Patent ID: 8320466
Filing Date: 2012-11-27
Classification: H04N

Abstract:
1. A mixed video delivering apparatus, comprising: a video receiving unit configured to receive first to Nth (N being an integer more than 1) encoded video data, from first to Nth terminals; a decoding unit configured to decode the first to Nth encoded video data to obtain first to Nth decoded video data; a video mixing unit configured to mix the first to Nth decoded video data to obtain mixed video data representing a mixed video to be transmitted to a terminal “A” which is one of the first to Nth terminals; a layout information storage configured to store layout information showing a layout of each video in the mixed video; a layout change instruction receiver configured to receive from the terminal “A” a layout change instruction requesting a change to the layout information; a layout information updating unit configured to update the layout information in accordance with the layout change instruction wherein the video mixing unit mixes the first to Nth decoded video data based on the layout information; a frame rate measuring unit to configured to measure frame rates of the first to Nth videos; a measured frame rate storage configured to store the frame rates of the first to Nth videos measured by the frame rate measuring unit; an encoding parameter selecting unit configured to identify a dominant video which is dominant in the mixed video based on the layout information and select the frame rate of the dominant video in the measured frame rate storage; an encoding unit configured to encode the mixed video data so that the mixed video is transmitted at the frame rate of the dominant video to the terminal A to obtain encoded mixed video data; and a video transmitting unit configured to transmit the encoded mixed video data to the terminal A.