System and method for adjusting orientation of captured video

摘要

Described herein is a system and method for adjusting the orientation of captured video utilizing the data received from a built-in inertial measurement unit such as an accelerometer. During video capture, the device may be held in a position that is not fully vertical or horizontal, and thus not match the true orientation of a scene. This can cause the captured video to appear rotated during playback at the same angle of rotation as the video capture device. The described system can adjust the playback orientation of the rotated video by utilizing sensor data captured during the same time as the video was captured.

主权项

1. A method of encoding a video captured on a video capture device at two orientations, comprising:
reading orientation data for a first orientation from the video capture, device as a video of a scene is being captured, wherein the first orientation has a first resolution; determining that the video capture device is rotated to a second orientation as the video of the scene is being captured, wherein the second orientation has a second resolution; reading orientation data from the video capture device as a video of the scene is being captured when the video capture device is in the second orientation; generating a rotation matrix based on a relationship between the first orientation and the second orientation; adjusting the orientation of frames of the video captured when the video capture device is in the second orientation to match the orientation of the video captured when the video capture device is in the first orientation; cropping the adjusted frames of the video captured when the video capture device is in the second orientation, the cropped frames having the first resolution; and encoding the cropped frames of the captured video.