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    • 9. 发明授权
    • Method and system for generating an instantaneous decoding refresh (IDR) picture slice in an H.264/AVC compliant video data stream
    • 用于在符合H.264 / AVC的视频数据流中生成瞬时解码刷新(IDR)图像片的方法和系统
    • US09392279B2
    • 2016-07-12
    • US14029823
    • 2013-09-18
    • Advanced Digital Broadcast S.A.
    • Tomasz Dziecielewski
    • H04N7/36H04N19/51H04N21/4402H04N19/70H04N19/513H04N19/48H04N19/40
    • H04N19/513H04N19/40H04N19/48H04N19/70H04N21/4402
    • Method for generating an IDR picture slice in an H.264/AVC stream, the method including finding an I-type picture and identifying it as a start picture, modifying and/or adding, in each slice header of the start picture, IDR-specific elements, removing, from each slice header of the start picture, non-IDR-specific elements, removing all reference and non-reference B-slices between the start picture and the next I-picture or P-picture, following the start picture, that is a frame or the first field, in decoding order, of a complementary field pair. Starting from the first picture after the removed slices, for each slice header executing: correcting frame_num so that they are valid with reference to the previous picture, correcting references, in the MMCO, as a function of the removed reference B-pictures, correcting references, found in the “Reference picture list reordering” structure, as a function of the removed reference B-pictures and restoring slice encapsulation for modified slices.
    • 一种用于在H.264 / AVC流中生成IDR图像切片的方法,所述方法包括找到I型图像并将其识别为开始图像,在开始图像的每个切片报头中修改和/或添加IDR- 从起始图像的每个切片头部移除非IDR特定元素,在起始图像之后移除开始图像和下一个I图像或P图像之间的所有参考和非参考B切片 ,即以解码顺序的互补字段对的帧或第一字段。 从删除的片之后的第一个图像开始,对于每个片头执行:校正frame_num,使得它们参考前一图像是有效的,在MMCO中校正参考,作为去除的参考B图像的函数,校正引用 ,在“参考图片列表重新排序”结构中找到,作为删除的参考B图片和恢复切片封装的功能。