Transitions choppy or not happening in Preview window

VEGAS Pro

Transitions choppy or not happening in Preview window

Posted by Ron Whitaker on August 3, 2011 at 12:18 am

I have a couple of very simple clips next to each other on one track in the timeline.

I click and drag the right-most clip, so that it overlaps the left-most clip, creating a transition.

When I press the Spacebar to play the clip and transition, it doesn’t show in the Preview window in a smooth manner. The transition actually doesn’t show at all. As the Playhead passes over the transition area, the Preview stops, then skips to a frame on the next clip and continues playing.

I thought it was perhaps a RAM issue (I have 4GB of RAM on a notebook with an Intel i5 processor and 500GB hard drive), but I checked the memory usage in the Task Manager, and according to the reading, my system is not using that much RAM.

What could be causing this?

Thank you.

John Rofrano replied 14 years, 9 months ago 4 Members · 5 Replies
5 Replies

Nigel O’neill
August 3, 2011 at 2:45 am

The cause could be your media or CPU.

If you are using AVCHD footage, it is highly compressed and requires horse power to edit smoothly.

The first generation i5 processors Intel made were not quite up to the task of video editing. That tended to be the realm of the i7 and second generation i7 processors. AMD Hexacore CPU’s are also quite good for editing.

My system specs: Intel i7 970, 12GB RAM, ASUS P6T, Vegas Pro 10e (x32/x64), Windows 7 x64 Ultimate, Vegas Production Assistant 1.0, VASST Ultimate S Pro 4.1, Neat Video Pro 2.6
Steve Rhoden
August 3, 2011 at 6:07 am

You also didnt mention what video format or which Vegas version you
have there.
Why dont you use the Build Dynamic ram preview to preview your
edits gradually as you go along?

Steve Rhoden
(Cow Leader)
Film Maker
Filmex Creative Media.
1-876-832-4956
https://filmex-creative-media.blogspot.com/
John Rofrano
August 3, 2011 at 4:29 pm

Use should use Dynamic RAM Preview (Shift+B) to preview your transitions smoothly if your PC it’s up the task of smooth playback.

~jr

http://www.johnrofrano.com
http://www.vasst.com
Ron Whitaker
August 4, 2011 at 3:51 am

OK.

I decided to do a system check again during playback of a couple of video clips with a simple crossfade.

In the Windows Task Manager, the most the CPU usage indicated during playback was 50%. Would only a 50% CPU usage amount cause the simple crossfade to be choppy–actually the crossfade doesn’t even show in the Preview window, the playhead simply keeps going and eventually the preview catches up and jumps to that point.

Again, I have an Acer system (I bought it this past October) with an i5 processor, 4GB of RAM. I’m running Sony Vegas HD 11.

Thanks for any assistance.
John Rofrano
August 4, 2011 at 1:32 pm

Movie Studio HD 11 should handle AVCHD pretty well but my QuadCore can’t play transitions smoothly with AVCHD so I can’t imagine a laptop Core i5 DualCore would (I assume your source is AVCHD). You really need a Core i7 to handle AVCHD and even then transitions might not play back smoothly. AVCHD is just a hard format to edit.

~jr

http://www.johnrofrano.com
http://www.vasst.com

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