Orientation Run time

[chirag225]

Can we change Preview orientation when stremming is run like periscope have

[chenliming777]

/// 视频输出方向
@Property (nonatomic, assign) UIInterfaceOrientation outputImageOrientation;

/// 自动旋转(这里只支持 left 变 right portrait 变 portraitUpsideDown)
@Property (nonatomic, assign) BOOL autorotate;