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musicvid10 wrote on 2/6/2010, 9:38 AM

Media/Text generators are the same as transitions and effects, in the context that in order to preview them in real time, Vegas must render on the fly.

By adding motion to your text, you are asking it to do quite a bit more work to render the realtime playback, and skipped frames (stuttering) are often the result.

If your motion titles do not preview smoothly on any given machine, then RAM Preview, Prerender Video, and Render to New Track are your friends. Preview playback differences between individual machines are not a huge consideration, because there is often little one can do to eliminate those differences.

LarsHD wrote on 2/6/2010, 9:47 AM

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musicvid10 wrote on 2/6/2010, 10:01 AM

Well, I admit that the stuttering you see on your big box seems a bit unusual. You may want to look at some tweaks for RAM and Pagefile. I doubt that it's a CPU problem.

EDIT: I tried your test on my lowly laptop. I get full frame rate at Preview/Half (with some tearing), and about 6 fps at Best/Full. Project is 1920x1080, 29.97.

I don't have a fast desktop to compare yours with.

PerroneFord wrote on 2/6/2010, 10:13 AM

Ok, just tried it on my home editing machine. I get perfect playback in anything up to Best quarter. Best half gives me 20-25fps. Best full gives me 8-15.

Core2Duo 1.8GHz
4GB RAM
64bit OS
WinXP64 SP2

Your studio machine has issues. Rebuild it. Or at least try a new video driver.

LarsHD wrote on 2/6/2010, 10:15 AM

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LarsHD wrote on 2/6/2010, 10:18 AM

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musicvid10 wrote on 2/6/2010, 10:21 AM

Are you opening exactly the same project on both machines? What are the project properties?

LarsHD wrote on 2/6/2010, 10:26 AM

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musicvid10 wrote on 2/6/2010, 10:54 AM

Only other thing I can think of to try is reinstall the newest Nvidia drivers.

amendegw wrote on 2/6/2010, 11:21 AM

I'm not particularly happy with either the preview or rendered versions of this test. Here's my system config:

Vegas 9.0c 64bit
Windows Version:Vista 64-bit
RAM:8GB
Processor:Intel Core 2 Quad Q9550, 2.83Ghz
Video Card:nVidia Gforce 9500 GT

I did notice something that puzzles me. I may be a clue, or it may be irrelevant or it may be my cluelessness (is that a word?).

When I set up the project as Progressive and go to the Render Templates, the only ones with equal signs ("=") are the 60i templates. If I right-click on the media event, it shows as 29.97 Progressive.

Is this a bug? Or am I doing something dumb?

Project Properties:

...Jerry

LarsHD wrote on 2/6/2010, 11:33 AM

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LarsHD wrote on 2/6/2010, 11:36 AM

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amendegw wrote on 2/6/2010, 11:37 AM

"So Jerry, you're getting stutter when playing this live from within Vegas too right?Yes, but it is minimal when previewed at Best/Quarter. At that setting (and the renders), I'd call it more of a "wobble" than a stutter.

...Jerry

Edit: After further analysis (and thought), I think what I'm seeing at Preview Best/Quarter & the renders is... the motion is just too fast for 30p to handle smoothly. However, it is definitely a stutter at Best/Full.

LarsHD wrote on 2/6/2010, 11:43 AM

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LarsHD wrote on 2/6/2010, 11:51 AM

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LarsHD wrote on 2/6/2010, 11:56 AM

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LarsHD wrote on 2/6/2010, 11:58 AM

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LarsHD wrote on 2/6/2010, 12:00 PM

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LarsHD wrote on 2/6/2010, 12:13 PM

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LarsHD wrote on 2/6/2010, 12:15 PM

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farss wrote on 2/6/2010, 12:33 PM

Stutter can be caused be the refresh rate of the display compared to the fps of the video.

Bob.

LoTN wrote on 2/6/2010, 12:43 PM

I'm not particularly happy with either the preview or rendered versions of this test.

I am quite "happy" to discover I am not alone to face such issue. I posted a while ago about a similar issue with simple text media and track motion (topic). Farss was kind enough to have a try with it and was confident he could fix it but we both ended in the same problem.

I have tried different fps setup, different motion speeds. whether it is preview or rendered file the playback gets more or less smooth (depending on project setup / motion speed). One thing I've learn't: slow motion speed is ok. It looks like that this has something to do with the amount of moved pixels (parity too ?) and the fps.

On my system: playing with motion blur and supersampling wasn't helpful unless the blur amount was too strong.

I finally gave up trying to get a 10 seconds text animation with Vegas.

LarsHD wrote on 2/6/2010, 12:53 PM

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farss wrote on 2/6/2010, 12:54 PM

One thing you didn't specify is your Preview settings!

What state are the following in ??:

1) Scale video.

2) Aspect Ratio

3) Auto Adjust size / quality.

I'm most interested in 3)

Also do you have the video scopes active??

Bob.