if not possible rotate gif animated on impress?
In LibreOffice Impress 3.4.4, the option for rotation appears to be greyed-out for animated GIFs (Right click on image, then choose menu options: Position and Size → Rotation)
It’s possible that 3.5, 3.6, or the upcoming 4.0 supports this feature, but as of 3.4.4 I’m afraid the answer is ‘no’.
There are several FOSS programs that can help you rotate an animated GIF before you import it to LibreOffice. If you’re using The GIMP, you can follow these simple steps