Have you tried to add the inputs as 1080p25 in the input selector? Shouldn't be much harder.

If the image gets distorted you might want to try the WDM Capture rather than the Decklink Video Capture if you set the correct settings in the BlackMagic Control Panel.

(And of course set the vMix outputs ("Master Framerate" and External outputs) to 1080p25.)


Cheers,
Håvard Njåstad
Njastad.com

Select 1080 50i for the capture source and set deinterlacing to Blend.
This will ensure the video is converted to 1080 25p suitable for use with streaming.

In that case, it might be worth trying out the new vMix 14 preview.
http://forums.vmix.com.a....aspx?g=posts&t=2656

You can select 1080 50i for the input and set 1080 50i also as the Master Frame Rate in Settings -> Display.
Then you can select the same for the decklink output to ensure interlaced from input to output and also select 25p for streaming
which will use the first field from each frame.

I've downloaded and recently tried vMix preview 14. It does seem to handle interlaced a lot better, but for me it seems like it somehow has introduced some sort of motion blur?

And I'm having a huge problem with the stability: when I set output to virtual (720p25) and external (1080i50) and hit the external button, my system freezes and the screen goes blank.. I have to do a reset and start over again. Sometimes it works, usually it fails. When it does not fail asap, it seems like the render time irregulary shoots to the roof and goes back to normal again.

Any thoughts about that? I have five 1080i50 sources as input and five videofiles and a titler. This is a bit frightning since i have a huge stream-production this friday.

I've also noticed that when I open a windows-window the render shoots through the roof, also if I change the position of that window. I also get framedrops..

I've also tried the same setup in Wirecast, and it seems to work fine there.

The rig:
2x decklink quad
Nvidia 780 GTI
i7-4930k
16 GB RAM
1 main SSD 256
2x SSD in RAID as secondary

Yup, the display tab shows 1080i50, perhaps it is just me. I'll doublecheck the quality tomorrow.

Once again, thank you for the quick feedback. I'll try to replace the graphic-card tomorrow too. I have installed the latest drivers and the displays are directly connected to the graphic card.

Can it be that I have different output from virtual and external? Do you have any other tips I might try? I had the same problem in vMix 13. It may be HW-Related but I really doubt it since it works in wirecast.

One thing to check, have you tried playing any games recently on that machine without issue?

The idea is to try taxing the card in other applications to see if it fails there also, maybe the power supply
is not providing enough power for the 780 GTX since it can be very power hungry.

The second thing to try is to disable the onboard graphics in the BIOS just to be sure that is not causing problems.

Did you set the nvidia settings for vMix after the issue showed up or before? Generally the nvidia settings
are optimised for gaming so best left at default for vMix.

Have you tried turning on external with no inputs added? Maybe the decklink cards are causing a conflict somewhere.

I just ran a test using 1080i50 inputs, and 1080i50 + 720p25 on the external output to confirm it is all working correctly.
That was on a laptop with Windows 8.1 and a Geforce 765M, render time under 10ms.

Ok, so i have tried different setups today. Still having the freezing, and screen blacks out when I set external out, both virtual and SDI and then open FMLE.

I have:
Changed graphics card from 780 TI to 660 TI - still freezes and screen goes blank
Opened up vMix without adding BMD decklink inputs - same result
Removed one decklink quad (then the system stutters at startup, and vMix jumps really high in rendertime, and videofiles stutters)

So I removed the decklink cards and installed them in another computer, with almost similar specs as the one that freezes.

And guess what, it works like a charm. And the render time stays low, almost all the time. No framedrops on external out, no stuttering, freezing or anything else troublesome.

This makes me wonder, either it is the windows 7 installation (a strict enterprise installation with a lot of restrictments), the mainboard OR the PSU.

Any thoughts, anyone?

This friday I am going to do a national broadcast with the system, so i`m a bit nervous at the moment..