Abstract: Implementations relate to providing HDR video formats with low dynamic range compatibility. In some implementations, a method includes obtaining a first video including first frames having a first dynamic range and a second video including corresponding second frames having a second dynamic range that is different than the first dynamic range. A recovery map track is generated, including a recovery map frame for each first frame and corresponding second frame, the recovery map frame encoding differences in luminances between portions of the first frame and corresponding second frame. The first video and recovery map track are provided in a video container that is readable to display the first video or to display a derived video based on applying the recovery map track to the first video. The derived video includes derived frames that have a dynamic range different than the first dynamic range.

Abstract: Various implementations include a rotor control device including a shaft extending along a rotational axis, a hub, first and second pitch control components, and a swashplate. The hub has a hub axis and is hingedly coupled to the shaft such that the hub axis is perpendicular to the rotational axis and stationary relative to the shaft. The hub is hingable about the hub axis relative to the rotational axis. The first pitch control component is coupled to the hub. The swashplate has the second pitch control component hingedly engaging the first pitch control component. The swashplate is movable along a swashplate plane transverse to the rotational axis. The shaft is rotatable about the rotational axis relative to the swashplate. Movement of the swashplate along the swashplate plane relative to the rotational axis causes the hub to periodically hinge about the hinge axis as the hub rotates about the rotational axis.

Abstract: Various implementations include a rotor control device including a shaft extending along a rotational axis, a hub, first and second pitch control components, and a swashplate. The hub has a hub axis and is hingedly coupled to the shaft such that the hub axis is perpendicular to the rotational axis and stationary relative to the shaft. The hub is hingable about the hub axis relative to the rotational axis. The first pitch control component is coupled to the hub. The swashplate has the second pitch control component hingedly engaging the first pitch control component. The swashplate is movable along a swashplate plane transverse to the rotational axis. The shaft is rotatable about the rotational axis relative to the swashplate. Movement of the swashplate along the swashplate plane relative to the rotational axis causes the hub to periodically hinge about the hinge axis as the hub rotates about the rotational axis.

Abstract: Disclosed herein are systems and methods for managing consumer demand in an online marketplace. In one aspect, a method for managing consumer initiated demand in an online marketplace comprises: receiving a first request for a product or service from a first consumer; identifying one of a plurality of categories as corresponding to the first request; assigning the first request to the identified category; receiving at least one additional request for a product or service from a second consumer and assigning the at least one additional request to the identified category; determining, using a processor, a demand for the identified category based at least on the number of requests assigned to the identified category; and selectively generating a merchant notification for at least one merchant based on the determined demand for the identified category.