Uncompressed AVI stutters only in Vegas

Xcelerate wrote on 7/29/2010, 10:31 PM
I'm getting a little frustrated because I've spent the past week trying to make some proxy files for my AVCHD clips. And while all of my attempts provide smooth frame rates in any media player (Windows Media Player, Media Player Home Cinema, VLC, even DirectX GraphEdit) everything stutters in Vegas.

Eventually I rendered my clips into an uncompressed YV12 avi file, at 960x540, 59.94 fps. Playback begins smooth, but it shortly drops to about 10 frames per second. It's not the CPU (CPU usage is 2%), and it's not the hard drive (fastest notebook hard drive out currently, and it plays smoothly in any other program).

I have no idea what the issue is. I'm using Vegas 8.0c. I sort of wonder if perhaps Vegas isn't loading enough of the video at one time from the hard drive-- i.e. it loads a little bit, plays it, stops to load some more, etc... Would there be some setting under "Internal" in preferences that would fix this?

Thank you.

Comments

musicvid10 wrote on 7/29/2010, 11:12 PM
You would need to reset your project properties to match the media properties of your intermediate, then optimize the preview as described in the knowledgebase (and a few times in the forums).

Uncompressed is not a very efficient intermediate format, either from the standpoint of size or system efficiency. Have you tried Cineform or MXF? There are several other compressed intermediates worth trying as well.