Author Topic: Corrupt Frames, is my Card isn´t?  (Read 19321 times)

rapan

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Re: GLITCHES, CORRUPT FRAMES - Someone does this happen?
« Reply #60 on: August 10, 2012, 10:46:04 am »
August 10, 2012, 10:46:04 am
After many hours with Lumion opened the glitches came back. I wanted to record it using FRAPS
and know what? everytime I start recording, the problem disappears!
So I recorded it via external camera.
See that the artifacts appear only in the beginning of the clip though in rendering the are much later.
They also appear in other clips but only in editor. They never show up in the rendered movie.


Re: GLITCHES, CORRUPT FRAMES - Someone does this happen?
« Reply #61 on: August 10, 2012, 11:29:36 am »
August 10, 2012, 11:29:36 am
Hi rapan, thanks a lot for taking the time to post the renderings as well as the video.

As far as I can tell, we are indeed dealing with 2 separate issues.

1) The faint overlays on the renderings look similar to Nicolás'. I can see that your driver version is 295.73 (the same as Nicolás previously used), but who is the manufacturer of your GTX 460? Gigabyte?

2) We would like to investigate the strange glitch that appears when you drag the timeline. Can you export the full scene via the Home menu and upload it to WeTransfer please? The email address should be remko [at] act-3d.com since he has a GTX 480 at home which he can use for the test.
IMPORTANT: Please do not send private messages and emails to members of staff - unless we specifically ask you to send us sensitive information, for example License Keys.

Nico RVArq.com

    Reputation: 58
Re: GLITCHES, CORRUPT FRAMES - Someone does this happen?
« Reply #62 on: August 10, 2012, 11:49:31 am »
August 10, 2012, 11:49:31 am
Morten, in my case, the GTX480 is from Gigabyte but the GTX470 is from Point of View.

Re: GLITCHES, CORRUPT FRAMES - Someone does this happen?
« Reply #63 on: August 10, 2012, 11:54:39 am »
August 10, 2012, 11:54:39 am
Good, so that confirms that it doesn't seem to matter which manufacturer the card is from.
IMPORTANT: Please do not send private messages and emails to members of staff - unless we specifically ask you to send us sensitive information, for example License Keys.

rapan

    Reputation: 4
Re: GLITCHES, CORRUPT FRAMES - Someone does this happen?
« Reply #64 on: August 10, 2012, 01:18:08 pm »
August 10, 2012, 01:18:08 pm
My GTX 460 comes from ASUS.

I have just sent my scene to Remko.

Re: GLITCHES, CORRUPT FRAMES - Someone does this happen?
« Reply #65 on: August 10, 2012, 03:20:15 pm »
August 10, 2012, 03:20:15 pm
This is great. We've been getting error reports like this lately but we haven't been able to replicate or reproduce the problem until now. First we thought it was restricted to the GeForce 4xx family but as it seems the problem has also been reported on other NVIDIA cards.

You shots and movie finally gives us some clues what is going on. Until now we did not see anything except for glitches in the final movie.

We'll run some more tests on other hardware and see what we can find. Your scene renders perfectly on my computer but we will try more computers.

Is there any software running in the background?

rapan

    Reputation: 4
Re: GLITCHES, CORRUPT FRAMES - Someone does this happen?
« Reply #66 on: August 10, 2012, 03:32:06 pm »
August 10, 2012, 03:32:06 pm
Is there any software running in the background?

Nothing at all - just Lumion.
Max, PS and other stuff on other machines.
The system is quite fresh, installed about two months ago.

Re: GLITCHES, CORRUPT FRAMES - Someone does this happen?
« Reply #67 on: August 10, 2012, 03:41:27 pm »
August 10, 2012, 03:41:27 pm
Nothing at all - just Lumion.
Max, PS and other stuff on other machines.
The system is quite fresh, installed about two months ago.

I saw you have a 1024MB GFX card. I have a 4096MB GFX card and most other cards here also have a lot of memory. Maybe gfx memory can be the issue. Can you try your tests again but before you do activate "Low memory mode" in the settings panel. Maybe this helps. Preferably you do not want to use this mode but 1GB is a bit on the low side for a relatively big scene. Maybe it just does not fit.

By the way: I merged this topic with a previous discussion about the same error.

rapan

    Reputation: 4
Re: GLITCHES, CORRUPT FRAMES - Someone does this happen?
« Reply #68 on: August 10, 2012, 04:01:09 pm »
August 10, 2012, 04:01:09 pm
Can you try your tests again but before you do activate "Low memory mode" in the settings panel.

I have turned on "Low memory mode" some time ago when the problems started and now it's still on. So it didn't help.

Re: GLITCHES, CORRUPT FRAMES - Someone does this happen?
« Reply #69 on: August 12, 2012, 06:30:42 pm »
August 12, 2012, 06:30:42 pm
I have turned on "Low memory mode" some time ago when the problems started and now it's still on. So it didn't help.

You should turn it off normally because it will improve render times and also texture quality will be better with low mem mode OFF.

I tried to reproduce on several computers but still I do not get this bug.

What happens if you delete all the trees, save and quit and then load the scene again. Same problem?

rapan

    Reputation: 4
Re: GLITCHES, CORRUPT FRAMES - Someone does this happen?
« Reply #70 on: August 12, 2012, 11:31:23 pm »
August 12, 2012, 11:31:23 pm
What happens if you delete all the trees, save and quit and then load the scene again. Same problem?

This is good trace. No trees - no problem.
Even one single tree can cause those artifacts in editor.
The artifacts are strictly related to size and position of that tree.
When sized down - the artifacts become small but still around the tree.
It looks like the artifact is mapped with trunk texture.
Grass, plants, flower and cactus does not cause the problem - though I didn't test everything.

And I come back to my earlier observation - without the Contrail effect the artifacts does not appear or I haven't noticed.

Re: GLITCHES, CORRUPT FRAMES - Someone does this happen?
« Reply #71 on: August 13, 2012, 09:21:51 pm »
August 13, 2012, 09:21:51 pm
This is good trace. No trees - no problem.
Even one single tree can cause those artifacts in editor.
The artifacts are strictly related to size and position of that tree.
When sized down - the artifacts become small but still around the tree.
It looks like the artifact is mapped with trunk texture.
Grass, plants, flower and cactus does not cause the problem - though I didn't test everything.

And I come back to my earlier observation - without the Contrail effect the artifacts does not appear or I haven't noticed.

Ah! This is a huge hint. Many of the weird problems we have come from speedtree. In the latest version we fixed a bug in the speedtree library which caused the sky to corrupt in some cases. Looks like another bug popped up. The bugs we have with speedtree are usually this weird... And the search continues.

Nico RVArq.com

    Reputation: 58
Re: Corrupt Frames, is my Card isn´t?
« Reply #72 on: August 16, 2012, 03:25:25 pm »
August 16, 2012, 03:25:25 pm
All the works I delivery also the problem of Glitches, is hurting me a lot to the quality of the video waves generated at blank walls and ceilings and should not happen, looking at the work of Derek, I've noticed too.
And this morning I came up to output image format other than JPG, but of course, the JPG fu.. compression! How could I be so stupid!, I'm giving a very poor quality, and it occurs to me now.
The difference is remarkable, attached sample file in Dropbox.
Perhaps it should be aware other users to forget that format.
This is the link for Dropbox files comparation of JPG and TGA:
https://www.dropbox.com/s/9sxbizictpgo24v/jpg%20tga.rar
Greetings. Nicolás

NOTE: The TGA file, no shown here in the forum, download both and compare the best qualities.

Re: Corrupt Frames, is my Card isn´t?
« Reply #73 on: August 16, 2012, 03:49:33 pm »
August 16, 2012, 03:49:33 pm
This is a completely unrelated error. The problem is caused by JPEG compression. When you save the image in Photoshop in JPG you have similar results. When you save a lossless format you do not have these problems.

The problem is caused by the way JPG works. When something has little detail there are less bits assigned because visually you won't be able to see it. Also JPG works in the YUV space so the RGB image gets converted to YUV and then stored in JPG format. When you view the file the jpg is extracted and converted from YUV to RGB. This is why the artifact looks a bit green I think.

In practice though we can sometimes see these minor artifacts. Usually they are not visible but in this case we have a very fine gradient over a smooth surface.

After some tests I concluded that Photoshop has similar artifacts but they are a bit less. Maybe we can take a look at an alternative JPG compressor instead of the standard DirectX version.

Nico RVArq.com

    Reputation: 58
Re: Corrupt Frames, is my Card isn´t?
« Reply #74 on: August 16, 2012, 03:55:54 pm »
August 16, 2012, 03:55:54 pm
Is normal the difference if one output JPG is 208.96 KB and the TGA 2700.03 KB  :-\
What gets on my nerves is that I don´t compare until now.
I don´t want to blame anyone, but previously only obtained TGA from Lumion, and perhaps Yes, is necessary to review the JPG compression format that is preset in Lumion and it seems a very bud result. :)