Wipe and Slide transitions with Server pre v2.3

dimitry_ishenko · December 26, 2020, 5:08pm

It seems Wipe and Slide transitions are completely screwed up with interlaced content. I’ve ran into this problem with Server ~v2.2 earlier. And just now after switching to v2.1.12_NRK.

Still images and progressive video seem fine. Transitioning from progressive to interlaced is fine as well. Going from interlaced to interlaced images starts “blooming”. Interlaced to progressive transitions are ignored and images just cuts after the transition duration.

This only seems to happen with Wipes and Slides. Mixes, Pushes and (obviously) Cuts are fine.

Could somebody try this on their system? I want to make sure this is not specific to my setup.

Thank you and Merry Xmas!

D-mo

hreinnbeck · December 26, 2020, 5:52pm

It’s been a while since I looked over that code, but IIRC it’s always done as progressive so interlace might be baking in. Can’t test for you though until next year.

Don’t have time to look it over but the relevant code is mostly this:

github.com

nrkno/tv-automation-casparcg-server/blob/2.1.x/core/producer/transition/transition_producer.cpp

/*
* Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>
*
* This file is part of CasparCG (www.casparcg.com).
*
* CasparCG is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* CasparCG is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with CasparCG. If not, see <http://www.gnu.org/licenses/>.
*
* Author: Robert Nagy, ronag89@gmail.com
*/

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dimitry_ishenko · December 26, 2020, 6:53pm

Thanks @hreinnbeck and no worries… Yeah, I’ve been looking at this file this morning. Should be able to try a few things shortly.

dimitry_ishenko · December 26, 2020, 7:53pm

This seems to do the trick: