Movie refactoring: new FFMPEGMovie class and improved synchronization.

Change-Id: I2e0daa9a77dd61c6e274f94cafa46938c557a478
New FrameConverter class

Change-Id: I807a186772f5e808495cd5d8e3137a432c2d112d
Merged Movie refactoring and DynamicTexture fixes

Change-Id: Ib1f2ebddd7983927c2fe9a607322444b4d6d87a6