Controlling video encoding using audio information
US8780978B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 2009 |
| Grant date | Jul 15, 2014 |
| Priority date | — |
| Expiry date | Oct 30, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/2402
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video encoder may reduce bandwidth consumption by skipping encoding of or reducing an encoding rate of video frames corresponding to silent audio frames, that is, audio frames that do not include speech data. In one example, an apparatus includes a video encoder comprising a coding unit configured to encode video data in a first or second mode and a mode select unit configured to receive an indication of whether encoded audio data corresponding to the video data to be encoded includes speech data. When the audio data includes speech data, the mode select unit selects the first mode, and when the audio data does not include speech data, the mode select unit selects the second mode. The second mode consumes relatively less bandwidth, e.g., by reducing a bitrate, modifying a quantization parameter to increase quantization, and/or reducing a frame rate relative to the first mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.