OHCI preview output framerate during a dissolve

HPV wrote on 12/8/2001, 5:26 PM
I was wondering how much a faster computer and or more memeory helps with the framerate using OHCI preview. I have a P4 1.3ghz with 128MB. If I overlap two DV clips with a dissolve, my system plays at about 8.55 frames per second. Anybody with more ram or faster CPU getting better performance than this? To test, make the clips overlap for about 20 seconds, set a loop region, and watch the frame rate at the bottom of the Vegas preview window. Quality set to peview.

Thanks,
Craig H.

Comments

Jason_Abbott wrote on 12/9/2001, 12:34 AM
I have a P4 1.8GHz with 512MB RAM. I overlapped two DV segments 20.154 seconds. "Preview on External monitor" was about 10.2 fps. Changing between Preview or Best quality made no difference in the framerate. What made a big difference was when I dragged this IE window to the side so I could type this while still watching. It dipped to 6fps for a moment after that.
TRS80 wrote on 12/10/2001, 11:55 PM
I tested an Abit KG7 + 1.4 Athlon/266 + 1 gig memory + Maxotr 60 gb 7200 drive and after testing several different clips, the lowest possible rate I could produce was 8.5 fps. I found the rate varies widely based on the content of the clips. On some tests, the rate never dipped below 18 fps, others went to 12. So, until we have a standard pair of 20 second clips for everyone to test, the fps numbers aren't comparing apples to apples.
Chienworks wrote on 12/11/2001, 1:02 AM
If i may address the premise of this question instead ....

The preview window is never intended to give a real time, full frame rate
display. When doing effects like disolve, the processor just can't keep
up with all the information that needs to be processed. If you really
want to see what the effect is going to look like in real time, you should
pre-render it so that it becomes a finished clip rather than an "effect in
progress".

Or go get yourself a Matrox RT2500 for lots of money and you can edit
in real time. It even comes with a free copy of Acid! ;)
SonyEPM wrote on 12/11/2001, 8:51 AM
"Or go get yourself a Matrox RT2500 for lots of money and you can edit in real time."

This is not supported and you'll need to use Premiere- you'll be able to render to the Matrox codec with Vegas, but that's it.
db wrote on 12/11/2001, 12:29 PM
IMO having another 128mgs RAM will help in overall performance of VV ..ALSO previewing on external monitor improves frame rate ( takes some load off cpu and puts it on your deck/camera) )
jboy wrote on 12/11/2001, 2:00 PM
Or, load up your computer with currently cheap RAM, and use the preview to RAM function in VV 3.0,-works great!