Video playback slowdown

bbq wiz wrote on 3/11/2006, 5:41 AM
I have been able to run the timeline with video preview box about 1/4 of screen with no playback slowdown.

Now, all of a sudden, just playing back any video causing the frame rate indicator to jump all around up and down, and if I make a very small window it may playback a video event that has had nothing done to it editing wise.

Any ideas what I may have done to have caused this to happen?

Comments

winrockpost wrote on 3/11/2006, 12:29 PM
Did you change your video preview from something (draft,preview,good) to best ?
Jim H wrote on 3/11/2006, 1:28 PM
As your project becomes more complex your preview playback will slow down.
bbq wiz wrote on 3/11/2006, 6:29 PM
I have tried the draft, good, best all have issues. Even just bringing an event on the timeline the audio is choppy. In the preview window in the lower right, I am getting number (Frame rates??) that bounce around, but show 7, 8, maybe 10. Even with a very small preview window. It didn't use to be this way!

rmack350 wrote on 3/11/2006, 10:40 PM
Does it do this in a new project?

One culprit people usually suggest is track opacity. It's easy to accidentally nudge it off of 100% and that can slow things down.

Maybe you've set an envelope like supersampling and forgotten about it? Or maybe it's something else unseen, like an effect applied to the preview window?

If it's happening to a fresh project then these aren't the problem.

Rob Mack
bbq wiz wrote on 3/13/2006, 5:00 AM
It appears I have fixed these issue by going into the audio tab, and sliding the playback buffer tab all the way to right.

I don't believe I changed, but would like to know what the default was for this slider. What is this doing by putting this at this position? Am I causing some other issue.

BBQ Wiz
rmack350 wrote on 3/13/2006, 8:33 AM
I've never adjusted mine and it's set to .10.

Maybe your audio card has a conflict with other hardware? Adjacent PCI cards often share an IRQ, although why this would come up now and not before, I don't know. I'd search this forum for audio related discussions.

Rob Mack
GaryKleiner wrote on 3/13/2006, 10:25 AM
>but would like to know what the default was for this slider. <

Just FYI, double-clicking on any of the sliders returns them to default.
Mine is .10.

Gary