[Bug 757610] compositor: negotation failure when mixing alpha and non alpha branches

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=757610

--- Comment #16 from Thiago Sousa Santos <thiagossantos at gmail.com> ---
(In reply to Philippe Renon from comment #15)
> I built 1.6.3 and was able to reproduce the issue with this pipeline :
> 
> compositor name=mixer ! videoconvert ! autovideosink videotestsrc ! queue !
> mixer. udpsrc port=9000 ! textrender ! videorate drop-only=true !
> video/x-raw, framerate=10/1 ! queue ! mixer.
> 
> Then rebuilt with the proposed fix and was not able to reproduce it anymore
> :).

Thanks for testing.

> 
> Please note that I feel that the whole has_alpha stuff is not needed ;)

It is needed because videoaggregator needs to identify if downstream supports
alpha formats or not as videoaggregator can't convert those. Otherwise it might
accept alpha formats and then fail as downstream won't support those.

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are the assignee for the bug.