Old 01-21-2020, 02:54 AM   #1
mrdevis
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Default Routing Video to video card

Hi,

At the moment it is only possible to get a video playing in a window on the screen.
It will be vEry vEry handy if this can become routeable to something like a Blackmagic Decklink SDI card. This will enhance the workflow in our studios massively. At the moment we circumvent the problem by adding a hdmi to sdi converter, but this occupies an extra port.

Any chance this is going to be implemented in Reaper??

+1

Best, Jeroen
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Old 01-22-2020, 08:49 AM   #2
mespotine
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Is there some kind of standardization for such things? Drivers, specs anything, that is used in the industry, so the devs can have a look at that?
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Old 01-24-2020, 12:08 AM   #3
bcslaam
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+1
I second having output to a dedicated card.

I have a Blackmagic Intensity pro 4k which I'd imagine uses the same api calls to the driver as the Decklink cards.

I suggest the devs look at the libraries required to access video capture playback via the OS.
VLC linux can see the card and both capture and output to it. There's a beta for Windows. This guy
https://github.com/videolan/vlc/commits?author=robUx4
on github is working on it.

Since vlc is used by Reaper, can calls to the card be made by proxy or can the code be used to access Decklink/Intensity Pro directly in reaper list of video engine??
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Old 01-24-2020, 01:29 AM   #4
FixItInPost
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+1

If REAPER could output video via Blackmagic's DeckLink, Intensity, Shuttle, or even UltraStudio devices it would free up the second video output on my graphics card and I could gain some screen real estate.

From what I can gather, Blackmagic uses a unified driver that uses common calls to their playback and capture devices. An SDK (currently Desktop Video 11.4 SDK) is available on their website. I guess it would need to be integrated into REAPER which might come with some licensing issues - I know Zeranoe had to drop DeckLink functionality (-f decklink) from their FFMPEG builds back in 2016 due to licensing issues.

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Old 01-24-2020, 06:31 AM   #5
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I forgot +1 from me as well, as this would be very beneficial for those, who do scoring or audio-overdubbing on movie/video-projects.
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Old 01-24-2020, 02:32 PM   #6
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Big +1 from me. Really miss being able to run dedicated video off my Decklink card. Made things so simple.
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Old 01-29-2020, 09:00 AM   #7
mrdevis
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Coming to think of it, there is a decklink module available for gstreamer at https://coaxion.net/blog/2014/12/imp...ecklink-cards/

Now if it would be possible to sink the video out of the JS video processor into gstreamer, and then pipe it to the decklink card, it would help things getting on the road.

The article doesn't mention any license fees which gstreamer should cough up.

Maybe a path to follow?

Cheers, Jeroen
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