Skype video is upside down on Ubuntu 12.4

Error

Skype video appears upside down on Ubuntu 12.4 using built-in webcam ( Lenovo )

Solution

It seems that the webcam is physically positioned upside down already and needs some software workaround

1- Install  "libv4l"

apt-add-repository ppa:libv4l/stable
apt-get update
apt-get upgrade 

apt-get install libv4l-0:i386
 

Note: if you are on a 64bit machine, you will need to install the 32bit version

2- Run Skype using this command

export LIBV4LCONTROL_FLAGS=2 && LD_PRELOAD=/usr/lib/i386-linux-gnu/libv4l/v4l1compat.so skype


Worked for me