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    • 5. 发明申请
    • Method and Apparatus for Retrieving I Frame
    • 检索I帧的方法和装置
    • US20120174168A1
    • 2012-07-05
    • US13395243
    • 2010-04-23
    • Xian Liang
    • Xian Liang
    • H04N21/643H04N21/633
    • H04N21/2389H04N19/48H04N19/61H04N21/23418H04N21/2387H04N21/4385H04N21/44008H04N21/8451H04N21/8453H04N21/8455
    • A method and apparatus for retrieving an I frame are disclosed in the present invention, wherein, the method includes: analyzing transport stream packets in a transport stream one by one, and if it is determined that the current transport stream packet is a video packet and includes a Packet Elementary Stream (PES) header, then making a determination according to data after the PES header in the current transport stream packet to locate initial and/or end locations of the I frame. In the present invention, without parsing syntax elements in H.264, such as a Sequence Parameter Set (SPS), a Picture Parameter Set (PPS), a slice etc., the location of the I frame can be positioned by simply comparing various Transport stream (TS) packets in the TS stream and making a determination.
    • 本发明公开了一种用于检索I帧的方法和装置,其中,该方法包括:逐个分析传输流中的传输流分组,以及如果确定当前传输流分组是视频分组, 包括分组基本流(PES)报头,然后根据当前传输流分组中的PES报头之后的数据进行确定,以定位I帧的初始和/或结束位置。 在本发明中,在不解析诸如序列参数集(SPS),图像参数集(PPS),片段等的H.264中的语法元素的情况下,可以通过简单地比较各种 传输流(TS)数据包在TS流中并进行确定。