovideosink

works as expected. I tried doing the same thing in Python, and while it
doesn't error, it also doesn't display the overlay (though the videotestsrc
does show up):

pipeline = gst.parse_launch('videotestsrc ! ffmpegcolorspace ! rsvgoverlay
data = \'<svg><circle cx="100" cy="100" r="50" fill="red" /></svg>\' !
ffmpegcolorspace ! autovideosink')

I also tried building the pipeline by creating each pad in turn and linking
them, but that didn't work either; neither does using an svg file which
works just find at the command line.


Olivier Aubert-2 wrote
> Hello
> 
> Given your requirements, did you give the rsvgoverlay element a try? It
> is cross-platform, and allows you to overlay arbitrary SVG graphics on
> top of the video. You do not have to write any cairo code, just generate
> on-the-fly SVG code and feed it to the element.
> 
> Olivier





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