Freeze/crash while rendering? Was fine before...

Rip wrote on 8/31/2017, 1:07 AM

Quick spec:

CPU: i7-7700k at 5GHz (HT off)

GPU: EVGA 1080ti SC2 Hybrid

RAM: 16GB Corsair Dominatir Platinum at 3000MHz

With all the extras, M.2 drive, SSD's etc etc etc

 

I have a 30min Nvidia Shadowplay file (3440x1440) that I made some simple edits to and rendered OK a few days ago, it took 3hrs to render using a custom profile but I decided the quality wasn't quite good enough so I changed a few settings, now it won't render, it starts OK then stops at a random point and just freezes.

So to troubleshoot I reinstalled Vegas 13, turned GPU acceleration off and went back to practically a standard render template (MP4 Internet 1080p, with just a resolution change to 3440x1440) and trimmed my video down to 20seconds just for testing purposes, it rendered fine...

So one by one I started adding my custom settings one at a time and rendering it to see which option was causing the issue, I finally narrowed it down to number of slices, my 20sec clip would render with 11 slices but not 12. So I started a fresh session, put the whole video clip in and used the last working render settings (11 slices), but again it failed even though it worked with the shorter clip?!

So maybe it's not as black and white as just one of the render settings causing my problem. My CPU temp is about 78°C while rendering so that should be OK.

 

Comments

Rip wrote on 8/31/2017, 1:08 AM

Hyperthreading is turned off currently as I get better gaming performance with single core performance at 5.0Ghz than I do with Hyperthreading and stock CPU clocks, could this be the issue? 

If not I'm fresh out of ideas? I've had render issue ma in the past with variable bit rate Shadowplay files where the sound would go out of sync towards the end of the video but that seemed OK on the first render a few days ago. 

Rip wrote on 8/31/2017, 8:55 AM

I've also just tried a different video clip (not from Shadowplay), and it still won't render?

Rip wrote on 8/31/2017, 9:42 AM

This is day number 4 now, I've tried all the 'fixes' on YouTube and nothing has worked, I'm about to give up on Vegas.

Rip wrote on 8/31/2017, 10:11 AM

Think I've figured it out, it seems to render fine with '4 slices'

I'm new to Vegas and following some tutorials on YouTube to get some decent rendering settings led me to set my slices to 12, I assumed this was a quality metric but I actually don't think it is, I've put it back to 4 and it's OK now.

My PC is no rendering beast but it's also not a slouch at all so, what does the slice setting mean (in layman terms)? And why can't my PC handle the 12 slices that everyone on YouTube seems to recommend?

 

Rip wrote on 8/31/2017, 10:21 AM

I'm just guessing here but is it working with 4 slices as I have a quad core processor with Hyperthreading switched off so effectively the number of slices matches the number of cores?

If so, would enabling Hyperthreading allow me to set slices to 8 and therefore speed up rendering by a decent amount?