Abstract: In some embodiments, a method receives a current encoding stream of a video. A first measurement for a reference encoding stream is selected to measure a quality of the reference encoding stream. The method compares a second measurement of the current encoding stream to the first measurement of the reference encoding stream and outputs whether the current encoding stream is validated based on the comparing.

Abstract: In some embodiments, a method receives a current encoding stream of a video. A first measurement for a reference encoding stream is selected to measure a quality of the reference encoding stream. The method compares a second measurement of the current encoding stream to the first measurement of the reference encoding stream and outputs whether the current encoding stream is validated based on the comparing.

Abstract: In some embodiments, a method analyzes content of a video to generate a representation for a video that represents a relationship of a bitrate to a quality measurement for the video. A plurality of candidate points on the representation are selected. Then, the method selects a profile ladder from at least a portion of the plurality of candidate points. Each profile in the profile ladder is associated with a candidate point and the profile includes a corresponding bitrate and a quality measurement for the respective candidate point. The profile ladder is used for the video.

Abstract: The present invention discloses an omnidirectional image processing method and device. Format information is extracted from a code stream, positions in a decoded omnidirectional image is mapped to positions on a sphere by using a special mapping relationship according to the format information, and the decoded omnidirectional image at least includes one region which meets the special mapping relationship. The present invention can enable the regions in the decoded omnidirectional image to be distributed more uniformly than the sphere, thereby improving representation efficiency, and reducing conversion distortion. While designing the omnidirectional image processing method, the present invention also designs the corresponding device.

Abstract: In some embodiments, a method generates a representation for a video that represents a relationship of a bitrate to a quality measurement for the video and selects candidate transcoding points on the representation. A plurality of candidate profile ladders are generated based on the candidate transcoding points. Each of the plurality of candidate profile ladders includes a different combination of profiles and a profile is associated with at least one of a bitrate and a quality measurement. The method selects a profile ladder from the plurality of candidate profile ladders based on analyzing the bitrate or the quality of the profile ladder and uses the profile ladder for the video.

Abstract: The present invention discloses an omnidirectional image processing method and device. Format information is extracted from a code stream, positions in a decoded omnidirectional image is mapped to positions on a sphere by using a special mapping relationship according to the format information, and the decoded omnidirectional image at least includes one region which meets the special mapping relationship. The present invention can enable the regions in the decoded omnidirectional image to be distributed more uniformly than the sphere, thereby improving representation efficiency, and reducing conversion distortion. While designing the omnidirectional image processing method, the present invention also designs the corresponding device.