Rotoscoped BG keeps moving in mantra viewer

[bhaveshpandey]

I'm working on a project where I have matchmoved a footage and then exported the camera solve from Boujou 4

to Houdini 9.5.

the issue is when i render a particular frame out and use the display options in mantra viewer, its works fine.

BUT

if i render the same frame again consecutively, there's a constant increment in the BG in the mantra viewer.

because of this half the time i believed that my camera solve was faulty. but it was only later when i observed that the BG frames keep incrementing

even if you fire renders on the same frame. (if i'm unfortunate, it might be possible that my solve's faulty too)

Has anyone else also faced this issue??

Is there any way out of this??

Why does this happen??

any suggestions are much appreciated

cheers.

[stevenong]

Hi Bhavesh,

If you load the BG into mplay with $F4 in the filename, the frame will increment each time you render as that is the default. If you know you're gonna work on just that frame, you should set the bg filename to the same frame, for example, foo.0024.jpg.

If you prefer to load in the bg sequence into mplay when test rendering, please refer to my post in this thread.

Cheers!

steven

[bhaveshpandey]

hey thanks a lot Steven, I actually never thought about using just one single image

thanks a ton.

PS: also could you please check out this thread and suggest me some way to get out of the situation i'm stuck in.

http://forums.odforce.net/index.php?showtopic=8568

thanks again