Problem rendering sped-up clips

Dark Puck wrote on 2/14/2009, 10:56 AM
Okay, this problem has been affecting me since about mid-June through two different computers, Vegas Movie Studio Platinum 8 _and_ 9, and through Windows XP and Vista. The frustrating part is that this doesn't always happen.

My problem is that when I'm rendering a video, and I've sped up clips, the places where those clips are will come up black about 8/10s of the time. Rendering a video multiple times to get it to work is time-consuming and frustrating. Does anyone have a solution for this?

I'm currently using VMS Platinum 9.0 and Windows Vista.

Comments

Chienworks wrote on 2/14/2009, 12:08 PM
What type of clips are they? Where did they come from? How are you speeding them up?
Dark Puck wrote on 2/14/2009, 1:06 PM
They're .avi clips encoded by using Auto GK. To speed them up, I use the ctrl+click/drag method. I when I use the ctrl+click/drag method for slowing a clip down, I don't run into the same problem, for the record.
Dark Puck wrote on 2/18/2009, 9:39 AM
Does anybody have any suggestions? I kind of need this video to be done soon.
jetdv wrote on 2/18/2009, 10:04 AM
My only suggestion would be to try rendering to something like standard DV-AVI and then try speeding that file up instead. I'm guessing it's a codec related issue.
OhMyGosh wrote on 2/18/2009, 10:29 AM
Hi Dark,
Until someone smarter replies, the one thought I had was to highlight the problem areas, go to tools>selectively prerender video (Shift + M for short) and try that. Effects, transitions, changes in speed, etc. all can be pretty tough on the ole processor, so prerendering them may help. Let us know if this helps at all. Cin
Dark Puck wrote on 2/18/2009, 12:52 PM
That doesn't seem to have done the trick -- even when I prerendered it, the product came out as black in the two videos I tried it in. The audio is still there, just not the visual.
SPFLDnet wrote on 3/30/2009, 4:49 PM
The same thing is happening to me with unaltered avi clips. I had a video with avi clips and Quick-time clips on the same track. The avi clips rendered black, but the quick-time was consistent. It's like Russian Roulette.

I also use Newtek Lightwave 3D and render animation as Avi files, but I use an mpeg3 codec. Those clips seem to consistently show up too, but I'll need to experiment further and see if I can reproduce the results. Files may need to be converted.