Render Times

WhyBe wrote on 8/27/2003, 8:27 PM
I noticed that the Windows CPU meter only goes to 33% when rendering. Is there a way to get Vegas to be more of a CPU hog when rendering?

I'm using a dual 2.8GHz Xeon 533MHz Bus, 1GB of ram

Also I am rendering to mpg2 a 3.5 hour video clip being run through Sharpen, Broadcast Colors, Saturation, Color Correction (footage poorly recorded). Also, iZotope audio plug-in.
It has already been rendering for 24 hours and looks to be taking another 24. I have the setting to the highest video quiality. Variable bit rate from 2.8MBps to 192,000 bps.

Is there something I am doing wrong or am I to expect these render times with the given settings?

Thanks in advance,
WhyBe

Comments

thief_ wrote on 8/27/2003, 8:53 PM
>I have the setting to the highest video quiality

You answered your own question! The higher the quality, the longer it takes. It seems to me, from experience, that each jump in quality setting means the rendering will take twice as long. Here's a tabular explanation:

Quality..........Time 2 Render
1.........................1
2.........................2
3.........................4
4.........................8
5.........................16
WhyBe wrote on 8/27/2003, 9:34 PM
What about the CPU usage at only 33% ?

What does the video quality slider do, technically speaking?

Begbie wrote on 8/27/2003, 9:56 PM
VV4 IMO is slow to render regardless of your system spec. I think this software needs some work, or hardware support in this area.

Super system spec seems to make editing and i1394 preview a treat, but its impact on rendering doesnt seems to scale with system specs.

I use my Minidv cam to preview on a TV, and its just useless on my machine (p866) but have seen this working nicely on a mates P4 PC - render times though werent triple as fast as mine.

Haw1144 wrote on 8/28/2003, 12:00 PM
Where do you even go to adjust the Video Quality? I never knew it existed.. I always rendered out using whatever default values is set!
theigloo wrote on 8/28/2003, 12:27 PM

WhyBe,

Do you have Hyper Threading set to on? If so, 33% isn't bad. As far as windows is concerned, a dual proc machine with HT is a quad proc machine. 33% is 100% of one CPU plus about 25% of another. That's not bad.

Wanna know how to make that 75%? You need to render your stuff to an NTSC DV .avi first. Take that .avi and MPg-2 encode that. Your cpus will go insane.

Essentially what you are doing is 'flatening' your video (borrowed term from photoshop).

You will also get a better render. There should be no difference, but there is - and this is a major flaw with Vegas and I wish they would fix it. I detailed the flaw in this post..

Hope this helps.

Matt
WhyBe wrote on 8/28/2003, 2:41 PM
Yes I do have Hyper-Threading turned on.

Thanks for the tip.