Clip Stuttering

babdi · Post by **babdi** » Thu Sep 27, 2007 10:37 am

I realised that when I apply any transition and play the clip it stutters the first time, subsequently is plays normal. Then again if I change any transition parameter it stutters again returning back to normal playback speed till I change a parameter again.

What could be the reason and how it can be avoided.

AlBunda · Post by **AlBunda** » Thu Sep 27, 2007 10:53 am

Hi, if understand well, you mean that the preview is not smooth when you run it first time.
The reason is that that it is very resource demanding for the computer to render and playback at the same time. Hardly to avoid in my opinion.

skier-hughes · Post by **skier-hughes** » Thu Sep 27, 2007 11:31 am

You have a good processor and a fair bit of ram, but 1.5g is an odd number, evening it up helps, so 1gb or 2 gb from even numbers of sticks when using more than 1, so 1, 2, 4 stick of ram is best.

Your graphics card is quite poor in todays standards, so improving that may help, or checking you have the latest drivers anyway for a start.

Using a seperate drive to the one the operating system on may also help.

What may be happening though is it's rendering and keeping a temp file fo the transition and when you change it, it needs to re-render it and then it's fine again.

babdi · Post by **babdi** » Thu Sep 27, 2007 1:08 pm

skier-hughes wrote:You have a good processor and a fair bit of ram, but 1.5g is an odd number, evening it up helps, so 1gb or 2 gb from even numbers of sticks when using more than 1, so 1, 2, 4 stick of ram is best.

Your graphics card is quite poor in todays standards, so improving that may help, or checking you have the latest drivers anyway for a start.

Using a seperate drive to the one the operating system on may also help.

What may be happening though is it's rendering and keeping a temp file fo the transition and when you change it, it needs to re-render it and then it's fine again.

Thanks skier. Okay. To start with I need to even out RAM sticks ,2) I need to upgrade my Display card to say 512 MB, 3) My video files are on another drive ( 120 GB ), 4) My video card drivers are the latest

I also add that (as suggested by corel knowledge base) I increase my SWAP file size which set to MAX 4096 MB. I thought maybe that should help me a bit. I have changed the resampling quality to "good" from the default "better" in preferences.

I guess i need to fork out some quids to pep up things

Clevo · Post by **Clevo** » Thu Sep 27, 2007 1:13 pm

HI babdi.... I did mention a few of these upgrade recommendations in a previous thread.

I could also be because your are working with mpeg4 files in uncommon variable frame rates in the same project.

If you have your project settings set to a standadrd frame rate the mis matching of frame rates could possibly be asking VS to work harder especially with transitions in between two clips with different frame rates.

skier-hughes · Post by **skier-hughes** » Thu Sep 27, 2007 2:10 pm

Clevo wrote:HI babdi.... I did mention a few of these upgrade recommendations in a previous thread.

I could also be because your are working with mpeg4 files in uncommon variable frame rates in the same project.

If you have your project settings set to a standadrd frame rate the mis matching of frame rates could possibly be asking VS to work harder especially with transitions in between two clips with different frame rates.

You have too good a memory, I base each answeer given on the info supplied in that post. These items wiill surely add to the grief