BUG! Crash on VFX1.OFX adding basic MediaFX with "Preview" preview!

RedRob-CandlelightProdctns wrote on 11/21/2022, 10:22 PM

I'm just starting my finishing work on a project after my main editor finished her MultiCam edit.

I'm trying to add Brightness and Contrast VFX to one of my 4K media, and right after the MediaFX dialog appears, Vegas Crashes with this error:

Problem Description
Application Name: VEGAS Pro
Application Version: Version 20.0 (Build 214)
Problem: Unmanaged Exception (0xc0000005)
Fault Module: C:\Program Files\VEGAS\VEGAS Pro 20.0\OFX Video Plug-Ins\Vfx1.ofx.bundle\Contents\Win64\Vfx1.ofx
Fault Address: 0x00007FFCEC79F5F0

I can add this to an event without it crashing -- I can add it to a TrackFX and it does not crash -- but adding it to any Media causes this crash. Tried with both 4K and 1080p media clips. Also tried with "Border" VFX and same crash/error. I've used these FX for countless years without issue on this computer.. grrr.

This is a repeatable problem. I created a new project, inserted a media file, right-click choose Media FX, add "Brightness and Contrast" click "OK" -- MediaFX dialog appears and then Vegas crashes.

Performance Monitor does not show my CPU, memory or either GPU utilization anywhere near max when this happens.
I downgraded my Radeon RX 470 driver to the Vegas-recommended WHQL driver (the description says "Adrenalin 22.5.1 Recommended WHQL", but after installing and rebooting, it's showing as System Version 30.0.15021.11005)
When this is happening, GPU acceleration of video processing is set to "OFF", File/IO tab showing hardware decoding taking place on "Auto" (QSV on Intel HD Graphics 630). "Enable legacy HEVC decoding" is enabled. I share this info realizing that this probably is NOT a decode issue.

To make things more curious, I enabled "GPU acceleration of video processing" so it's now using my Radeon RX 470. Different results with this, but still not correct.

Adding Brightness/Contrast to the Event still works properly
Adding Brightness/Contrast to the Media results in a "BLACK" (blank) image on the preview monitor (but does not crash)
Adding "Color Grading" to the Media works properly. Adding Brightness/Contrast to the Media AFTER the Color Grading effect in the Media FX chain and Brightness/Contrast works correctly! If I put it before the Color Grading FX, black image in the output and none of the Brightness/Contrast controls have any impact

HELP?!

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Comments

redpaw wrote on 1/7/2023, 1:19 PM

i believe that it's the same issue that i was dealing with in here:
https://www.vegascreativesoftware.info/us/forum/vegas20-b214-media-fx-messes-up-preview--137750/

unfortunately over 2 months of going back and forth with the MAGIX support in my ticket but still no solution to this problem.

Reyfox wrote on 1/7/2023, 1:49 PM

Did you read @VEGASDerek comments?

RonB_USA wrote on 1/10/2023, 1:17 PM

Confirming problem and solution...

I have the same problem and went to this thread to try to find the answer. Thanks to all.

I was trying to put a Color Corrector Secondary on a Media FX in order to match another camera on two different video tracks. When I added the Media FX, the whole video track switched over to the other track. So it "killed" the track that I was using with the Media FX.

I checked my nVidia GPU driver, and a few other things. No solution.

Then when I tried Preview (Full) it seems to fix the problem.

Yep, confirming... I can toggle the problem and solution by just changing Preview from (Full) to (Auto), etc. I must use (Full) in order to add any Media FX effects. Thank you for helping fix this problem.

RonB_USA

VP20 Build 214 Intel nVidia

PS - In my opinion, this should be an important fix in the next Build. A serious problem.

Deathspawner wrote on 1/12/2023, 6:34 PM

I think this issue is well-established at this point, but I'll throw my hat into the ring.

As others have said, something about this issue seems tethered to the viewport scaling size. If I have GPU-acceleration either enabled or disabled, and the viewport is anything other than Full, VP20 will crash if it loads an impacted project (I've had it crash while using LUT and Median FX). Oddly, if GPU-acceleration is disabled, VP20 crashes immediately on the load of an impacted project, whereas acceleration on gives me enough time to avoid the crash by changing the viewport preview to Full.

It seems stable if viewport is set to Full, but I haven't done exhaustive testing.

RedRob-CandlelightProdctns wrote on 1/29/2023, 1:23 PM

I'm happy to say the new V20 release appears to have fixed this bug! Fantastic!

Communication Improvement Opportunity --- I didn't see this fix included in the release notes. I'm wondering if a mention could happen on the forum when a bug like this has been found and fixed? Or did I not follow a required process to get an "issue #" needed to make it to the release notes or something? I'm not complaining -- happy to see it was addressed -- just noting an opportunity for continuing improvements in communication.