Question / Help Blackmagic Intensity Pro 4k + Overwatch

Homezonebenny

New Member
Hi,
I'm using a 2 PC setup with the Blackmagic Intenstity Pro 4k.
I use 120 Hz DVI duplicated to 60 Hz HDMI on my Gaming PC which goes into the Pro 4k (streaming PC).
Everythings fine so far.

Now I figured out that Overwatch have some horizontal lines, see:
http://i.imgur.com/Nv8nOsn.jpg (top left corner)
http://i.imgur.com/Cyp0m26.jpg (in the middle)

I don't have this horizontal lines on my 120 Hz Monitor.
I use in overwatch:
- 1920x1080 (120 Hz) Fullscreen
- Vsync on
- FPS limited to 119 FPS
This removes horizontal lines from 120 Hz without creating input lag at all.
Works for the 120 Hz but seems not working for the 60 Hz CaptureCard?!

All other games, for example Wither 3 have no issues.
Even when I move the camera quickly around, no horizontal lines.
Any ideas?!
 

Boildown

Active Member
You need a capture card that can do 120Hz. Otherwise cloning will either be 60Hz for both monitors or 120Hz for both monitors. You can't clone and have one monitor on the higher refresh rate and the other on the lower refresh rate. Well, I take that back, sometimes it lets you but in reality the higher FPS screen will feel like the lower FPS screen.

I use a Datapath Dual link DVI because of this, play and capture at 120Hz. I previously tried this with a lower-end Datapath and an Avermedia and ran into the limitations you're describing. And of course if you send 120Hz to a 60Hz capture card, you get bad tearing, there's no way around that.

You could try this instead: https://www.reddit.com/r/Twitch/comments/36obz8/144hz_monitor_display_port_60hz_limited_capture but I haven't done it myself.
 

Homezonebenny

New Member
@Boildown your are wrong.
I play on 120 Hz (fullscren, that's important on Win 10 because of a bug...) and duplicate the DVI 120 Hz to HDMI with 60 Hz. You can set this in nVidia settings.

If you can login that forum you can read about the issue on Windows 10 I already reported:
https://social.technet.microsoft.co...20-hz-60-hz-monitors-issue?forum=tnofftopicde
You get stable 120 Hz (while using duplicate to 60 Hz, or a second 60 Hz monitor) when playing the game in real fullscreen. Because nVidia driver takes over control. Windows Explorer.exe is buged in Windows 10.
IF you have a 120 (or 144 Hz) Monitor, while you have a 60 Hz Monitor connected to, and some "motion" like a video happens on the 60 Hz Monitor, your 120 Hz falls down to 60-85Hz .... Just a Win 10 explorer.exe bug.
Connect a 2nd 60 Hz (while video runs on it) OR duplicate to HDMI 60 Hz is exactly the same for windows.
It's nothing else than connect a 2nd 60 Hz Monitor.
So the only "solution" I found is, play the game in REAL exclusive (not windowed) Fullscreen mode.

For normal Win 10 user just buy 2x 120 Hz Monitor and you have no problem...
But for duplicate to CaptureCard with 60 Hz this WONT help. Only play the game in real fullscreen helps.
Just read my forum post (MS Forum) above for further informations.


Back to topic:
My capturecard wont accept a 120 Hz Signal at all. So the signal is for sure, 100% 60 Hz ;-)
Like I said, when I Capture Other games of fast motion, like this:
http://www.hitbox.tv/video/1172287
No screen tearing at all. It's only about overwatch. I'll test other shooter aswell to see.
But when I play Witcher 3 for example, and move the camera preeeetty fast, no tearing aswell.

I'll check out the link for sure. Thanks.

EDIT:
I read the link. Already knew that. But this should be no difference to what duplicate is doing (when set to 60 Hz in nVidia control panel).
What you can do is you can run OBS and use OBS monitoring on the HDMI output.
So you can use auto scene switcher and all those stuff. But I'm not sure how "stable" the preview image of OBS is for that need ;-)
Like I said, the YT Video with 1920x1080 60 FPS have no tearing. So it's not about the "input" to the capture card I would say, this is stable 60 Hz.
Sure the YT Video have stable 60 FPS 100% and the game Overwatch have 119 FPS, because limited the FPS to this value. Maybe that's the problem.
I have to find a setting for my 120 Hz Monitor which is not producing horizontal lines, while it's not producing lines for the capture card aswell.
The good thing about: Vsync on, FPS limited to 119 FPS is that you have no input lag what you normally get from vsync. While you still get no tearing on 120 Hz screen.

I will play around with maybe set it to:
144 Hz vSync with FPS limited to 143 Hz to see if I have no tearing on Monitor.
And maybe no tearing on capture card aswell, because always 60 FPS delivered on the 60 Hz.
I just use 120 Hz because : 60 = 2 (no komma value).


The "Datapath Dual link DVI" is really expensive :-\
And it have no HDMI for console streaming. So I would need to split the PS4 Signal to audio / image.
For PC usage the Datapath Dual link DVI would work for me since I use an external audio mixer. DVI only would be fine for PC -> PC streaming.

Best thing in the world would be a capture card exactly like the Blackmagic Intensity Pro 4k with:
- 1920x1080 @ 120 Hz
-> without the 4k resolution support anymore
Like the quality and all of the pro 4k. Just with 120 Hz and perfect ^^
 
Last edited:

Boildown

Active Member
Datapath has a DisplayPort capture card (with 2 inputs even) that I think does audio too. But its even more expensive. I got my dual link DVI one on ebay for a decent price. I've never seen the displayport one for a low price on Ebay yet.
 
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