Why tee will freeze the pipeline?

[Yakov Sudeikin]

Thank you Tim, I did exactly that, but the result is the same.

http://pastebin.com/n8EHCGKY


On Fri, Dec 4, 2015 at 5:12 PM, Tim Müller <tim at centricular.com> wrote:

> On Fri, 2015-12-04 at 16:49 +0600, Yakov Sudeikin wrote:
>
> Hi,
>
> > http://pastebin.com/tWGsELib
> >
> > This is a dot file.
> >
> > I added a tee element and the pipeline is stuck in READY.
> >
> > But both branches (ximagesink, rtmpsink) will play if used alone
> > without tee.
> >
> > What prevents it from playing both branches at once?
>
> You need a queue in both branches after the tee, so add a queue before
> videoconvert ! ximagesink as well.
>
> If you don't tee will push to videoconvert which will push to
> ximagesink which will block as it is prerolled, waiting for the
> pipeline to go to playing. The pipeline however will now wait for all
> sinks to have data, but tee can't push data to the second branch
> because it's stuck in the first one in preroll. The queue fixes that.
>
> Cheers
>  -Tim
>
> --
> Tim Müller, Centricular Ltd - http://www.centricular.com
>
>
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