1 Topic by marauderxp (edited by marauderxp 08-07-2013 12:31:04)

Topic: Stuttering on specific movements

Hi.

Recently I upgraded to an I7 3770K and have been experiencing a stutter when there is a movement of a large object going across the screen or when there's a scene with a flashing light, eg police car lights.
It only happens on certain objects/scenes when there is a big difference. For instance, 95% of the opening credits of Superman Returns is perfectly smooth, but a couple of times when the bright wording appears when there's motion in the background, it will sutter (scene change detection???).
This is not a drop in fps but something else. I can play any kind of fullscreen motion perfectly smooth, but when there's a certain flashing of something in the foreground, it stutters for only 1 second and then is fine.

Fullscreen panning is perfectly smooth unless there is a sudden object or lights flashing onto the screen.

It's a very strange issue and one I didn't have before on my I5?

I have a GTX 580, 8gb RAM, and there are no fps drops (it's always @ 60hz), and cpu usage is always low.

It seems like a scene detection issue?

I have tried so many different settings, I've tried blend adjacent frames and it's a little tiny bit better I think, but the problem is still there.
Tried different decoders, different video renderers (MADVR/EVR etc) and different players.
As I said, before I upgraded to the I7, I didn't have this problem. And I only changed the CPU, nothing else.

Win7
GTX 580
8gb RAM

Appreciate any help. Thanks

  • MAG79
  • SVP developer
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Re: Stuttering on specific movements

marauderxp
It seems like a scene detection issue?
Yes. It is look like a work of scene detection algorithm.

You can get more smoothenes and more fluidity. You can do one or more changes from these ones for this purpose:

Profile settings:
- disable adaptive mode: set frame interpolation mode to uniform;
- use sharpest SVP-shaders: 2.Sharp or 23.Complicated;
- disable artifact masking;
- reduce stuttering at scene changes: set processing of scene changes to Blend adjacent frames.

Expert settings (change file override.js):
- uncomment and increase smooth.scene.limits.scene;
- uncomment and decrease smooth.scene.limits.zero if video have not any noise;
- uncomment and increase smooth.scene.limits.blocks.
read more at wiki-page Plugins: SVPflow

* uncomment = remove double slash (//) in the beginning of line.

Re: Stuttering on specific movements

Hi MAG. Thanks for the reply.

I've actually tried all the different settings and the settings I've always used are Uniform + Complicated shaders. The others are on default, and I've tried changing them and tried setting to blend, but no change. As I said though, it's only started happening since I got the I7?????

But later I will try those other settings in the override.js you mentioned and see how that goes. Thanks.

Re: Stuttering on specific movements

Wow, thankyou so much MAG. I edited those 3 settings in the override.js and guessed the numbers to increase/decrease to and at a quick test, it seems to have fixed the problem.
Still strange though that it didn't happen on the I5???

Anyway, thankyou again smile

  • MAG79
  • SVP developer
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Re: Stuttering on specific movements

marauderxp
Maybe it was not the same video material on i5 and on i7.
Settings of smoothing are identical for both processors: profile set "5g".

Re: Stuttering on specific movements

Well after I upgraded to the I7 and went to watch a movie, I noticed the stuttering, so then I played back the same material that I had watched previously on the I5 and it happened on there too and every other material. So then I tried every different settiing in Advanced/expert and no luck.

I thought it may be to do with hyperthreading, as the I5 didn't have that. So I disabled that, but made no difference.

I even tried interframegui to see if it was one of the settings native to SVP manager, but it still happened after doing a conversion with Interframe. So maybe an Avisynth / buffer issue?
But doesn't matter now, as those settings in the override.js you told me to change have seemed to fix it.

  • Thanks: 3

Re: Stuttering on specific movements

marauderxp

Hi! I have the same problem as you and we have pretty much the same specs so is it okay if I ask you the figures you used for the override.js? I'm not sure by how much I should increase it. by 1,000's? or 100's? etc.