Quasi-constant-quality rate control with look-ahead
    3.
    发明授权
    Quasi-constant-quality rate control with look-ahead 失效
    准恒定质量率控制与先行

    公开(公告)号:US08565301B2

    公开(公告)日:2013-10-22

    申请号:US11373404

    申请日:2006-03-10

    IPC分类号: H04N7/12

    摘要: Methods and apparatus efficiently encode multimedia data, such as live video streams. An encoding complexity of a predetermined time interval, such as 1 second, is estimated before the actual encoding that will be used. This permits the actual encoding to be performed with an a priori estimate of complexity, permitting the bits allocated for the predetermined time interval (bit rate) to be efficiently allocated within the predetermined time interval. Moreover, the estimated complexity can be provided to a device, such as a multiplexer, which can then allocate the available bandwidth for a collection of multiplexed video channels according to the encoding complexity anticipated for those video channels, which then permits the quality of a particular channel to remain relatively constant even when the bandwidth for the collection of multiplexed video channels is relatively constant.

    摘要翻译: 方法和设备有效地对多媒体数据进行编码,例如直播视频流。 在将要使用的实际编码之前估计预定时间间隔(例如1秒)的编码复杂度。 这允许以先前的复杂度估计来执行实际编码,允许在预定时间间隔内有效地分配在预定时间间隔(比特率)中分配的比特。 此外,可以将估计的复杂度提供给诸如多路复用器的设备,然后可以根据对于那些视频通道预期的编码复杂度来为多路复用的视频信道的集合分配可用带宽,然后允许特定的 即使当用于收集多路复用视频信道的带宽相对恒定时,信道保持相对恒定。

    VIDEO PROCESSING WITH SCALABILITY
    6.
    发明申请
    VIDEO PROCESSING WITH SCALABILITY 审中-公开
    视频处理与可扩展性

    公开(公告)号:US20070230564A1

    公开(公告)日:2007-10-04

    申请号:US11562360

    申请日:2006-11-21

    IPC分类号: H04N11/02

    摘要: In general, this disclosure describes video processing techniques that make use of syntax elements and semantics to support low complexity extensions for multimedia processing with video scalability. The syntax elements and semantics may be added to network abstraction layer (NAL) units and may be especially applicable to multimedia broadcasting, and define a bitstream format and encoding process that support low complexity video scalability. In some aspects, the techniques may be applied to implement low complexity video scalability extensions for devices that otherwise conform to the H.264 standard. For example, the syntax element and semantics may be applicable to NAL units conforming to the H.264 standard.

    摘要翻译: 一般来说,本公开描述了利用语法元素和语义来支持具有视频可扩展性的多媒体处理的低复杂度扩展的视频处理技术。 语法元素和语义可以被添加到网络抽象层(NAL)单元,并且可以特别适用于多媒体广播,并且定义支持低复杂度视频可扩展性的比特流格式和编码过程。 在一些方面,可以将这些技术应用于为符合H.264标准的设备实现低复杂度视频可扩展性扩展。 例如,语法元素和语义可以适用于符合H.264标准的NAL单元。