Multiple Source Pipeline Hangs

[Chuck Crisler]

You probably need to put them in separate threads. You can do that with
queues or by explicitly putting them into threads.

http://gstreamer.freedesktop.org/data/doc/gstreamer/head/manual/html/chapter-threads.html



On Mon, May 6, 2013 at 3:50 PM, johnwesting <john.blank.westing at gmail.com>wrote:

> I have a pipeline with multiple sources and my pipeline does caps
> negotiation
> in serial for each source instead of in parallel like I would expect, i.e.
> the GstBaseTransform::Start() method of the second source is not called
> until after the first source has negotiated its capabilities. I've been
> trying to find a solution for most of the day but can't find anything. I'm
> using gst-launch and the pipeline examples I am finding online aren't
> helping me.
>
> My pipeline looks something like this:
>
> gst-launch interleave name=i ! alsasink \
> myfakesrc ! myfakedec ! queue ! i. \
> myfakesrc ! myfakedec ! queue ! i.
>
> The second instance of myfakesrc does not get started until after the caps
> are negotiated for the first myfakessrc element. I want the 2 sources to
> run
> completely independent of each other, as if they are different processes,
> but joined at the interleave element. I tried surrounding the last 2 lines
> with {} brackets, e.g. { myfakesrc ... i. } \, but it still didn't work and
> I got the GStreamer warning: "Error during parsing: syntax error,
> unexpected
> $undefined". I also tried using [] brackets but got the same GStreamer
> warning. Please help.
>
> Thanks,
> John
>
>
>
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