Gstreamer Alpha channel on black

[Sebastian Dröge]

On Mon, 2016-10-17 at 05:35 -0700, Andrew Silby wrote:
> Thanks Sebastian, 
> 
> I'll file a bug about it.
> 
> In the meantime, is there any other way that I can mix the 2 video streams
> pip but not display the overlaid stream if black? Is alpha the best way of
> doing it?

You could also detect the brightness of the stream somewhere, and based
on that disable the stream on the compositor element or whatever you're
using for mixing.

-- 
Sebastian Dröge, Centricular Ltd · http://www.centricular.com
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