Converting variable frame rate video to fixed frame rate video
US10798335B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 14, 2018 |
| Grant date | Oct 6, 2020 |
| Priority date | — |
| Expiry date | Aug 18, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/51
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Converting variable frame rate video to fixed frame rate video is described. A variable frame rate (VFR) video having source frames with varying frame durations is obtained. A fixed frame rate for the VFR video is determined. A mapping is generated which maps the source frames of the VFR video to a sequence of result frames of the fixed frame rate. To generate the mapping, a suitable source frame is chosen for each result frame using one or more mapping rules. After the mapping is generated, the mapping is adjusted to improve smoothness of motion of the VFR video by adding at least one skipped source frame to the mapping and removing at least one repeated source frame from the mapping. The VFR video is then converted into, or interpreted as, a fixed frame rate video having the determined fixed frame rate based on the adjusted mapping.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.