@Ceciliabr

I have tested, and tested, and tested again, and again, and I have found nothing wrong.

Regarding the problem of video rendering, everything works correctly?
On my side it's random for a new simple project: a single object and a linear or circular camera path.

Myself, I would rather that the semi-transparent part of an uncompleted rendering could be completely transparent, but it works perfectly well like it i is!

It is possible but I did not propose it because we do not see the size of the image.

In my opinion, PVR-1.8_betaTest2 is a release candidate (if it hasn't already been released without my knowledge)

If everything is good on your side, I think that [font=courier new]version 1.8[/font] will soon be published.
The next big innovation will be the addition of the YafaRay rendering engine when its beta phase is over.

Enko