Bitrate optimization for multi-representation encoding using playback statistics
US10454987B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2016 |
| Grant date | Oct 22, 2019 |
| Priority date | — |
| Expiry date | Mar 2, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L65/80
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Implementations disclose bitrate optimization for multi-representation encoding using playback statistics. A method includes generating multiple versions of a segment of a source video, the versions comprising encodings of the segment at different encoding bitrates for each resolution of the segment, measuring a quality metric for each version of the segment, generating rate-quality models for each resolution of the segment based on the measured quality metrics corresponding to the resolutions, generating a probability model to predict requesting probabilities that representations of the segment are requested, the probability model based on a joint probability distribution of network speed and viewport size that is generated from client-side feedback statistics associated with prior playbacks of other videos, determining an encoding bitrate for each of the representations of the segment based on the rate-quality models and the probability model, and assigning determined encoding bitrates to corresponding representations of the segment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.