Camera Shaking Problem

[Wingman3d]

I rendered out an animation in 640x360 with no problems. When i rendered out exactly the same in 1600x900 i got some unwanted heavy camera shaking.
The first one was with the same computer on backburner. the 1600 version used two computers. i don't know if this is the reason?
Any idea?

I use vray physical camera.
Vray version 1.5 SP3a
Vray DLL version 1.70.00

[Morbid Angel]

do you have an example of the "shaking"?

[Wingman3d]

Sorry, forgot to post those.
the ok one:
http://s301.photobucket.com/albums/n...nt=640-360.flv
the shaky one:
http://s301.photobucket.com/albums/n...t=1600-900.flv

[tammo]

I had the same problem in some backburner rendered animations with the same vray version on vista and xp 64 bit, max 2010.
In some frames the vray physical camera jumped a few meters up.
I wasn't able to reproduce it so i did't post it under bugs.
The base scene was super large with lots of geometry, particles, and proxies.
It never happened in smaller scenes so its maybe memory related?

[Wingman3d]

i'm on 32bit XP, max 2009.
memory might have something to do with it? Beeing that it doesn't happen on small format output. but it's not a very large scene. i have a few tree-proxies though, but nothing fancy.
I noticed that when i rendered out on 1024 x 576 it also shaked, but not on the same frames. i'll try to render out 1024 format on a single computer tonight.

[Neilg]

I've had this happen before, was random though and only happened on one job.

I think it may have had something to do with the scale, but i'm not sure it was properly resolved. We just rendered those frames again as it only happened a couple of times.

[tammo]

I think such bugs are a nightmare to fix if you can't reproduce them easily.
I rendered the same scene again and there was not a single jump this time.

Its a ghost bug ▼↔▼

[jacksc02]

how far from 0,0,0 is your camera?
There has been a max issue since v2 or v3 that if your camera is too far from 0,0,0 then it starts shaking.

[Wingman3d]

its about (1m,2m,1m) from center of the grid.
one unit = 0,01m
display unit = meters

i ran a series of 1024 renders on backburner, but with only one pc. the problem isn't showing.
could the problem be with backburner? i have used two pc's. both with XP. been using these for 1 year now, never seen this before.

[instinct]

on a short note : beeing far from the origin is not a max bug or issue but a general precision problem with floating point math (basically the more digits before the comma the less digits behind it = lower precision for bigger numbers).

As a second note maybe different locale settings on the renderslaves ? this might lead to inconsitencies if comma or dot are used as delimiters.

Just a shot in the dark.

Regards,
Thorsten

[Wingman3d]

what kind of local settings do you mean?
sounds a bit strange that this all of a sudden should cause problems.

[instinct]

locale, not local :P The language settings wich also determine if it is 10.5 or 10,5
as said was just a shot in the dark.


Regards,
Thorsten

[Wingman3d]

i dont know anything about these settings.
But i have run another test now, and it is definetly one computer that renders out the problem frames. But not all frames are bad. but what i noticed now was that the first few frames was ok, but later at night it started rendering bad ones. I run virus scan and backup at night, so it might be a memory issue.
(I'm on 32bit XP, with 4Gb Ram)

new test: http://s301.photobucket.com/albums/n...amerashake.flv


It seems like the camera changes zoom, focus distance, or aperture or something like that.
Maybe Vlado or anyone can answer if they know of any bugs like this?

[jacksc02]

it does sound like the region settings of one of the machines is different as thorsten has mentioned

[Wingman3d]

Which settings are these, and where do i change them?

But wouldn't all the frames from that pc be bad then? And not only a few?