Selected object re-render

[Arnold Sher]

Hi everyone,

 

I have a weird problem. We did animation for a client about 4 years ago. We got a request from a client to change signage on the shopping which happens to be on the glass facade. We cannot change it post production as the signage does not sit on the backing board but rather on the glass and the aluminum framework and thus requires a re-render of about 2000 frames. We would prefer not to re-render 2000 frames due time and budget constraints and thought we found a perfect solution by re-rendering just the shopfronts that are effected. It works really well and the lighting is correct. Done!!!...and here is a problem, every frame that gets rendered, leaves the frame before that and as the frames get rendered it almost creates a tail. We thought that this is only in the frame buffer and that the alpha channel is still correct and we will be able to get rid of in after effects, wrong, it is doing it in alpha as well. What are we missing??? Help!!!I have attached frame 1 and frame 130[ATTACH=CONFIG]56776[/ATTACH]

[James Vella]

Looks like when you rendered you did not select 'clear frame buffer'.