Bi-directional video compression for real-time video streams during transport in a packet switched network
    1.
    发明授权
    Bi-directional video compression for real-time video streams during transport in a packet switched network 有权
    在分组交换网络传输期间实时视频流的双向视频压缩

    公开(公告)号:US09253063B2

    公开(公告)日:2016-02-02

    申请号:US14334459

    申请日:2014-07-17

    摘要: A method, a system and a computer device for initiating bi-directional compression of a video stream in a packet switched network, based on delay tolerance of a service or application. A video frame recompression (VFR) utility determines an end-to-end (E2E) delay tolerance retrieved from a Real-time Transport Control Protocol (RTCP) report. The VFR utility then determines the actual expected delay based on a deep inspection of packet headers. The VFR utility utilizes a processing opportunity delay (which determines whether the E2E delay tolerance is greater than the actual expected delay) to reprocess video content comprising Intra-coded (I) pictures/frames and Predicted (P) frames to improve compression efficiency. The VFR utility may also utilize a complexity ratio which is a ratio of the I-Frame rate and the P-Frame rate to select frames for compression. The VFR utility recompresses video content by replacing P-Frames with B-Frames.

    摘要翻译: 一种用于基于服务或应用的延迟容限来启动分组交换网络中的视频流的双向压缩的方法,系统和计算机设备。 视频帧重新压缩(VFR)实用程序确定从实时传输控制协议(RTCP)报告检索的端到端(E2E)延迟容限。 然后,VFR实用程序基于对分组报头的深度检查来确定实际的预期延迟。 VFR实用程序利用处理机会延迟(其确定E2E延迟容差是否大于实际预期延迟),以重新处理包括帧内编码(I)图像/帧和预测(P)帧的视频内容,以提高压缩效率。 VFR实用程序还可以利用复杂度比率,其是I帧速率和P帧速率与选择用于压缩的帧的比率。 VFR实用程序通过用B帧替换P帧来重新压缩视频内容。