录制视频时，如何为视频设置转换（纵向，景观等）？

Question

如果我应该使用avcaptureconnection的视频oriveation属性，或者设置videoWriterInput的变换属性，或者其他东西？

Answer 1

Seems like AVCaptureConnection's videoOrientation property sets the orientation as it's recording, while the transform property of the videoWriterInput will set a flag for the playback transform.