Can anyone test Pro 13 or Pro 14 rendering while playing video w/VLC?

peterh337 wrote on 9/30/2016, 3:23 AM

I have reported this previously.

Basically Pro 13's rendering gets "damaged" if another operation is performed on the same PC which involves video playback and, I think, anything to do with the use of Direct-X.

I can reproduce this 100% by accessing the computer over remote desktop (RDP) or by playing a video with VLC or any other video player, while Pro 13 is rendering.

This video shows the issue: https://vimeo.com/177027490

about 15 seconds in. What this shows is that my 3xFX chain (contrast, colour correction, NewblueFX lens correction) is getting skipped every few frames. Clearly Pro is getting corrupted in some way. Once this corruption starts it never goes away until program restart.

Unfortunately there are some other apps which also trigger this issue. I have just had to abort a 100hr render... It may have been Photoshop (CS2)... or it may have been a video playback on any website, so even a visit to say facebook will do it.

MSP11 and MSP12 never had any of this.

I think the way to try to reproduce this is to render with an FX chain a bit like the above and play something with VLC at the same time.

Machine: win7-64, 24GB, i7-970 3GHz, GTX750 Kalm 2GB.

I would upgrade to Pro 14 if it fixes this, because it is costing me a lot of time.

Comments

NickHope wrote on 9/30/2016, 3:36 AM

Is your GPU acceleration on or off in Vegas?

peterh337 wrote on 9/30/2016, 4:56 AM

It has been disabled everywhere... in the global Preferences (that was necessary to stop Pro 13 hanging on render) and in all the render template options.

In MSP11/12 I used the defaults i.e. "use if available".

malowz wrote on 9/30/2016, 5:10 AM

if i recall, newbluefx use GPU. and there is a option to disable GPU in the plugin preferences.

peterh337 wrote on 9/30/2016, 5:44 AM

There are some FX which are "GPU only" but I am not using any of those, and IIRC I did disable GPU in NBFX also. I won't be able to check this for a few days because I have just started another long render :)

It is a fair point you make actually because I never used NBFX in MSP11/12 - because the Lens Correction needs Vegas *Pro*, plus it needs a 64 bit OS which I was not running MSP11 on.

However from the video I posted above, it isn't just the NBFX lens correction that is getting corrupted but also the contrast and colour correction FXs and those are the stock Sony ones.

Quitter wrote on 9/30/2016, 5:44 AM

It has never been a good idea to start other applications during rendering, let alone any video applications.
If you install the SeMW_Extensions_1_0_6, you have the opportunity to pause the rendering if its needed.
But there where on only available for VP13 at the moment.

peterh337 wrote on 9/30/2016, 9:29 AM

Would it be true that if Vegas is minimised then the program should not be feeding anything to the video processor - because there isn't an active window to send the stuff to? AFAIK that is how all of Windows works. So maybe I started some offending program while Vegas was still on-screen.

I do some intermediate renders (e.g. to render-in a timecode, before editing the video) and at about 1/10 of real time these take say 100hrs.

john_dennis wrote on 9/30/2016, 9:59 AM

Since you "can reproduce this 100% by accessing the computer over remote desktop (RDP)" why not remove the fX one at a time to see if the bug is caused by a particular fX?

I'd start with the NewblueFX lens correction.

peterh337 wrote on 9/30/2016, 10:29 AM

I will try that.

The more basic point is that this is a bug. Windows is not supposed to do that :)

And I don't have any option but to use the FX I am using. About the only thing I can do is to set up an old PC with win7-64 and dedicate it to rendering. I believe Pro 13 can be installed on two machines at the same time - can anyone confirm?

john_dennis wrote on 9/30/2016, 10:43 AM

You can install Vegas on two machines. Currently, I'm rendering a video on my main machine with Brightness and Contrast, Color Correction, Timecode and one of the Hitfilm fX (I don't have NewBlue on this machine). I'm looping a camera video file in Windows Media Player and I am typing this on my laptop into an Internet Explorer session also running on the render machine.

When I connected RDP, WMP threw an error as the sound was moved to the remote laptop. I have about 30 minutes to go, but I plan on eating breakfast while this runs. I wish I was able to reproduce your fx string exactly.