Rotating a clip

I shot a clip with my smart phone and it looked fine on the PC, When uploaded, the clip appears upside-down. So I rotated it 180 degrees with mpeg streamclip and uploaded again. Still the clip appears upside-down. What can I do?

haha I've never heard of this. Orientation should be set in the codec... So if it plays fine on the computer it shouldn't flip itself on p5.