Render text at certain moments with GnlComposition
guerra.rossana at gmail.com
Mon Nov 21 17:01:06 PST 2011
Thanks for your response, the idea behind this is for subtitles.
I'll give a try, I am very clueles as new on this, so I couldn't get the
scope of these plugins.
I'll write back with some result.
2011/11/21 Thibault Saunier <thibault.saunier at collabora.com>
> Have you tried using the Gstreamer Editing Services to do that?
> Transitions and text overlay are supported already:
> I know it is not really the answer to your technical question but GES
> seems to be best suited for this particular problem. Also as GES is
> built upon gnonlin, you could have a look at the code to see how we
> handle that.
> Thibault Saunier
> On Mon, 2011-11-21 at 18:03 -0200, Rossana Guerra wrote:
> > Hello, I have a Gnlcomposition with 2 gnlfilesources (videofiles), I
> > need to render text in a customizable manner. For instance, at certain
> > time file1 needs text over it and file2 doesn't and viceversa or even
> > both could need the text rendered over them.
> > I could put a text in the common queue, so it always appears and it
> > isn't the needed behavior.
> > I appreciate any clue, thanks
> > Rossana
> > The pipeline
> > GnlComposition
> > gnlfilesource1
> > --------------------gnlOperarion--------queue-----sink // I put
> > the textoverlay between the queue and the sink
> > gnlfilesource2
> > gnlOperation //for crossfade purposes
> > alpha1
> > ----------videomixer--------ffmpegcolor
> > alpha2
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