Create and open a new video file on the camera roll for writing.
camera_error_t camera_roll_open_video(camera_handle_t handle, int *fd, char *filename, int namelen, camera_roll_video_fmt_t fmt)
The handle returned by a call to the camera_open() function.
A pointer to the file descriptor. The pointer that is returned pointers an open video file on the camera roll.
A pointer to returned name of the file on the camera roll. Ensure that the array pointed to by filename is at least of size CAMERA_ROLL_NAMELEN.
The size of the buffer provided by the caller as the filename. The maximum size is indicated by the value of CAMERA_ROLL_NAMELEN.
The video file format to create.
The camera roll is a directory on the device where the camera application saves files. The camera service manages unique filenames on behalf of the user.
After you successfully call this function, a file is created and opened for writing. To close the file, you must call the camera_roll_close_video() function.