Everything is at 30fps - why 25.002 in Preview?

Grazie wrote on 11/27/2009, 3:28 AM

I have been carefully doing everything by the book:

Video/Capture at 30fps

Project at 30fps

Encode into 30fps

But playback, in Vegas Preview, is at 25.002? That's from "GOOD" down to "DRAFT". Anyway it IS a finished encode.

Why?

In any event, the final showing to BRAVIA is smooth as silk. And to be fair, it "looks" ok-ish at 25.002, in the Preview. So this is more a WHY and not that it SHOULD be. Or should it be 30fps? Actually it does look a tad jerky . . ..

Grazie

Comments

farss wrote on 11/27/2009, 5:48 AM

What does media properties tell you it should be played at?

As you're not applying any FXs the impact of Good to Draft is probably next to nothing. If the file is HUGE and the disk system cannot keep up then playback fps will suffer and could be quite constant.
What happens if you do a RAM Preview?

Bob.

Christian de Godzinsky wrote on 11/27/2009, 6:38 AM

Hi,

I assume you are on 9.0c? As I am - still for a day or so.

I have noticed something similarly spooky, that might be related to your problem:

I have 1920 x 1080 (50i) AVCDH on the timeline, the project set to the same settings. Preview is set at best/full. 9.0c is able to run AVCHD preview at these settings at 25fps, even during a crossfade of TWO tracks. Ok - I have a fast machine.

When I say that the preview is at 25fps - then I am referring to the NUMBER you see under the preview window. It stays steadily at 25 fps - even when the video in the preview window is a tad jerky - as you call it. (clearly less than 25 fps). At the same time the external preview (via firewire to a SD cam and onto a PAL 50Hz CRT monitor) is smooth at a baby's *ss. In other words, the preview is occasionally choppy even if Vegas reports full framerate on preview.... Are SCS fooling us, or is this justa another bug?

Have you Grazie tried how the external preview works if switched on? I assume you have such a possibility?

Christian