Irender movie frames are "washed out"

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Permalink Reply by Rich Hart on March 12, 2012 at 10:26am

It looks like the sun is being turned off and on...

Any chance that you could send me the model, or a stripped down version of it, where I could duplicate this.

Or if you could zip up the batch folder and send me that.

Was Lock Tone Operator checked?

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Permalink Reply by Ronald Lubman, RA on March 12, 2012 at 10:56am

My question is still this: Regardless of my settings, why did the frames alternate with washout and good for only 60 to 80 some odd frames and then the rest of the 1100 frames all rendered properly?  I wasn't aware of the final movie problems until the 8 hour sequence was finished.

Thanks,

RL

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Permalink Reply by Rich Hart on March 12, 2012 at 11:07am

I don't know. That's why I was hoping for the model.

Perhaps there is a bug in our sun position calculations between frames, or the the Lock Tone Operator setting is causing problems.

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Permalink Reply by Ronald Lubman, RA on March 12, 2012 at 11:46am

Thanks Rich,

I've attached a zip of the file.

Attachments:

• BRONX TREES2.skp.zip, 3 MB

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Permalink Reply by Ronald Lubman, RA on March 15, 2012 at 8:52am

Ronald Lubman, RA said:

Hi Rich,

I know that you're a busy guy.  In one of your previous replies to my washed out video, you asked for my model.  I uploaded a zip of  it several days ago and I never received a response.  Hopefully you can come up with an answer in the near future.

Many thanks,

RL

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Permalink Reply by Rich Hart on March 15, 2012 at 9:38am

I was able to duplicate what you're seeing.

I also deleted all geometry in the model and just placed a single cube in the model, and I could see the change in illumination between the frames between the first 2 scenes.

I haven't figured out how to fix it yet though.

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Permalink Reply by Ronald Lubman, RA on March 15, 2012 at 10:36am

I'm anxious to see how you finally resolve this.

Thanks for your time, 

RL

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Permalink Reply by Ronald Lubman, RA on April 1, 2012 at 8:30am

Hi Rich,

It's been several weeks since my last inquiry.  

I wonder if you've made any progress in determining why the movie flickers?

Thanks,

RL

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Permalink Reply by Rich Hart on April 2, 2012 at 3:53pm

Sorry that it took so long to get to this. At first I thought it might be related to the Lock Tone Operator setting, but it doesn't appear to be that.

I now believe it related to the fact that the starting view is pointed straight down and we are calculating the "Up Vector" for the rendering incorrectly, and perhaps that affects the lighting during that transition.

I'm looking into it.

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Permalink Reply by Rich Hart on April 2, 2012 at 6:01pm

I think the answer to this problem may be that one scene did not have "Shadow Setting" set to be included in the animation.

I stripped your model down to less geometry with just 2 scenes to make it easier to inverstigate. Since I was seeing flashing between the scenes "v1" and "Scene 3", I created an animation using just those 2 scenes, with 10 frames between them. I rendered to png files, instead of creating and AVI file, and I got these images as a result:

with widely diferent lighting.

I noticed that scene "v1" was not set to include the sun setting in the animation:

So I checked "Shadow Settings" for scene "v1" and ran the animation again and got these files:

So that may be the answer. I assume we need to fix the software to use the sun setting of the last scene, or the next one if it's the first, if a scene does not have any sun settings saved with it.

Please see if you think that might be the problem that you are having.

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