Method and system for preparing video communication images for wide screen display
First Claim
Patent Images
1. A method of composing a video layout, comprising:
- receiving at an MCU a plurality of video streams from a plurality of endpoints;
scaling of the video streams;
selecting from the scaled video streams a plurality of scaled video segments, at least one of the scaled video segments having an aspect ratio of about 4;
3; and
composing an integer number of the selected scaled video segments in a video layout having an aspect ratio of about 16;
9, preserving the aspect ratio of the selected scaled video segments;
converting the video layout from 16;
9 to 4;
3 prior to transmitting the video layout to an endpoint of the plurality of endpoints, the endpoint comprising a 16;
9 display and a codec that is not capable of processing a 16;
9 video image; and
transmitting the video layout to the endpoint.
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Abstract
A system and method is disclosed for composing a video layout having an aspect ratio of 16:9 from a plurality of video segments having an aspect ratio other than 16:9. For example, the plurality of video segments might have an aspect ratio of 4:3. To create a composite frame having an aspect ratio of about 16:9, the disclosed system scales each one of the segments and places each scaled segment in the layout in such a way that the composite layout has an aspect ratio of about 16:9.
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Citations
22 Claims
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1. A method of composing a video layout, comprising:
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receiving at an MCU a plurality of video streams from a plurality of endpoints; scaling of the video streams; selecting from the scaled video streams a plurality of scaled video segments, at least one of the scaled video segments having an aspect ratio of about 4;
3; andcomposing an integer number of the selected scaled video segments in a video layout having an aspect ratio of about 16;
9, preserving the aspect ratio of the selected scaled video segments;converting the video layout from 16;
9 to 4;
3 prior to transmitting the video layout to an endpoint of the plurality of endpoints, the endpoint comprising a 16;
9 display and a codec that is not capable of processing a 16;
9 video image; andtransmitting the video layout to the endpoint. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of composing a video layout, comprising:
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receiving at an MCU a plurality of video streams from a plurality of endpoints; scaling of the video streams; selecting from the scaled video streams a plurality of scaled video segments, at least one of the scaled video segments having an aspect ratio of about 4;
3; andcomposing an integer number of the selected scaled video segments in a video layout having an aspect ratio of about 16;
9;transmitting the video layout to an endpoint comprising a 16;
9 display and a codec that is not capable of processing a 16;
9 video image; andconverting the video layout from 16;
9 to 4;
3, comprising;adding a rectangular segment of height to the layout, wherein the rectangular segment of height is filled with a background color, prior to transmitting the video layout to the endpoint. - View Dependent Claims (11)
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12. A method of composing a video layout, comprising:
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receiving at an MCU a plurality of video streams from a plurality of endpoints; scaling of the video streams; selecting from the scaled video streams a plurality of scaled video segments, each of the scaled video segments having an aspect ratio of about 4;
3; andcomposing an integer number of the selected scaled video segments in a video layout having an aspect ratio of about 16;
9, comprising one or more large scaled video segments and a plurality of small scaled video segments, wherein the area of each of the large scaled video segments is approximately an integral multiplier of the area of each of the small scaled video segments. - View Dependent Claims (13, 14)
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15. A video communication control unit, comprising:
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a scaler configured to scale a plurality of video streams from a plurality of endpoints; logic to select from the scaled video streams a plurality of scaled video segments, at least one of the scaled video segments having an aspect ratio of about 4;
3; anda video builder configured to compose an integer number of the selected scaled video segments in a video layout having an aspect ratio of about 16;
9, preserving the aspect ratio of the selected scaled video segments; andconvert the video layout from 16;
9 to 4;
3 prior to transmitting the video layout to an endpoint of the plurality of endpoints, the endpoint comprising a 16;
9 display and a codec that is not capable of processing a 16;
9 video image. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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Specification