I'm trying to do an animation like those of Apple´s advertisings, with an all white background. My problem is, I see the back perfectly white when working on poser, but when I do render the movie, the background becomes black!!

So my question is, how can I make the background white and keep ti that way on my movie???

Top most image is what I see on Poser, below what I get after rendering the movie.

[menu] "Display" >>> "Background Color" <<< set it to White.

Render your movie.

And set render over background. If you have "render over black" chosen, the background won't come into play.

That's exactly my problem.

 

When setting the background to white, everything on screen looks white when working, but when rendering the movie, the background becomes black instead.

Looks to me like we are seeing the GROUND plane in the rendered image. As a first test, select the GROUND, and set visibility 'Off' in its Properties. If that gives you a white background, then either leave the GROUND invisible, or change its material settings and Element Display Style so it will render as white.

Thanks for your help, after playing a little with all the options, I've solved the problem. I'm posting the solution here, just in case someone else has the same problem: When you render a movie (not an image), the compression type used by default is "animation". You gotta choose a different compression type instead and render. After that, doesn't matter which compressor you choose, the background renders perfectly white (even if you pick "animation" again). I would like to point that we work with several copies of Poser, and in all cases the problem was the same, and this was the solution. Why the background renders black instead of white unless you choose a different compressor first, seems to be some bug of Poser.