8K Resolution

sky · December 27, 2021, 12:29pm

Hello,
It has been asked before but not answered.

at CasparCG
Will there be 8K resolution support?

didikunz · December 27, 2021, 1:53pm

In theory it should not be a problem. In practice the programmer would need some sort of 8K video source, as you need to be able to test it, while developing.

sky · December 27, 2021, 2:44pm

but on casparcg server, I can’t add 8K channels.
I can create up to 2160p channels.
I think I asked my question wrong.

didikunz · December 27, 2021, 3:07pm

That is correct and you asked your question right. Probably I have answered your question wrong. To be able to create 8K channels a programmer needs to add that to Caspar. For this to do, he/she needs a 8K video source for testing and also a monitor for 8K. As most of the CasparCG core development is done in Europe, I guess that none of our guys have such an 8K environment, because AFAIK 8K is currently only used in Japan. We in Europe still produce most of the content in HD.

TheYouth · December 27, 2021, 5:41pm

Well, @Maurice78 found a way to create custom resolutions - so I guess it´s possible to add custom resolutions, that would include 8K resolutions. Maybe he can share his knowledge

Maurice78 · December 30, 2021, 9:30am

Hi what i did was actualy quite simple (if you know how to build caspar)
i added the wanted format’s into

github.com

CasparCG/server/blob/master/src/core/video_format.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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and

github.com

CasparCG/server/blob/master/src/core/video_format.h

/*
 * 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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which are actually 1 line in each file for a format. but i guess this only works with the screenconsumer and maybe with the ndi-consumer. i think you need a lot more stuff to do if you want this on a decklinkconsumer.

By the way it would be very nice if it works on NDI level
i guess you triggerd me to try

grt
Maurice

sky · December 31, 2021, 12:58pm

Thanks for your answers.
Happy new year.

jovadeza · July 12, 2022, 12:46pm

Hi,

Currently I am looking into adding a custom resolution (8K) into CasparCG. I tried following the steps on “Building the CasparCG Server”, however without success. I only get the Visual Studio project files but no executable.

Could you please explain how to create a custom executable?

Thanks!

Maurice78 · July 15, 2022, 10:07am

Hi jovadeza

un fortunatly my visualstudio install is playing games with me
But perhaps better for your situation is to have a look at this

github.com/CasparCG/server

feat: custom channel resolutions & subregion copy

CasparCG:master ← nrkno:feat/upstream-decklink-subregion

opened 05:04PM - 12 Jul 22 UTC

Julusian

+689 -262

Support for defining channel resolutions in the config file. And running a de…cklink on a channel at a different resolution to the channel, outputting a subregion. The only requirement is that the framerate of the decklink and channel must match. No scaling/rotation support, for that use a dedicated channel and route. Use cases include: - LED video wall which runs at some odd resolution (eg 1000x100). - TV video wall (eg 3x1080p panels in a row) - Projector blend In all of these cases, it allows you to run the channel at the resolution of the final product, and avoids needing to transform every layer to match the usable region, and still send it to decklink outputs without the overhead of extra channels.

jovadeza · July 15, 2022, 3:34pm

Hi Maurice,

Thanks, this looks really promising!

Sidon · February 9, 2023, 10:22am

Now you can create a custom resolution for your channel, (and it works amazingly, thank you @Julusian )

But I haven’t found a way to assign a decklink device to be an 8K output (using 8k Pro).
Has anybody managed to do it? I hope this can be added to the latest releases.
Thanks!