QSV AVC Render artifacts in 19/18 vs no QSV Artifacts in 17 - SOLVED

Alyn99 wrote on 8/22/2021, 4:59 PM

Have Vegas Pro 17, 18 and now 19 V341 (trial mode) on same Intel i7 laptop with older Intel graphics (HD4000 but all versions run lightning fast on it). After jumping through a couple hoops on 18 & 19, I managed to enable QSV AVC encoding. As others have stated, this QSV GPU encoding is glitchy, at least on my machine, as I am seeing serious artifacting on every single render versus seeing NO ARTIFACTING AT ALL on the same renders with the same clip on the same machine in V17 with the SAME QSV AVC render settings. It shouldn't be a driver issue as 17,18,19 are all using the same graphics driver and Open Cl dlls. Has anybody with the newer Intel GPUs experienced this artifcating issue using QSV in 18 or 19 versus using it in 17? Magix have implemented a newer QSV encoding scheme I think in 18 and 19 and trying to figure out if it's my HD4000 GPU that is no longer compatible or if this new QSV encoding scheme has broken QSV AVC on all Intel cpus? I've tried to get an answer from tech support but so far none as , understandably, they're super busy with the V19 rollout. Am experiencing no other real issues with 19 and, if anything, 19 is running faster doing pretty much everything than 17 is. All this with just 8 GB ram. And so far, Boris, Red Giant and all my other plugins are having zero problems utilizing my old GPU. It's just the new QSV implementation that is the issue.

Comments

RogerS wrote on 8/22/2021, 6:45 PM

Vegas dropped support for that generation GPU by version 18. That would be my guess. No it's not broken on all Intel CPUs based on the reports of others here.

 

Howard-Vigorita wrote on 8/22/2021, 6:54 PM

I've have an Intel hd630 on one machine and a uhd630 on 2 others and qsv renders give me pretty high quality when evaluated with ffmetrics... got links to the ffmetrics author's thread and an online results table in my signature. Testing the new Iris family uhd750 is next on my to-do list.

EDIT: just tested the Intel uhd750 on a few of the Vegas Magix presets and get exactly the same ffmetrics quality results as with the 630's on other systems. Also identical results with v18 and v19. Updated the chart.

Alyn99 wrote on 8/22/2021, 9:37 PM

Ok, great. Thanks all for the quick responses. I figured they must have optimized it for the newer Intel cpus which makes total sense as they implemented a much higher level of GPU, especially opencl 2.0 and above support.

Vdanny wrote on 8/23/2021, 1:28 AM

Hi Alyn99,

I was wondering if you have tried the QSV option with Voukoder and if it gives you the same rendering artifacts?

Alyn99 wrote on 8/23/2021, 11:49 AM

@Vdanny, great timing as coincidentally last night I decided to give Voukoder a shot and it works perfectly now! I can't get Voukoder to work in straight quantizer mode, but when set to VBR/CBR mode it renders fast with excellent quality like QSV natively did in Vegas 17. I am clueless what Magix have done to their QSV render scheme differently in 18 and 19 that affects my old machine but Voukoder handles it well in V19 for my needs and the problem is solved.

RogerS wrote on 8/23/2021, 6:44 PM

Probably one is using a newer SDK than the other, which kicks out older cards.

Alyn99 wrote on 8/23/2021, 8:25 PM

Could be. Or the codec instructions are implemented differently. In 18 and 19 QSV renders fast and mostly fine. There are just intermittent artifacts (transparent blotches) every few frames. That doesn't happen in 17. Voukoder doesn't have that issue in 18/19 with QSV AVC so has saved me buying a new laptop :)