Vegas 12 & DeckLink preview black-out during scrub

PeteM wrote on 11/14/2013, 8:01 PM
Hey guys,
I have an Intel Core i7 3960X 3.3Ghz Extreme PC with 24GB RAM running a Quadro 4000 GPU and a DeckLink Extreme 4K card. As you can see the PC was custom built for high end video production.

However! When I scrub through the rushes on the timeline I loose video sync resulting in black screen on my external preview monitor that is running on the DeckLink 4K Extreme card. While the Vegas preview window running on the Quadro 4000 seems okay. The rushes are nothing too heady, just footage from Sony AVCHD Camcorders recorded at 720 50P.

Is there some kind of buffer issue here. I've tried changing the default setting from 200K but that only results in the external preview monitor image freezing.

I have a bucket list of crashes with Vegas Pro 12 (and v11 to a large degree) and considering the PC is a high-end performance workstation, the lackluster performance and instability of the most recent Vegas releases is inexcusable.

I'm so frustrated, after using Vegas since version 6, and constantly hearing that the problem is low performance hardware. Well I've thrown money at the problem but that does not seem to have made much of an improvement. As a professional video producer it seems my options are limited to either put up with it or switch to a more stable NLE.

Comments

OldSmoke wrote on 11/14/2013, 8:19 PM
I doubt you have a hardware issue but rather a driver issue. I wonder whether your Quadro is a 4000 or K4000?
VP11&12 have both been stable for me out of the box. I don't experience all the hangup and crashes like many others do but I also don't use any 3rd party hard or software with it.
Have you tried Vegas without the Decklink card to see if it is stable? I believe the Decklink card has a PCIe x4 interface; make sure it is not in a PCIe x1 slot and that the slot doesn't interfere with your GPU.

Proud owner of Sony Vegas Pro 7, 8, 9, 10, 11, 12 & 13 and now Magix VP15&16.

System Spec.:
Motherboard: ASUS X299 Prime-A

Ram: G.Skill 4x8GB DDR4 2666 XMP

CPU: i7-9800x @ 4.6GHz (custom water cooling system)
GPU: 1x AMD Vega Pro Frontier Edition (water cooled)
Hard drives: System Samsung 970Pro NVME, AV-Projects 1TB (4x Intel P7600 512GB VROC), 4x 2.5" Hotswap bays, 1x 3.5" Hotswap Bay, 1x LG BluRay Burner

PSU: Corsair 1200W
Monitor: 2x Dell Ultrasharp U2713HM (2560x1440)

PeteM wrote on 11/19/2013, 6:17 PM
Thanks OldSmoke,
I checked the machine config and both cards are actually in PCIe x16 slots. There are no other cards installed on the motherboard, I've also disabled on-board LAN & Audio hardware to minimise shared system resources.

Removing the DeckLink card makes no difference. I've also disabled GPU acceleration which seems to have minimized the crashes during editing, but I'm still getting the buffering issue with the preview screen going blank when scrubbing or even playing back video on the timeline. The only way to avoid this seems to be to change the preview settings to Preview (Auto) or Draft, which seems counter productive, especially after paying over $1,000 for the DeckLink 4K Extreme card. To add insult to injury, I've also been get consistent Vegas crashing each time I begin a render, forcing me to restart in order to get a render out. Another beauty is when I launch Vegas it freezes on "Updating plug-in cache" with the only way to get it going again is to crash it and re-launch.

So much instability and downtime! I'm convinced that the target market for Sony Vegas Pro cannot possibly be for professional full-time editors but for video amateurs & weekend hobbyists :(
PeteM wrote on 11/19/2013, 7:19 PM
Just updated to the latest build 765 and got a nice crash 29% into a WMV render...

Problem Description
Application Name: Vegas Pro
Application Version: Version 12.0 (Build 765) 64-bit
Problem: Unmanaged Exception (0xc0000005)
Fault Module: C:\Windows\system32\nvopencl.dll
Fault Address: 0x000007FECAC306A9
Fault Offset: 0x00000000000506A9

Fault Process Details
Process Path: C:\Program Files\Sony\Vegas Pro 12.0\vegas120.exe
Process Version: Version 12.0 (Build 765) 64-bit
Process Description: Vegas Pro
Process Image Date: 2013-11-13 (Wed Nov 13) 23:38:52
videoITguy wrote on 11/19/2013, 7:33 PM
Read:
http://www.sonycreativesoftware.com/forums/ShowMessage.asp?MessageID=875812&Replies=5
akayani wrote on 3/3/2014, 3:33 AM
It is a design bug in the software. I'm testing a GTX 760 + 9800GT Nvidia cards... to work with Davinci Resolve Lite the 9800GT must be the cards supporting the monitors so the the GTX 760 is devoted to CUDA processing.

In Vegas 12 the preview is a black screen. That is unless you resize it they you can see it perfectly or run it full screen on the second monitor.

There are 2 solutions...

1. Preferences / turn off any GPU processing... kind defeats the point for me.
2. Turn the grid or safe areas on the preview on... it's a bit ugly but it works.

Given those solutions work, I'd put this on a bug list for Sony.