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General => Image Sharing => Topic started by: Henry Blewer on June 07, 2011, 08:40:06 AM

Title: 3 second animation test.
Post by: Henry Blewer on June 07, 2011, 08:40:06 AM
http://www.youtube.com/watch?v=rYCDVHyEG14

A test to see how my settings work for animation. Help would be greatly appreciated.

There is a little atmosphere flickering and a shadow in the lower corner moves oddly. VistaPro 3 and 4 had similar issues.

Render settings I used.

Detail 0.55
AA 6 with raytraced atmosphere
Cubic B-Spline Anti-aliasing bloom On
Detail blending 0.5
Microvertex jittering On
Detail jittering On
Ray detail region padding 0.375
GI prepass padding 0.275
Atmosphere samples 8

You may need to download this and loop it to see the result better.
Title: Re: 1 second animation test.
Post by: Henry Blewer on June 07, 2011, 11:10:16 AM
I guess I used fairly descent settings... Would increasing the atmosphere quality setting help with the flicker? It's not bad, but I find it annoying.
Title: Re: 1 second animation test.
Post by: Oshyan on June 07, 2011, 02:48:36 PM
I presume you're using GI. What are your GI settings?

- Oshyan
Title: Re: 1 second animation test.
Post by: Henry Blewer on June 07, 2011, 05:58:29 PM
I don't have the GI checked in the render settings. The environment setting is at the default.

I think I can smooth this out using the Blender compositor nodes. Did you look at it? The flicker is not a huge problem, but not good.

I did a test using the H.264 codec. It's better. The shadow glitch is gone.
Title: Re: 1 second animation test.
Post by: Oshyan on June 07, 2011, 06:39:50 PM
What you're saying is a bit confusing. You don't have GI "checked" in the render settings, but there are no check boxes for it. If GI Relative Detail is not 0, and the Enviro Light is enabled, GI will be used. Does your render have a GI Prepass phase?

Additionally, you say the "shadow glitch" is gone by simply changing your video codec. So perhaps it's not a rendering issue at all? Or is this a different issue than the flickering? Do you have a way of previewing your animation prior to compressing to video? I use Djv View (http://djv.sourceforge.net/) (render to TIFF, it does not support BMP), and it's great for getting a realtime view of rendered frames before compressing to video. If you can confirm that it's a problem even before compression, then we can work on render settings to resolve it.

- Oshyan
Title: Re: 1 second animation test.
Post by: Henry Blewer on June 07, 2011, 07:31:17 PM
What I meant was that GI surface detail in the render settings quality tab is not checked. Also, Blender will play image sequences before compression. The flicker is more noticeable playing back just the image sequence in Blender.

The shadow glitch seems to be a compression artifact from the first 20 frames. It may be a Blender thing. Rendering 15 extra frames at the start and end of the anim, then clipping the anim after compression may give a better averaging(?) over the entire animation.

I will probably have my new rig running by September (I7 system). The main reason I bought the animation package is for a project where I'll need motion blur for a still image (wheels turning on a vehicle, so it looks like it was moving, not parked.)

A guide of some sort of what settings to use for animation would be great. It took me a couple hours to ferret out the settings I used in the forum threads.

I did change the GI settings to GI relative detail 1, GI sample quality 5, GI blur radius is 20.
Title: Re: 1 second animation test.
Post by: Oshyan on June 07, 2011, 07:39:08 PM
Ok, GI Surface Detail wasn't what I was referring to though when I said "you are using GI". Whether GI Surface Detail is enabled has no effect on whether GI is used, it's just an additional enhancement when GI *is* rendered. As I said, if GI Relative Detail is greater than 0 and the Enviro Light is enabled, GI should be calculated. In your case it sounds like GI *was* enabled.

When you say you "did change the GI settings", do you mean those are the settings you used in the 1 second animation you've posted, or you changed to those GI settings since posting this thread and getting some feedback? It looks like the problem may be GI related so I would try GI detail 2, sample quality 6 next. You may also try slightly increasing atmosphere samples, maybe to 12, as this can have an effect on how Atmosphere GI samples are calculated.

- Oshyan
Title: Re: 1 second animation test.
Post by: Henry Blewer on June 07, 2011, 07:50:00 PM
Cool. Thanks Oshyan. I have about 2 seconds of frames rendered now. I am going to let the current settings continue while I am at work. That should give me nearly 3 seconds to play with. I test out the settings you've suggested on something more interesting. This landscape was quick and dirty for experiments.
Title: Re: 1 second animation test.
Post by: Oshyan on June 07, 2011, 07:51:34 PM
Ok. Still curious if the GI settings you mentioned are what you were already using or not.

- Oshyan
Title: Re: 1 second animation test.
Post by: Henry Blewer on June 07, 2011, 08:11:52 PM
I am still using the first setup's settings.
Title: Re: 1 second animation test.
Post by: Oshyan on June 07, 2011, 09:10:36 PM
But you don't mention what the GI settings were in your first post. :P

- Oshyan
Title: Re: 1 second animation test.
Post by: Henry Blewer on June 07, 2011, 09:42:17 PM
GI settings to GI relative detail 1, GI sample quality 5, GI blur radius is 20.

No, I did not think they were turned on because the GI surface details checkbox was not checked.
Title: Re: 1 second animation test.
Post by: Henry Blewer on June 08, 2011, 09:02:06 AM
I have 3 seconds now. I think the atmosphere quality samples are making the trouble. I'll try 16 on the next. This uses only 8 samples and ray traced atmosphere. 8 samples would probably work on a still image.

The GI detail and sample quality I would prefer the avoid using. But it may be necessary. Uploading the video to YouTube.

http://www.youtube.com/watch?v=NPAd1PtnEwk&feature=mfu_in_order&list=UL
Title: Re: 3 second animation test.
Post by: Seth on June 08, 2011, 09:32:30 AM
use Fill Lights instead of GI, and you won't have flickering animation :)
Title: Re: 3 second animation test.
Post by: Henry Blewer on June 08, 2011, 11:03:59 AM
I'll try it. Thanks for the idea. It would probably render faster also.
Title: Re: 3 second animation test.
Post by: Seth on June 08, 2011, 11:11:45 AM
not really, but that is the only solution I can give you for flicker free animation so far :)
and I tried a lot of settings 10 hours a day the last 2 months, but the fill lights (as Oshyan's file) is the only working solution for all kind of animations ;)
Title: Re: 3 second animation test.
Post by: Kadri on June 08, 2011, 11:52:25 AM
Quote from: Seth on June 08, 2011, 11:11:45 AM
not really, but that is the only solution I can give you for flicker free animation so far :)
and I tried a lot of settings 10 hours a day the last 2 months, but the fill lights (as Oshyan's file) is the only working solution for all kind of animations ;)

Seth i am not sure , maybe it is discussed here before , but did you tried to render to 2 times the required resolution ?
Say for 800 x 600 to render in 1600 x 1200.
Of course some settings should be lower to not make the render time too long.
Unfortunately this could offset the potential benefits .
I can not test these things. Just curious :)
Title: Re: 3 second animation test.
Post by: Seth on June 08, 2011, 01:59:43 PM
errrr... i am rendering 720HD so.... it might be difficult to render it twice bigger, considering the render time (time=money).
Plus, the fill lights techniques looks good enough, so I keep myself out of GI right now ;)
but I remember this discussion too...
Title: Re: 3 second animation test.
Post by: Kadri on June 08, 2011, 02:03:17 PM

Yeah, if it works there is no problem  :)
Title: Re: 3 second animation test.
Post by: Henry Blewer on June 10, 2011, 06:24:37 PM
I have some settings now that seem to work very well. 12 minutes per frame render time. No atmosphere flicker. I'll post the tgd when I have the animation fully rendered. Image size is 720 x 480.