choppy editing, adujust cores? 9.0e

seanfl wrote on 9/3/2010, 8:36 AM

I'm working on a project using video files and pictures and am seeing delay between video clips when cross fading. Maybe it's always been that way, but with this new machine it should be much better. It may take a few seconds to catch up with the cross fade and my frame rate drops down to 10 or so, before popping back up to 29.

I noticed that when I open windows task manager, it will show all 8 threads near 100% on rendering, but during playback in the editing window, it only shows every other thread getting much action. Is that normal?

My render times are good (238 seconds on the new render test) but playback is not as smooth as I'd like it. Any ideas?

Core i7 920
Sony Vegas 9.0e
Windows 7 64 bit
SSD for the OS, 1tb fast drive for media.

anything I should look at adjusting?

thank you for guidance.
Sean

Comments

musicvid10 wrote on 9/3/2010, 10:53 AM

Transitions need to be rendered because they do not exist as video files.
There is no guarantee they will render in realtime fast enough to preview smoothly.
If you will use the RAM Preview feature, your transitions will preview smoothly.

seanfl wrote on 9/3/2010, 2:07 PM

thanks music vid. I understand they need to render, should I see them utilize all threads? Right now it only seems to be engaging every other thread (4 of the 8 in task manager) when I play on the timetime.

Sean

ritsmer wrote on 9/4/2010, 1:47 AM

It might help to add more threads - as long as the CPU utilization in Windows Task Manager is not 100 percent, that is.

When previewing AVCHD 1920x1080 50 i (17 Mbps) a simple crossfade will put my 8 physical cores (2 x quad Xeons - but no Hyper Threading) to just over 50 percent usage.

If you get an idea - just try it out - you can hardly spoil anything.

I understand that you have only one harddrive for media - this will slow down your rendering, as Vegas has to read and write a lot of bytes from and to the same disk at the same time. You will probably see better rendering times it you installed a second HDD for output.